Solid state potentiometry measures ion concentration is explored for ocean sciences. A small, low cost and low power sensor to measure salinity is currently not available in ocean sciences, but could unlock large scal...
Solid state potentiometry measures ion concentration is explored for ocean sciences. A small, low cost and low power sensor to measure salinity is currently not available in ocean sciences, but could unlock large scale spatial and temporal characterization of oceanographic areas of interest, such as the Arctic or coastal environments. To date these types of sensors are typically calibrated before each measurement, and target low concentrations. The challenge for these oceanographic environments is that the relevant concentration is much higher than usual for these sensors, and that calibration cannot take place before each measurement as buoy deployment is necessary for long term data collection. We are developing a small, low power salinity sensor based on chloride ion measurement, targeted at 20 ppt to 40 ppt, at sensitivities of 0.1 ppt. Here, we present current characterization results with respect to chloride ion concentration, temperature, and drift, and discuss methods to reduce and potentially measure drift in-situ.
Conformal transformation provides an effective way to detect optical orbital angular momentum (OAM). We demonstrate here a second-harmonic spiral transformation that enables infrared-visible detection of OAM states wi...
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ISBN:
(纸本)9781957171258
Conformal transformation provides an effective way to detect optical orbital angular momentum (OAM). We demonstrate here a second-harmonic spiral transformation that enables infrared-visible detection of OAM states with a low energy loss. Remarkably, we predict and observe a record-high optical finesse, indicating improved separation efficiency enabled by this method.
Photonics provide an efficient way to implement quantum walks, the quantum analog of classical random walks, which demonstrate rich physics with potential applications. However, most photonic quantum walks do not invo...
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Photonics provide an efficient way to implement quantum walks, the quantum analog of classical random walks, which demonstrate rich physics with potential applications. However, most photonic quantum walks do not involve photon interactions, which limits their potential to explore strongly correlated many-body physics of light. We propose a strongly interacting discrete-time photonic quantum walk using a network of single atom beamsplitters. We calculate output statistics of the quantum walk for the case of two photons, which reveals the strongly correlated transport of photons. Particularly, the walk can exhibit either bosonlike or fermionlike statistics which is tunable by postselecting the two-photon detection time interval. Also, the walk can sort different types of two-photon bound states into distinct pairs of output ports under certain conditions. These unique phenomena show that our quantum walk is an intriguing platform to explore strongly correlated quantum many-body states of light. Finally, we propose an experimental realization based on time-multiplexed synthetic dimensions.
Qubits that are intrinsically insensitive to depolarization and dephasing errors promise to significantly reduce the overhead of fault-tolerant quantum computing. At their optimal operating points, the logical states ...
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Methods for harnessing vibrational states are desired for phonon-based technologies. We realized ultrastrong coupling of two phonon modes in perovskite materials induced by ultrastrong coupling with a common photonic ...
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Reagentless optics-based techniques, such as fluorimetry, outperform all current methods in all key requirement categories for microbial risk assessment of potable water in resource-limited settings, provided that the...
Since Thailand has now completely stepped into an aged society there are more than 20% of the population aged 60 years and over. There was also an increase in those who had problems with their balance. One of the main...
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Reagentless optics-based techniques, such as fluorimetry, outperform all current methods in all key requirement categories for microbial risk assessment of potable water in resource-limited settings, provided that the...
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Superconducting-nanostrip photon detectors with optical sampling method now function as true photon-number resolving detectors in real-time without multiplexing. We applied this technique for quantum state generation ...
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We describe innovative concepts associated with optical switching nodes and their transceiver interfaces that enable energy-efficient flexible capacity scaling (>10 Tb/s per interface, > 1Pb/s capacity per link ...
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ISBN:
(纸本)9798350369311
We describe innovative concepts associated with optical switching nodes and their transceiver interfaces that enable energy-efficient flexible capacity scaling (>10 Tb/s per interface, > 1Pb/s capacity per link and > 10 Pb/s throughput per node).
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