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Optical hybrid quantum information processing aims at mixing the traditionally separated discrete (DV) and continuous variable (CV) tools and concepts. In this approach, both DV states, such as single photons, and CV states, for example Schrödinger cats states: |cat ±〉 ∝ |α〉 ± | − α〉, are used. Having succeeded in experimentally generating hybrid entanglement of light for flying qubits [2], we will...
Quantum storage of flying optical qubits, namely coherently mapping photonic states into and out of an optically controlled memory on demand, constitutes an essential component in the optical quantum information processing science, with applications to long-distance optical communication [1]. In this context, practical protocols require sufficiently large storage efficiency to achieve a performance...
We experimentally demonstrate a compact synchronized fiber laser system that enables fast and efficient coincidence single-photon frequency upconversion detection. Robust synchronization between the pump and signal pulses was achieved with a long-term stability. Moreover, the synchronized pulses were wellmatching in both of the time and spectrum domains. As a result, a coincidence single-photon frequency...
We demonstrated few-photon-level infrared imaging at 1040 nm by coincidence frequency upconversion with a high conversion efficiency of 31%. The full imaging was implemented without any scanning devices, thus gaining in simplicity and speed.
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