Continuous-variable quantum non-demolishing interaction at a distance

Details Continuous-variable quantum non-demolishing interaction at a distance Continuous-variable quantum non-demolishing interaction at a distance

2004-04-01

arxiv.org/abs/quant-ph/0404010v1

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.69.052313

A feasible setup of continuous-variable (CV) quantum non-demolishing (QND) interaction at a distance is proposed. If two distant experimentalists are able to locally perform identical QND interactions then the proposed realization requires only a single quantum channel and classical communication between them. A possible implementation of the proposed setup in recent quantum optical laboratories is discussed and an influence of Gaussian noise in the quantum channel on a quality of the implementation is analyzed. An efficient realization of the QND interaction at a distance can be a basic step to possible distributed quantum CV experiments between the distant laboratories.

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