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Linear optics substituting scheme for multi-mode operations

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arxiv quant-ph/0303004 v1 pith:6WPTQ3F5 submitted 2003-03-02 quant-ph

Linear optics substituting scheme for multi-mode operations

classification quant-ph
keywords multi-modeschemesignalstatesallowingmodessingle-photonacting
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We propose a scheme allowing a conditional implementation of suitably truncated general single- or multi-mode operators acting on states of traveling optical signal modes. The scheme solely relies on single-photon and coherent states and applies beam splitters and zero- and single-photon detections. The signal flow of the setup resembles that of a multi-mode quantum teleportation scheme thus allowing the individual signal modes to be spatially separated from each other. Some examples such as the realization of cross-Kerr nonlinearities, multi-mode mirrors, and the preparation of multi-photon entangled states are considered.

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