A photon loss tolerant Zeno CSIGN gate

Details A photon loss tolerant Zeno CSIGN gate A photon loss tolerant Zeno CSIGN gate

2006-12-20

arxiv.org/abs/quant-ph/0612176v1

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.75.052339

We model an optical implementation of a CSIGN gate that makes use of the Quantum Zeno effect [1,2] in the presence of photon loss. The raw operation of the gate is severely affected by this type of loss. However, we show that by using the same photon loss codes that have been proposed for linear optical quantum computation (LOQC), the performance is greatly enhanced and such gates can outperform LOQC equivalents. The technique can be applied to other types of nonlinearities, making the implementation of nonlinear optical gates much more attractive.

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