Conditional generation of an arbitrary superposition of coherent states

Details Conditional generation of an arbitrary superposition of coherent states Conditional generation of an arbitrary superposition of coherent states

2007-02-13

arxiv.org/abs/quant-ph/0702126v1

Phys. Rev. A 75, 064302 (2007)

Physics

Quantum Physics

7 pages, 5 figures

Scientific paper

10.1103/PhysRevA.75.064302

We present a scheme to conditionally generate an arbitrary superposition of a pair of coherent states from a squeezed vacuum by means of the modified photon subtraction where a coherent state ancilla and two on/off type detectors are used. We show that, even including realistic imperfections of the detectors, our scheme can generate a target state with a high fidelity. The amplitude of the generated states can be amplified by conditional homodyne detections.

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