Programmable entanglement oscillations in a non-Markovian channel

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.042308· OSTI ID:21544575

Cialdi, Simone ^[1]; Brivio, Davide; Tesio, Enrico; Paris, Matteo G. A. ^[1]

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1. Dipartimento di Fisica dell'Universita degli Studi di Milano, I-20133 Milan (Italy)

We suggest and demonstrate an all-optical experimental setup to observe and engineer entanglement oscillations of a pair of polarization qubits in an effective non-Markovian channel. We generate entangled photon pairs by spontaneous parametric down-conversion (SPDC), and then insert a programmable spatial light modulator in order to impose a polarization-dependent phase shift on the spatial domain of the SPDC output. This creates an effective programmable non-Markovian environment where modulation of the environment spectrum is obtained by inserting a spatial grating on the signal arm. In our experiment, programmable oscillations of entanglement are achieved, where the entangled state obtained at the maximum of the revival after sudden death violates Bell's inequality by 17 standard deviations.

• OSTI ID: 21544575
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BELL THEOREM
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FREQUENCY MODULATION
INFORMATION
MARKOV PROCESS
MASSLESS PARTICLES
MODULATION
OSCILLATIONS
PHASE SHIFT
PHOTONS
POLARIZATION
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
QUBITS
RADIATIONS
SIGNALS
SPECTRA
STOCHASTIC PROCESSES
VISIBLE RADIATION