Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors

Details Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors

2004-08-03

arxiv.org/abs/quant-ph/0408026v1

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

10.1016/j.optcom.2005.05.033

We devise a new technique to enhance transmission of quantum information through linear optical quantum information processors. The idea is based on applying the Quantum Zeno effect to the process of photon absorption. By frequently monitoring the presence of the photon through a QND (quantum non-demolition) measurement the absorption is suppressed. Quantum information is encoded in the polarization degrees of freedom and is therefore not affected by the measurement. Some implementations of the QND measurement are proposed.

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