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Träfflista för sökning "WFRF:(Mironowicz Piotr) srt2:(2020)"

Sökning: WFRF:(Mironowicz Piotr) > (2020)

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1.
  • Hameedi, Alley, et al. (författare)
  • Experimental test of nonclassicality with arbitrarily low detection efficiency
  • 2020
  • Ingår i: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - 2469-9926 .- 2469-9934. ; 102:3
  • Tidskriftsartikel (refereegranskat)abstract
    • We theoretically introduce and experimentally demonstrate the realization of a nonclassicality test that allows for arbitrarily low detection efficiency without invoking an extra assumption of independence of the devices. Our test and its implementation is set in a prepare-and-measure scenario with an upper limit on the classical communication capacity of the channel through which the systems are communicated. The essence for our test is the use of two preparation and two measurement devices, which are randomly paired in each round. Our work opens the possibility for experimental realizations of nonclassicality tests with off-the-shelf technology.
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2.
  • Smania, Massimiliano, et al. (författare)
  • Experimental certification of an informationally complete quantum measurement in a device-independent protocol
  • 2020
  • Ingår i: Optica. - 2334-2536. ; 7:2, s. 123-128
  • Tidskriftsartikel (refereegranskat)abstract
    • Minimal informationally complete positive operator-valued measures (MIC-POVMs) are special kinds of measurement in quantum theory in which the statistics of their d(2)-outcomes are enough to reconstruct any d-dimensional quantum state. For this reason, MIC-POVMs are referred to as standard measurements for quantum information. Here, we report an experiment with entangled photon pairs that certifies, for what we believe is the first time, a MIC-POVM for qubits following a device-independent protocol (i.e., modeling the state preparation and the measurement devices as black boxes, and using only the statistics of the inputs and outputs). Our certification is achieved under the assumption of freedom of choice, no communication, and fair sampling.
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