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2019 Fiscal Year Annual Research Report

Optical implementation of two-qubit nonlocal generalized quantum measurement

Research Project

Project/Area Number 18J10639
Research InstitutionTohoku University

Principal Investigator

Vidil Pierre  東北大学, 工学研究科, 特別研究員(DC2)

Project Period (FY) 2018-04-25 – 2020-03-31
Keywords量子計測 / 量子光学 / 量子もつれ
Outline of Annual Research Achievements

The optical setup to generate the hyper entangled photon pair has been completed by the final measurement stage, along with the electronics that are used to execute the coupling between the system state (polarization degree-of-freedom) and the meter state (time-of-arrival degree-of-freedom). The initial alignment yielded insufficient visibility at the output of the interferometer, which forced us to refine the original design and led to some delay in implementing the experiment and getting results. The superconducting nanowire single-photon detectors have been completely installed and are now ready to be used. All the theoretical results about nonlocal measurements without maximally-entangled meter states obtained so far have been summarized in a paper that has been uploaded on the arXiv, and which is to be submitted to a peer-reviewed journal soon.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (1 results)

All 2019

All Journal Article (1 results) (of which Open Access: 1 results)

  • [Journal Article] Nonlocal Generalized Quantum Measurements of Spin Products Without Maximal Entanglement2019

    • Author(s)
      Pierre Vidil, Keiichi Edamatsu
    • Journal Title

      arXiv Preprint [quant-ph]

      Volume: 1912.07135 Pages: 1-8

    • Open Access

URL: 

Published: 2021-01-27  

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