Einstein-Podolsky-Rosen steering in two-sided sequential measurements with one entangled pair
نویسندگان
چکیده
Non-locality and quantum measurement are two fundamental topics in theory theirinterplay attracts intensive focus since the discovery of Bell theorem. sharing amongmultiple observers is predicted experimentally observed. However, only one-sided sequentialcase, i.e., one Alice multiple Bobs widely discussed little known about two-sided case.Here, we theoretically explore non-locality sequentialmeasurements case which entangled pair distributed to Alices Bobs. Weexperimentally observed double EPR steering among four photonic system for thefirst time. In that all adopt same strength, it observedthat can be demonstrated simultaneously while Bell-CHSH inequalityviolations shown impossible. The exact formula relating quantity sequential weakmeasurements arbitrary many also derived, showing no more doubleBell-CHSH inequality violations possible under unbiased input condition. results not onlydeepen our understanding relation between measurements but alsomay find important applications information tasks.
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Article history: Received 18 September 2013 Received in revised form 18 December 2013 Accepted 15 January 2014 Available online 21 January 2014 Communicated by P.R. Holland
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2022
ISSN: ['1538-4446', '1050-2947', '1094-1622']
DOI: https://doi.org/10.1103/physreva.105.032211