Entanglement distillation from Gaussian input states by coherent photon addition

Details Entanglement distillation from Gaussian input states by coherent photon addition Entanglement distillation from Gaussian input states by coherent photon addition

2009-09-17

arxiv.org/abs/0909.3282v3

Journal of Modern Optics, Vol. 58, No. 10, 10 June 2011, 835--838

Physics

Quantum Physics

5 pages, 1 figures

Scientific paper

10.1080/09500340.2011.575241

The entanglement between Gaussian entangled states can be increased by non-Gaussian operations. We design a new scheme named coherent photon addition, which can coherently add one photon generated by spontaneous parametric down conversation process to Gaussian quadrature-entangled light pulses created by a non-degenerate optical parametric amplifier. This operation can increase the entanglement of input two-mode Gaussian states as an entanglement distillation, and provides us a new method of non-Gaussian operation. This scheme can also help us to study the decoherence of adding one to two-mode Gaussian states from coherent photon addition to normal photon addition.

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