Photon-loss-tolerant Zeno controlled-SIGN gate

Casey R. Myers; Alexei Gilchrist

doi:10.1103/PhysRevA.75.052339

Photon-loss-tolerant Zeno controlled-SIGN gate

Casey R. Myers^*, Alexei Gilchrist

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We model an optical implementation of a controlled-SIGN gate that makes use of the quantum Zeno effect in the presence of photon loss. Gate operation is severely affected. However, we show that by using photon loss codes proposed for linear optical quantum computation (LOQC), performance is greatly enhanced, outperforming LOQC equivalents. The technique can be applied to other types of nonlinearities, making the implementation of nonlinear optical gates much more attractive.

Original language	English
Article number	052339
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	75
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.75.052339
Publication status	Published - 31 May 2007
Externally published	Yes

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10.1103/PhysRevA.75.052339

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abstract = "We model an optical implementation of a controlled-SIGN gate that makes use of the quantum Zeno effect in the presence of photon loss. Gate operation is severely affected. However, we show that by using photon loss codes proposed for linear optical quantum computation (LOQC), performance is greatly enhanced, outperforming 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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AB - We model an optical implementation of a controlled-SIGN gate that makes use of the quantum Zeno effect in the presence of photon loss. Gate operation is severely affected. However, we show that by using photon loss codes proposed for linear optical quantum computation (LOQC), performance is greatly enhanced, outperforming 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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Photon-loss-tolerant Zeno controlled-SIGN gate

Abstract

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