Photon-loss-tolerant Zeno controlled-SIGN gate

Casey R. Myers*, Alexei Gilchrist

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


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 languageEnglish
Article number052339
Pages (from-to)1-5
Number of pages5
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
Publication statusPublished - 31 May 2007
Externally publishedYes


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