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120 篇 会议

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检索条件"任意字段=Conference on Advances in Photonics of Quantum Computing, Memory, and Communication XII"

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advances in photonics of quantum computing, memory, and communication xii

Advances in Photonics of Quantum Computing, Memory, and Comm...

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advances in photonics of quantum computing, memory, and communication xii 2019

ISBN: (纸本)9781510625082

The proceedings contain 15 papers. The topics discussed include: towards fast and scalable trapped-ion quantum logic with integrated photonics;deterministic two-photon controlled phase gate by exploiting nonlinear pi-phase shift in photonic molecule generations;a post-processing-free single-photon random number generator with ultra-low latency;improved reconciliation for continuous-variable quantum key distribution;hyper-entanglement signals in quantum optical circuits;towards highly-efficient single-photon storage based on electromagnetically induced transparency;spatial multiplexing in a cavity-enhanced quantum memory;and towards a new platform for quantum photonics applications.

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Single Vanadium Dioxide Nanoparticle-Enabled Plasmonic switch with Thermal and Electronic Reconfigurability

Single Vanadium Dioxide Nanoparticle-Enabled Plasmonic switc...

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OptoElectronics and communications conference, OECC

作者： Gregory Tanyi Daniel Peace Han-Hao Cheng Guanghui Ren Xuan Hiep Dinh Mohammed Taha Arnan Mitchell Karsten Hoehn Christina Lim Ranjith Unnithan Department of Electrical and Electronic Engineering Faculty of Engineering and Information Technology The University of Melbourne Parkville VIC Australia Mineral Resources Commonwealth Scientific Industry and Research Organiasation Australian Research Council Centre of Excellence for Engineered Quantum Systems & School of Mathematics and Physics The University of Queensland St Lucia Queensland Australia Centre for Microscopy and Microanalysis The University of Queensland St Lucia Australia Integrated Photonics and Applications Centre School of Engineering RMIT University Melbourne Victoria Australia

ISBN: (数字)9798350308396

ISBN: (纸本)9798350308402

We present an integrated switch that combines plasmonic and neuromorphic technologies with a single sub-stoichiometric VO2-x nanoparticle. The presented device acts as a versatile plasmonic switch with dual thermal and electrical reconfigurability leveraging the near-room temperature phase transition of the VO2-x nanoparticles combined with the rapid phase recovery to drive the device. The change in both the optical and electrical properties of the VO2-x nanoparticle enables simultaneous optical and electrical readouts making the plasmonic device suitable as a phase change memory cell which is crucial in the convergence of computing and communication technologies. Our demonstration of reversible electrical switching, evidenced by a 6dB modulation depth and concurrent optical and electrical outputs, signifies a major stride in merging electronic and photonic functionalities within phase-change material devices. This novel strategy not only harmonizes optical communication with electronic computing but also advances the development of sophisticated integrated neuromorphic devices.

关键词： Phase change materials Nanoparticles Neuromorphic engineering Optical switches Vanadium Plasmons Nanoscale devices Optical modulation Optical devices Switching circuits

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quantum Walks in Quasi-Periodic Arrays of Waveguides 12

Quantum Walks in Quasi-Periodic Arrays of Waveguides

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Nguyen, Dan T. Nolan, Daniel A. Borrelli, Nicholas F. Corning Res & Dev Corp Sullivan Pk Corning NY 14831 USA

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

In this paper, we present results of numerical investigation of quantum walks (QWs) in different type arrays of single-mode waveguides: (i) regular arrays of identical waveguides (AIW), (ii) periodic arrays of two different waveguides (PAW), (iii) quasi-periodic arrays of waveguides with Fibonacci sequences (FAW), (iv) quasi-periodic arrays of waveguides with Thue-Morse sequences (TMAW). Our simulations show in contrast with randomly disordered systems, localized QWs in quasi-periodic arrays of waveguides FAWs and TMAWs are predictable and controllable due to the deterministic disorder nature of the quasi-periodic systems.

关键词： Waveguides Beam propagation method quantum communications quantum computing Single photon Optical simulations Computer simulations Light wave propagation Photons

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Time dependent metrology: Improving precision through coherent control 12

Time dependent metrology: Improving precision through cohere...

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Jordan, Andrew N. Univ Rochester Dept Phys & Astron Rochester NY 14627 USA Chapman Univ Inst Quantum Studies Orange CA 92866 USA

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

This paper will overview recent progress in time-dependent metrology. By applying coherent control to a quantum system, we will demonstrate that the amount of information about a parameter can be increased by typically a power law in the duration time of the experiment. Several examples will be given: measurement of an external oscillation frequency, the Landau-Zehner transition, and the details of a recent experiment realizing these physical predictions. A simple example will be analyzed in detail to illustrate the ingredients of the theory.

关键词： quantum Metrology Frequency Estimation Coherent Control

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Spatial Multiplexing in a Cavity-Enhanced quantum memory 12

Spatial Multiplexing in a Cavity-Enhanced Quantum Memory

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Kunz, Paul D. Santra, Siddhartha Meyer, David H. Castillo, Zachary A. Malinovsky, Vladimir S. Cox, Kevin C. US Army Res Lab Adelphi MD 20783 USA Univ Maryland Dept Phys College Pk MD 20742 USA

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

We present a multiplexed quantum repeater protocol based on an ensemble of laser-cooled and trapped rubidium atoms inside an optical ring cavity. We have already demonstrated strong collective coupling in such a system and have constructed a multiplexing apparatus based on a two-dimensional acousto-optical deflector. Here, we show how this system could enable a multiplexed quantum repeater using collective excitations with non-trivial spatial phase profiles (spinwaves). Calculated entanglement generation rates over long distances reveal that such a multiplexed ensemble-cavity platform is a promising route towards long distance quantum entanglement and networking.

关键词： quantum Repeater quantum memory Optical Cavity Multiplexing Optimized Architecture

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Towards a new platform for quantum photonics applications 12

Towards a new platform for quantum photonics applications

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Couteau, Christophe Nahra, Mackrine Muhammad, Muhammad H. Pierini, Stefano Xu, Xiaolun Broussier, Aurelie Bachelot, Renaud Blaize, Sylvain Univ Technol Troyes CNRS ICD L2n 12 Rue Marie Curie Troyes France

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

quantum technologies and most specifically quantum simulation, are seen to be within reach for ripe applications with recent developments in quantum optics and photonics resulting into better control of quantum systems. Many platforms, such as photonic crystals and cavities involving complex fabrications, have been proposed towards the collection of light from single nanoscale emitters. We will report different strategies to realise efficient light-matter interaction at the single photon/single emitter level. The first one will be the efficient excitation of a single photon source using a nanowaveguide and the second one will be on some new developments with optical waveguides using the so-called ion-exchange technique where single emitters can be efficiently coupled to integrated optics. In our case the single emitters are semiconductor nanocrystals and colour centres in nanodiamonds. A first step will be to demonstrate an integrated single photon source within our new platform.

关键词： quantum optics photonics integrated optics quantum communications

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Towards fast and scalable trapped-ion quantum logic with integrated photonics 12

Towards fast and scalable trapped-ion quantum logic with int...

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Mehta, Karan K. Zhang, Chi Miller, Stefanie Home, Jonathan P. Swiss Fed Inst Technol Inst Quantum Elect Dept Phys Otto Stern Weg 1 CH-8093 Zurich Switzerland

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

Trapped-ion qubits promise certain fundamental advantages for quantum information processing (QIP), owing to their indistinguishability and relatively high isolation from noisy environments. Though these qualities have allowed demonstrations of the necessary primitives for quantum computation, the complexity of the optical apparatus required is a major impediment to implementation at scales where quantum systems offer a clear advantage over classical computers. Here, we build on previous work with trap-integrated waveguide optics, describing designs and simulations for commercial foundry-fabricated ion trap chips with integrated Si3N4 waveguides and grating couplers to implement multi-qubit operations. We detail a design intended to address and implement quantum logic gates between 5 ions in a single register, and a configuration which utilizes the stable on-chip path lengths of waveguide devices to enact a novel fast entangling two-qubit gate. The devices and approaches presented here could form elements of a scalable architecture for trapped-ion QIP.

关键词： quantum information trapped ions waveguides gratings integrated photonics

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Towards highly-efficient single-photon storage based on electromagnetically induced transparency 12

Towards highly-efficient single-photon storage based on elec...

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Tsai, Pin-Ju Hsiao, Ya-Fen Chen, Ying-Cheng Acad Sinica Inst Atom & Mol Sci Taipei 10617 Taiwan Natl Taiwan Univ Dept Phys Taipei 10617 Taiwan Acad Sinica Taiwan Int Grad Program Mol Sci & Technol Taipei 10617 Taiwan Natl Cent Univ Taipei 10617 Taiwan

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

Optical quantum memories are important components in the long-distance quantum communication based on quantum repeater protocol. To outperform the direct transmission of light with quantum repeaters, it is crucial to develop quantum memories with high fidelity, high efficiency and long storage time. Recently, we demonstrate that it is feasible to achieve a high storage efficiency of 92% for electromagnetically-induced-transparency (EIT)-based memory with weak coherent signal pulses in cold atomic ensembles [1] To realize the highly-efficient memory with quantum light, we have built a bright and narrowband photon-pair source which can be locked to atomic transition based on the cavity-enhanced spontaneous parametric down conversion [2]. Here, we present our results on the storage of single photons generated by such a source in EIT-based memories. A storage efficiency of 36% is obtained in initial runs. Future improvements toward a high efficiency are discussed. Such a development paves the way for the applications of photon-pair-based quantum repeater and multi-photon synchronization.

关键词： optical quantum memory single photon quantum repeater electromagnetically induced transparency

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Deterministic Two-photon Controlled Phase Gate By Exploiting Nonlinear Pi-Phase Shift in Photonic Molecule Generations 12

Deterministic Two-photon Controlled Phase Gate By Exploiting...

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Chen, Zihao Zhou, Yao Shen, Jung-Tsung Washington Univ Dept Elect & Syst Engn St Louis MO 63130 USA

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

To resolve the intrinsic trade-off between the deterministic nature and scalability of controlled phase gate implementation in the linear optics regime, we propose a novel deterministic two-photon controlled phase gate scheme in chiral quantum nanophotonics. The essential ingredient here is that, a non-linear it-phase shift is imprinted during the photonic molecule generations. On one hand, the gate operates in a deterministic way without the assistance of probabilistic ancilla qubit measurement. On the other hand, the gate implementation is of low complexity to be highly scalable. To date, the chiral coupling is readily underpinned by the advent of directional emission technique. Potential implementation platforms include QD, superconducting qubit, Rydberg atom, or N-V center that is coupled to a PhC waveguide, transmission line, or optical fiber.

关键词： Controlled phase gate controlled-Z gate quantum computing quantum logic gate frequency based qubit photonic bound state photonic molecule photon scattering nonlinear phase shift quantum nanophotonics chiral coupling waveguide QED

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Single-channel Hadamard Gate By Exploiting Frequency Conversion of Single-photon Raman Scattering in Chiral quantum Nanophotonics 12

Single-channel Hadamard Gate By Exploiting Frequency Convers...

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conference on advances in photonics of quantum computing, memory, and communication xii

作者： Chen, Zihao Zhou, Yao Shen, Jung-Tsung Washington Univ Dept Elect & Syst Engn St Louis MO 63130 USA

ISBN: (数字)9781510625099

ISBN: (纸本)9781510625099

To enhance the spatial utility of typical two-port Hadamard gate, we propose a novel single-channel scheme through frequency conversion in A-atom-mediated single-photon Raman scattering process in chiral quantum nanophotonics. We demonstrate faithful and efficient gate operations, and quantitatively analyze gate performance. Moreover, by manipulating photon-emitter coupling and frequency detuning, it is confirmed that an arbitrary unitary single-qubit operations are achieved in the presented configuration, including most representative single-qubit Hadamard, X, Z, S, and T gates. Due to the advent of directional emission techniques, the chiral condition is readily experimentally feasible. In addition, we further propose an alternative N-type atom architecture to perform Hadamard operations that are enabled by hyperfine structure in the strong-coupling regime.

关键词： Hadamard gate quantum computing X gate Z gate S gate T gate Lambda-type atom frequency conversion chiral coupling single-photon Raman scattering quantum nanophotonics waveguide QED N-type atom

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