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The LiteBIRD satellite mission - Sub-kelvin instrument

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arXiv 2018年

作者： Suzuki, A. Ade, P.A.R. Akiba, Y. Alonso, D. Arnold, K. Aumont, J. Baccigalupi, C. Barron, D. Basak, S. Beckman, S. Borrill, J. Boulanger, F. Bucher, M. Calabrese, E. Chinone, Y. Cho, H.-M. Cukierman, A. Curtis, D.W. de Haan, T. Dobbs, M. Dominjon, A. Dotani, T. Duband, L. Ducout, A. Dunkley, J. Duval, J.M. Elleflot, T. Eriksen, H.K. Errard, J. Fischer, J. Fujino, T. Funaki, T. Fuskeland, U. Ganga, K. Goeckner-Wald, N. Grain, J. Halverson, N.W. Hamada, T. Hasebe, T. Hasegawa, M. Hattori, K. Hattori, M. Hayes, L. Hazumi, M. Hidehira, N. Hill, C.A. Hilton, G. Hubmayr, J. Ichiki, K. Iida, T. Imada, H. Inoue, M. Inoue, Y. Irwin, K.D. Ishino, H. Jeong, O. Kanai, H. Kaneko, D. Kashima, S. Katayama, N. Kawasaki, T. Kernasovskiy, S.A. Keskitalo, R. Kibayashi, A. Kida, Y. Kimura, K. Kisner, T. Kohri, K. Komatsu, E. Komatsu, K. Kuo, C.L. Kurinsky, N.A. Kusaka, A. Lazarian, A. Lee, A.T. Li, D. Linder, E. Maffei, B. Mangilli, A. Maki, M. Matsumura, T. Matsuura, S. Meilhan, D. Mima, S. Minami, Y. Mitsuda, K. Montier, L. Nagai, M. Nagasaki, T. Nagata, R. Nakajima, M. Nakamura, S. Namikawa, T. Naruse, M. Nishino, H. Nitta, T. Noguchi, T. Ogawa, H. Oguri, S. Okada, N. Okamoto, A. Okamura, T. Otani, C. Patanchon, G. Pisano, G. Rebeiz, G. Remazeilles, M. Richards, P.L. Sakai, S. Sakurai, Y. Sato, Y. Sato, N. Sawada, M. Segawa, Y. Sekimoto, Y. Seljak, U. Sherwin, B.D. Shimizu, T. Shinozaki, K. Stompor, R. Sugai, H. Sugita, H. Suzuki, J. Tajima, O. Takada, S. Takaku, R. Takakura, S. Takatori, S. Tanabe, D. Taylor, E. Thompson, K.L. Thorne, B. Tomaru, T. Tomida, T. Tomita, N. Tristram, M. Tucker, C. Turin, P. Tsujimoto, M. Uozumi, S. Utsunomiya, S. Uzawa, Y. Vansyngel, F. Wehus, I.K. Westbrook, B. Willer, M. Whitehorn, N. Yamada, Y. Yamamoto, R. Yamasaki, N. Yamashita, T. Yoshida, M. Aoyama Gakuin University Sagamihara Kanagawa252-5258 Japan Astronomical Institute Graduate School of Science Tohoku University Sendai980-8578 Japan Univ Paris Diderot CNRS IN2P3 CEA Irfu Obs de Paris Sorbonne Paris Cité France Center for Astrophysics and Space Astronomy University of Colorado BoulderCO80309 United States CNRS IRAP Toulouse Cedex 4F-31028 France Computational Cosmology Center Lawrence Berkeley National Laboratory BerkeleyCA94720 United States DAMTP University of Cambridge CambridgeCB3 0WA United Kingdom Department of Astronomy University of Tokyo Tokyo113-0033 Japan Department of Astrophysical and Planetary Sciences University of Colorado BoulderCO80309 United States Department of Astrophysical Sciences Princeton University PrincetonNJ08544 United States Indian Institute of Science Education and Research Vithura Thiruvananthapuram695551 India Department of Physics Okayama University Okayama Okayama700-8530 Japan Department of Physics Stanford University StanfordCA94305-4060 United States Department of Physics University of Tokyo Tokyo113-0033 Japan Department of Physics University of California BerkeleyCA94720 United States Department of Physics University of California San DiegoCA92093-0424 United States Department of Physics University of Colorado BoulderCO80309 United States Grenoble France Tsukuba Ibaraki305-0801 Japan CNRS UMR 8617 Université Paris-Sud 11 Bâtiment 121 Orsay91405 France Institute of Physics Academia Sinica 128 Sec.2 Academia Road Nankang Taiwan Sagamihara Kanagawa252-0222 Japan Tsukuba Ibaraki305-8505 Japan Institute of Theoretical Astrophysics University of Oslo OsloNO-0315 Norway Via Bonomea 265 Trieste34136 Italy Kansei Gakuin University Nishinomiya Hyogo662-8501 Japan Kavli Institute for Cosmology Cambridge CambridgeCB3 OHA United Kingdom SLAC National Accelerator Laboratory Menlo ParkCA94025 United States UTIAS University of Tokyo Ka

Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth, provides convincing explanation for cosmological observations. Recent advancements in detector technology have opened opportunities to explore primordial gravitational waves generated by the inflation through "B-mode" (divergent-free) polarization pattern embedded in the Cosmic Microwave Background anisotropies. If detected, these signals would provide strong evidence for inflation, point to the correct model for inflation, and open a window to physics at ultra-high energies. LiteBIRD is a satellite mission with a goal of detecting degree-and-larger-angular-scale B-mode polarization. LiteBIRD will observe at the second Lagrange point with a 400 mm diameter telescope and 2,622 detectors. It will survey the entire sky with 15 frequency bands from 40 to 400 GHz to measure and subtract foregrounds. The U.S. LiteBIRD team is proposing to deliver sub-Kelvin instruments that include detectors and readout electronics. A lenslet-coupled sinuous antenna array will cover low-frequency bands (40 GHz to 235 GHz) with four frequency arrangements of trichroic pixels. An orthomode-transducer-coupled corrugated horn array will cover high-frequency bands (280 GHz to 402 GHz) with three types of single frequency detectors. The detectors will be made with Transition Edge Sensor (TES) bolometers cooled to a 100 milli-Kelvin base temperature by an adiabatic demagnetization refrigerator. The TES bolometers will be read out using digital frequency multiplexing with Superconducting QUantum Interference Device (SQUID) amplifiers. Up to 78 bolometers will be multiplexed with a single SQUID amplier. We report on the sub-Kelvin instrument design and ongoing developments for the LiteBIRD mission. Copyright © 2018, The Authors. All rights reserved.

关键词： Polarization

Magnetoelectric memory function with optical readout

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arXiv 2017年

作者： Kocsis, V. Penc, K. Rõõm, T. Nagel, U. Vít, J. Romhányi, J. Tokunaga, Y. Taguchi, Y. Tokura, Y. Kézsmárki, I. Bordács, S. Wako Saitama351-0198 Japan Department of Physics Budapest University of Technology and Economics and MTA-BME Lendület Magneto-optical Spectroscopy Research Group Budapest1111 Hungary Institute for Solid State Physics and Optics Wigner Research Centre for Physics Hungarian Academy of Sciences P.O.B. 49 BudapestH-1525 Hungary National Institute of Chemical Physics and Biophysics Tallinn12618 Estonia Institute of Physics ASCR Na Slovance 2 Prague 8182 21 Eue Faculty of Nuclear Science and Physical Engineering Czech Technical University Břehová 7 Prague 1115 19 Eue Okinawa Institute of Science and Technology Graduate University Onna-sonOkinawa904-0395 Japan Department of Advanced Materials Science University of Tokyo Kashiwa277-8561 Japan Quantum-Phase Electronics Center Department of Applied Physics University of Tokyo Tokyo113-8656 Japan Department of Applied Physics University of Tokyo Hongo Tokyo113-8656 Japan Experimental Physics 5 Center for Electronic Correlations and Magnetism Institute of Physics University of Augsburg Augsburg86159 Germany Hungarian Academy of Sciences Premium Postdoctor Program Budapest1051 Hungary

The ultimate goal of multiferroic research is the development of new-generation non-volatile memory devices1, the so-called magnetoelectric (ME) memories, where magnetic bits are controlled via electric fields without the application of electrical currents subject to dissipation. This low-power operation exploits the entanglement of the magnetization and the electric polarization coexisting in multiferroic materials2,3. Here we demonstrate the optical readout of ME memory states in the antiferromagnetic (AFM) and antiferroelectric (AFE) LiCoPO4, based on the strong absorption difference of THz radiation between its two types of ME domains. This unusual contrast is attributed to the dynamic ME effect of the spin-wave excitations, as confirmed by our microscopic model, which also captures the characteristics of the observed static ME effect. Our proof-of-principle study, demonstrating the control and the optical readout of ME domains in LiCoPO4, lays down the foundation for future ME memory devices based on antiferroelectric-antiferromagnetic insulators. Copyright © 2017, The Authors. All rights reserved.

关键词： Digital storage

Tunable Crystallinity and Charge Transfer in Two‐Dimensional G‐Quadruplex Organic Frameworks

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Angewandte Chemie 2018年第15期130卷

作者： Yi‐Lin Wu N. Scott Bobbitt Jenna L. Logsdon Natalia E. Powers‐Riggs Jordan N. Nelson Xiaolong Liu Timothy C. Wang Randall Q. Snurr Joseph T. Hupp Omar K. Farha Mark C. Hersam Michael R. Wasielewski Department of Chemistry Argonne-Northwestern Solar Energy Research (ANSER) Center and Institute for Sustainability and Energy at Northwestern Northwestern University Evanston IL USA Department of Chemical & Biological Engineering Northwestern University Evanston IL USA Applied Physics Graduate Program Northwestern University Evanston IL USA Department of Chemistry King Abdulaziz University Jeddah Saudi Arabia

DNA G‐quadruplex structures were recently discovered to provide reliable scaffolding for two‐dimensional organic frameworks due to the strong hydrogen‐bonding ability of guanine. Herein, 2,7‐diaryl pyrene building blocks with high HOMO energies and large optical gaps are incorporated into G‐quadruplex organic frameworks. The adjustable substitution on the aryl groups provides an opportunity to elucidate the framework formation mechanism; molecular non‐planarity is found to be beneficial for restricting interlayer slippage, and the framework crystallinity is highest when intermolecular interaction and non‐planarity strike a fine balance. When guanine‐functionalized pyrenes are co‐crystallized with naphthalene diimide, charge‐transfer (CT) complexes are obtained. The photophysical properties of the pyrene‐only and CT frameworks are characterized by UV/Vis and steady‐state and time‐resolved photoluminescence spectroscopies, and by EPR spectroscopy for the CT complex frameworks.

关键词： Charge-Transfer-Komplexe G-Quadruplexe Kristall-Engineering Organische Gerüststrukturen Selbstorganisation

Search for new phenomena with large jet multiplicities and missing transverse momentum using large-radius jets and flavour-tagging at ATLAS in 13 TeV p p collisions

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arXiv 2017年

作者： Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B.S. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, M. Adye, T. Affolder, A.A. Afik, Y. Agatonovic-Jovin, T. Agheorghiesei, C. Aguilar-Saavedra, J.A. Ahlen, S.P. Ahmadov, F. Aielli, G. Akatsuka, S. Akerstedt, H. Åkesson, T.P.A. Akilli, E. Akimov, A.V. Alberghi, G.L. Albert, J. Albicocco, P. Alconada Verzini, M.J. Alderweireldt, S.C. Aleksa, M. Aleksandrov, I.N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, M. Ali, B. Aliev, M. Alimonti, G. Alison, J. Alkire, S.P. Allbrooke, B.M.M. Allen, B.W. Allport, P.P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A.A. Alstaty, M.I. Alvarez Gonzalez, B. Álvarez Piqueras, D. Alviggi, M.G. Amadio, B.T. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S.P. Amoroso, S. Amundsen, G. Anastopoulos, C. Ancu, L.S. Andari, N. Andeen, T. Anders, C.F. Anders, J.K. Anderson, K.J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Angerami, A. Anisenkov, A.V. Anjos, N. Annovi, A. Antel, C. Antonelli, M. Antonov, A. Antrim, D.J. Anulli, F. Aoki, M. Aperio Bella, L. Arabidze, G. Arai, Y. Araque, J.P. Araujo Ferraz, V. Arce, A.T.H. Ardell, R.E. Arduh, F.A. Arguin, J.-F. Argyropoulos, S. Arik, M. Armbruster, A.J. Armitage, L.J. Arnaez, O. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Artz, S. Asai, S. Asbah, N. Ashkenazi, A. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N.B. Augsten, K. Avolio, G. Axen, B. Ayoub, M.K. Azuelos, G. Baas, A.E. Baca, M.J. Bachacou, H. Bachas, K. Backes, M. Bagnaia, P. Bahmani, M. Bahrasemani, H. Baines, J.T. Bajic, M. Baker, O.K. Baldin, E.M. Balek, P. Balli, F. Balunas, W.K. Banas, E. Bandyopadhyay, A. Banerjee, Sw. Bannoura, A.A.E. Barak, L. Barberio, E.L. Barberis, D. Barbero, M. Barillari, T. Barisits, M.-S. Barkeloo, J.T. Barklow, T. Barlow, N. Barnes, S.L. Barnett, B.M. Department of Physics University of Adelaide Adelaide Australia Physics Department SUNY Albany AlbanyNY United States Department of Physics University of Alberta EdmontonAB Canada LAPP CNRS/IN2P3 Université Savoie Mont Blanc Annecy-le-Vieux France High Energy Physics Division Argonne National Laboratory ArgonneIL United States Department of Physics University of Arizona TucsonAZ United States Department of Physics University of Texas at Arlington ArlingtonTX United States Physics Department National and Kapodistrian University of Athens Athens Greece Physics Department National Technical University of Athens Zografou Greece Department of Physics The University of Texas at Austin AustinTX United States Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Barcelona Institute of Science and Technology Barcelona Spain Institute of Physics University of Belgrade Belgrade Serbia Department for Physics and Technology University of Bergen Bergen Norway Physics Division Lawrence Berkeley National Laboratory University of California BerkeleyCA United States Department of Physics Humboldt University Berlin Germany Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Centro de Investigaciones Universidad Antonio Narino Bogota Colombia Physikalisches Institut University of Bonn Bonn Germany Department of Physics Boston University BostonMA United States Department of Physics Brandeis University WalthamMA United States Physics Department Brookhaven National Laboratory UptonNY United States Departamento de Física Universidad de Buenos Aires Buenos Aires Argentina Cavendish Laboratory University of Cambridge Cambridge United Kingdom Department of Physics Carleton University OttawaON Canada CERN Geneva Switzerland Enrico Fermi Institute University of Chicago ChicagoIL Un

A search is presented for particles that decay producing a large jet multiplicity and invisible particles. The event selection applies a veto on the presence of isolated electrons or muons and additional requirements on the number of b-tagged jets and the scalar sum of masses of large-radius jets. Having explored the full ATLAS 2015–2016 dataset of LHC proton–proton collisions at √s = 13 TeV, which corresponds to 36.1 fb−1 of integrated luminosity, no evidence is found for physics beyond the Standard Model. The results are interpreted in the context of simplified models inspired by R-parity-conserving and R-parity-violating supersymmetry, where gluinos are pair-produced. More generic models within the phenomenological minimal supersymmetric Standard Model are also considered. Copyright © 2017, The Authors. All rights reserved.

关键词： Supersymmetry

Search for new phenomena in dijet events using 37 fb−1 of pp collision data collected at √s = 13 TeV with the ATLAS detector

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arXiv 2017年

作者： Aaboud, M. Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Abeloos, B. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B.S. Adachi, S. Adelman, J. Adersberger, M. Adye, T. Affolder, A.A. Agatonovic-Jovin, T. Aguilar-Saavedra, J.A. Ahlen, S.P. Ahmadov, F. Akatsuka, S. Åkesson, T.P.A. Akimov, A.V. Albert, J. Verzini, M.J. Alconada Aleksa, M. Aleksandrov, I.N. Alexander, G. Alexopoulos, T. Alhroob, M. Ali, B. Alison, J. Alkire, S.P. Allbrooke, B.M.M. Allen, B.W. Allport, P.P. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A.A. Alstaty, M. Gonzalez, B. Alvarez Piqueras, D. Álvarez Amadio, B.T. Amelung, C. Amidei, D. Amoroso, S. Amundsen, G. Anastopoulos, C. Ancu, L.S. Andari, N. Andeen, T. Anders, J.K. Anderson, K.J. Angelidakis, S. Angelozzi, I. Angerami, A. Anghinolfi, F. Anisenkov, A.V. Anjos, N. Antonelli, M. Antonov, A. Antrim, D.J. Aoki, M. Bella, L. Aperio Arabidze, G. Arai, Y. Arce, A.T.H. Ardell, R.E. Arduh, F.A. Arguin, J.-F. Argyropoulos, S. Armbruster, A.J. Armitage, L.J. Arnaez, O. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Artz, S. Asai, S. Asbah, N. Ashkenazi, A. Asquith, L. Assamagan, K. Atkinson, M. Atlay, N.B. Augsten, K. Avolio, G. Axen, B. Ayoub, M.K. Azuelos, G. Baca, M.J. Bachacou, H. Backes, M. Backhaus, M. Bahrasemani, H. Baines, J.T. Bajic, M. Baker, O.K. Baldin, E.M. Balek, P. Balestri, T. Balli, F. Balunas, W.K. Banas, E. Banerjee, Sw. Bannoura, A.A.E. Barak, L. Barberio, E.L. Barbero, M. Barillari, T. Barisits, M.-S. Barklow, T. Barlow, N. Barnett, B.M. Barnett, R.M. Barone, G. Barr, A.J. Navarro, L. Barranco Barreiro, F. Bartoldus, R. Barton, A.E. Basalaev, A. Bassalat, A. Bates, R.L. Batista, S.J. Batley, J.R. Battaglia, M. Bauer, F. Bawa, H.S. Beacham, J.B. Beattie, M.D. Beau, T. Beauchemin, P.H. Bechtle, P. Beck, H.P. Becker, K. Becker, M. Beckingham, M. Becot, C. Bednyakov, V.A. Bedognetti, M. Bee, C.P. Beermann, T.A. Begel, M. Behr, J.K. Department of Physics University of Adelaide Adelaide Australia Physics Department SUNY Albany AlbanyNY United States Department of Physics University of Alberta EdmontonAB Canada LAPP CNRS/IN2P3 Université Savoie Mont Blanc Annecy-le-Vieux France High Energy Physics Division Argonne National Laboratory ArgonneIL United States Department of Physics University of Arizona TucsonAZ United States Department of Physics University of Texas at Arlington ArlingtonTX United States Physics Department National and Kapodistrian University of Athens Athens Greece Physics Department National Technical University of Athens Zografou Greece Department of Physics The University of Texas at Austin AustinTX United States Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Barcelona Institute of Science and Technology Barcelona Spain Institute of Physics University of Belgrade Belgrade Serbia Department for Physics and Technology University of Bergen Bergen Norway Physics Division Lawrence Berkeley National Laboratory University of California BerkeleyCA United States Department of Physics Humboldt University Berlin Germany Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Centro de Investigaciones Universidad Antonio Narino Bogota Colombia Physikalisches Institut University of Bonn Bonn Germany Department of Physics Boston University BostonMA United States Department of Physics Brandeis University WalthamMA United States Physics Department Brookhaven National Laboratory UptonNY United States Departamento de Física Universidad de Buenos Aires Buenos Aires Argentina Cavendish Laboratory University of Cambridge Cambridge United Kingdom Department of Physics Carleton University OttawaON Canada CERN Geneva Switzerland Enrico Fermi Institute University of Chicago ChicagoIL Un

Dijet events are studied in the proton–proton collision dataset recorded at √s = 13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb−1 and 33.5 fb−1 respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. For resonance searches, a new method for fitting the background component of the invariant mass distribution is employed. The dataset is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses below 6.0 TeV are excluded, and limits are set on quantum black holes, heavy W0 bosons, W∗ bosons, and a range of masses and couplings in a Z0 dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distributions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a substantial improvement over those obtained previously with lower integrated luminosity. Copyright © 2017, The Authors. All rights reserved.

关键词： Angular distribution

Production of π0 and η mesons in Cu+Au collisions at √sNN=200 GeV

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arXiv 2018年

作者： Aidala, C. Ajitanand, N.N. Akiba, Y. Akimoto, R. Alexander, J. Alfred, M. Aoki, K. Apadula, N. Asano, H. Atomssa, E.T. Awes, T.C. Azmoun, B. Babintsev, V. Bagoly, A. Bai, M. Bai, X. Bannier, B. Barish, K.N. Bathe, S. Baublis, V. Baumann, C. Baumgart, S. Bazilevsky, A. Beaumier, M. Belmont, R. Berdnikov, A. Berdnikov, Y. Black, D. Blau, D.S. Boer, M. Bok, J.S. Boyle, K. Brooks, M.L. Bryslawskyj, J. Buesching, H. Bumazhnov, V. Butsyk, S. Campbell, S. Canoa Roman, V. Chen, C.-H. Chi, C.Y. Chiu, M. Choi, I.J. Choi, J.B. Choi, S. Christiansen, P. Chujo, T. Cianciolo, V. Cole, B.A. Connors, M. Cronin, N. Crossette, N. Csanád, M. Csörgo, T. Danley, T.W. Datta, A. Daugherity, M.S. David, G. DeBlasio, K. Dehmelt, K. Denisov, A. Deshpande, A. Desmond, E.J. Ding, L. Do, J.H. D’Orazio, L. Drapier, O. Drees, A. Drees, K.A. Durham, J.M. Durum, A. Engelmore, T. Enokizono, A. Esumi, S. Eyser, K.O. Fadem, B. Fan, W. Feege, N. Fields, D.E. Finger, M. Finger, M. Fleuret, F. Fokin, S.L. Frantz, J.E. Franz, A. Frawley, A.D. Fukao, Y. Fusayasu, T. Gainey, K. Gal, C. Gallus, P. Garg, P. Garishvili, A. Garishvili, I. Ge, H. Giordano, F. Glenn, A. Gong, X. Gonin, M. Goto, Y. Granier de Cassagnac, R. Grau, N. Greene, S.V. Grosse Perdekamp, M. Gu, Y. Gunji, T. Guragain, H. Hachiya, T. Haggerty, J.S. Hahn, K.I. Hamagaki, H. Hanks, J. Hasegawa, S. Haseler, T.O.S. Hashimoto, K. Hayano, R. He, X. Hemmick, T.K. Hester, T. Hill, J.C. Hill, K. Hodges, A. Hollis, R.S. Homma, K. Hong, B. Hoshino, T. Hotvedt, N. Huang, J. Huang, S. Ichihara, T. Ikeda, Y. Imai, K. Imazu, Y. Inaba, M. Iordanova, A. Isenhower, D. Isinhue, A. Ivanishchev, D. Jacak, B.V. Jeon, S.J. Jezghani, M. Ji, Z. Jia, J. Jiang, X. Johnson, B.M. Joo, K.S. Jouan, D. Jumper, D.S. Kamin, J. Kanda, S. Kang, B.H. Kang, J.H. Kang, J.S. Kapustinsky, J. Kawall, D. Kazantsev, A.V. Key, J.A. Khachatryan, V. Khandai, P.K. Khanzadeev, A. Abilene Christian University AbileneTX79699 United States Department of Physics Augustana University Sioux FallsSD57197 United States Department of Physics Banaras Hindu University Varanasi221005 India Bhabha Atomic Research Centre Bombay400 085 India Baruch College City University of New York New YorkNY10010 United States Collider-Accelerator Department Brookhaven National Laboratory UptonNY11973-5000 United States Physics Department Brookhaven National Laboratory UptonNY11973-5000 United States University of California-Riverside RiversideCA92521 United States Charles University Ovocný trh 5 Praha 1 Prague116 36 Czech Republic Chonbuk National University JeonjuKOR561-756 Korea Republic of Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing102413 China Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo113-0033 Japan University of Colorado BoulderCO80309 United States Columbia University New YorkNY10027 United States Nevis Laboratories IrvingtonNY10533 United States Czech Technical University Zikova 4 Prague 6166 36 Czech Republic Debrecen University H-4010 Debrecen Egyetem tér 1 Hungary ELTE Eötvös Loránd University Budapest Pázmány P. s. 1/AH-1117 Hungary Eszterházy Károly University Károly Róbert Campus Mátrai út 36 GyöngyösH-3200 Hungary Ewha Womans University SeoulKOR120-750 Korea Republic of Florida State University TallahasseeFL32306 United States Georgia State University AtlantaGA30303 United States Hanyang University Seoul KOR133-792 Korea Republic of Hiroshima University Kagamiyama Higashi-Hiroshima739-8526 Japan Department of Physics and Astronomy Howard University WashingtonDC20059 United States IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino142281 Russia University of Illinois at Urbana-Champaign UrbanaIL61801 United States Institute for Nuclear R

Production of π0 and η mesons has been measured at midrapidity in Cu+Au collisions at √sNN=200 GeV. Measurements were performed in π0(η) → γγ decay channel in the 1(2)-20 GeV/c transverse momentum range. A strong suppression is observed for π0 and η meson production at high transverse momentum in central Cu+Au collisions relative to the p+p results scaled by the number of nucleon-nucleon collisions. In central collisions the suppression is similar to Au+Au with comparable nuclear overlap. The η/π0 ratio measured as a function of transverse momentum is consistent with mT-scaling parameterization down to pT = 2 GeV/c, its asymptotic value is constant and consistent with Au+Au and p+p and does not show any significant dependence on collision centrality. Similar results were obtained in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions as well as in e+e− collisions in a range of collision energies √sNN = 3–1800 GeV. This suggests that the quark-gluon-plasma medium produced in Cu+Cu collisions either does not affect the jet fragmentation into light mesons or it affects the π0 and η the same way. Copyright © 2018, The Authors. All rights reserved.

关键词： Colliding beam accelerators

The mid-infrared imager, spectrometer, coronagraph (MISC) for the Origins Space telescope (OST)

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The mid-infrared imager, spectrometer, coronagraph (MISC) fo...

Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave

作者： Sakon, Itsuki Roellig, Thomas L. Ennico-Smith, Kimberly Matsuo, Taro Ikeda, Yuji Yamamuro, Tomoyasu Fujishiro, Naofumi Enya, Keigo Takahashi, Aoi Wada, Takehiko Guyon, Olivier Kotani, Takayuki Nishikawa, Jun Murakami, Naoshi Sarugaku, Yuki Burgarella, Denis Department of Astronomy Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan NASA Ames Research Center Moffett FieldCA94035 United States Department of Earth and Space Science Graduate School of Science Osaka University 1-1 Machikaneyamacho Toyonaka Osaka560-0043 Japan Photocoding 460-102 Iwakura-Nakamachi Sakyo-ku Kyoto606-0025 Japan Optocraft 3-16-8-101 Higashi Hashimoto Midori-ku Sagamihara Kanagawa252-0144 Japan General Medical Education and Research Center Teikyo University 2-11-1 Kaga Itabashi-ku Tokyo173-8605 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency 3-1-1 Yoshinodai Chuo-ku Sagamihara Kanagawa252-5210 Japan Subaru Telescope National Observatory of Japan National Institutes of Natural Sciences 650 N. A'ohoku Place HiloHI96720 United States National Astronomical Observatory of Japan 2-21-1 Osawa MitakaTokyo181-8588 Japan Hokkaido University Division of Applied Phys. Faculty of Engineering Kita13 Nishi8 Kita-ku Sapporo Hokkaido060-8628 Japan Deprtment of Physics Faculty of Science Kyoto-Sangyo University Motoyama Kamigamo Kita-Ku Kyoto-City603-8555 Japan Aix-Marseille University Laboratoire d'Astrophysique de Marseille Technopole de Chateau-Gombert 38 rue Joliot-Curie Marseille Cedex 1313388 France

ISBN: (数字)9781510619500

ISBN: (纸本)9781510619494

The Mid-infrared Imager, Spectrometer, Coronagraph (MISC) is one of the instruments studied both for the Origins Space Telescope (OST) Mission Concept 1 and 2. The MISC for OST Mission Concept 1 consists of the MISC imager and spectrometer module (MISC I and S), the MISC coronagraph module (MISC COR) and the MISC transit spectrometer module (MISC TRA). The MISC I and S offers (1) a wide field (3 arcminx3 arcmin) imaging and low-resolution spectroscopic capability with filters and grisms for 6-38 μm, (2) a medium-resolution (R∼1,000) Integral Field Unit (IFU) spectroscopic capability for 5- 38 μm and (3) a high-resolution (R∼25,000) slit spectroscopic capability for 12-18 μm and 25-36 μm. The MISC COR module employs PIAACMC coronagraphy method and covers 6-38 μm achieving 10-7 contrast at 0.5 arcsec from the central star. The MISC TRA module employs a densified pupil spectroscopic design to achieve 3-5 ppm of spectro-photometric stability and covers 5-26 μm with R=100-300. The MISC for OST Mission Concept 2 consists of the MISC wide field imager module (MISC WFI) and the MISC transit Spectrometer module (MISC TRA). The MISC WFI offers a wide field (3 arcmin ×3 arcmin) imaging and low-resolution spectroscopic capabilities with filters and grisms for 6-28μm. The MISC TRA module in the OST Mission Concept 2 also employs the densified pupil spectroscopic design to achieve © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Spectrometers

Mesoscopic quantum effects in a bad metal, hydrogen-doped vanadium dioxide

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arXiv 2017年

作者： Hardy, Will J. Ji, Heng Paik, Hanjong Schlom, Darrell G. Natelson, Douglas Applied Physics Graduate Program Smalley-Curl Institute Rice University 6100 Main St. HoustonTX77005 United States Department of Physics and Astronomy Rice University 6100 Main St. HoustonTX77005 United States Department of Materials Science and Engineering Cornell University IthacaNY14853 United States Kavli Institute at Cornell for Nanoscale Science IthacaNY14853 United States Department of Electrical and Computer Engineering Rice University 6100 Main St. HoustonTX77005 United States Department of Materials Science and Nanoengineering Rice University 6100 Main St. HoustonTX77005 United States

The standard treatment of quantum corrections to semiclassical electronic conduction assumes that charge carriers propagate many wavelengths between scattering events, and succeeds in explaining multiple phenomena (weak localization magnetoresistance (WLMR), universal conductance fluctuations, Aharonov-Bohm oscillations) observed in polycrystalline metals and doped semiconductors in various dimensionalities. We report apparent WLMR and conductance fluctuations in HxVO2, a poor metal (in violation of the Mott-Ioffe-Regel limit) stabilized by the suppression of the VO2 metal-insulator transition through atomic hydrogen doping. Epitaxial thin films, single-crystal nanobeams, and nanosheets show similar phenomenology, though the details of the apparent WLMR seem to depend on the combined effects of the strain environment and presumed doping level. Self-consistent quantitative analysis of the WLMR is challenging given this and the high resistivity of the material, since the quantitative expressions for WLMR are derived assuming good metallicity. These observations raise the issue of how to assess and analyze mesoscopic quantum effects in poor metals. Copyright © 2017, The Authors. All rights reserved.

关键词： Vanadium dioxide

Tomographic reconstruction of time-bin-entangled qudits

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Physical Review A 2016年第4期94卷 042328-042328页

作者： Samantha J. Nowierski Neal N. Oza Prem Kumar Gregory S. Kanter Center for Photonic Communication and Computing EECS Department Northwestern University 2145 Sheridan Road Evanston Illinois 60208-3118 USA Graduate Program in Applied Physics Northwestern University Evanston Illinois 60208 USA Department of Physics and Astronomy Northwestern University 2145 Sheridan Road Evanston Illinois 60208-3112 USA

We describe an experimental implementation to generate and measure high-dimensional time-bin-entangled qudits. Two-photon time-bin entanglement is generated via spontaneous four-wave mixing in single-mode fiber. Unbalanced Mach-Zehnder interferometers transform selected time bins to polarization entanglement, allowing standard polarization-projective measurements to be used for complete quantum state tomographic reconstruction. Here we generate maximally entangled qubits (d=2), qutrits (d=3), and ququarts (d=4), as well as other phase-modulated nonmaximally entangled qubits and qutrits. We reconstruct and verify all generated states using maximum-likelihood estimation tomography.

关键词： Entanglement detection Entanglement manipulation Quantum entanglement Quantum tomography