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Creators/Authors contains: "Polyakov, S. V."

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  1. ; ; ; ; ( , Conference on Lasers and Electro-Optics (CLEO))
    We experimentally obtain single-shot confidences of a state estimation measurement with M=8 arbitrary sets of non-orthogonal states. The 8-dimensional vector of confidences represents the best knowledge of the input state for each individual quantum measurement. 
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    Free, publicly-accessible full text available May 7, 2024
  2. ; ; ; ; ; ( , AVS Quantum Science)
    We experimentally demonstrate a quantum-measurement-based receiver for a range of modulation schemes and alphabet lengths in a telecom C-band. We attain symbol error rates below the shot noise limit for all the studied modulation schemes and the alphabet lengths 4≤M≤16. In doing so, we achieve the record energy sensitivity for telecom receivers. We investigate the trade-off between energy and bandwidth use and its dependence on the alphabet length. We identify the combined (energy and bandwidth) resource efficiency as a figure of merit and experimentally confirm that the quantum-inspired hybrid frequency/phase encoding has the highest combined resource efficiency. 
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    Full Text Available 
  3. ; ; ; ; ( , npj Quantum Information)
    Abstract

    We present a systematic study of quantum receivers and modulation methods enabling resource efficient quantum-enhanced optical communication. We introduce quantum-inspired modulation schemes that theoretically yield a better resource efficiency than legacy protocols. Experimentally, we demonstrate below the shot-noise limit symbol error rates forM ≤ 16 legacy and quantum-inspired communication alphabets using software-configurable optical communication time-resolving quantum receiver testbed. Further, we experimentally verify that our quantum-inspired modulation schemes boost the accuracy of practical quantum measurements and significantly optimize the combined use of energy and bandwidth for communication alphabets that are longer thanM = 4 symbols.

     
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  4. ; ; ( , AVS Quantum Science)
    null (Ed.)
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  5. ; ; ; ; ( , OSA Continuum)
  6. ; ; ; ; ( , Physical Review A)