Programmable entanglement oscillations in a non Markovian channel

Details Programmable entanglement oscillations in a non Markovian channel Programmable entanglement oscillations in a non Markovian channel

2010-09-16

arxiv.org/abs/1009.3228v1

Phys. Rev. A 83, 042308 (2011)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

We suggest and demonstrate an all-optical experimental setup to observe and engineer entanglement oscillations of a pair of polarization qubits in a non-Markovian channel. We generate entangled photon pairs by spontaneous parametric downconversion (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 and to create an effective non-Markovian environment. Modulation of the enviroment spectrum is obtained by inserting a spatial grating on the signal arm. In our experiment, programmable oscillations of entanglement are achieved, with the maximally revived state that violates Bell's inequality by 17 standard deviations.

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