Self-stabilized quantum optical Fredkin gate

Jonathan Hu*, Yu Ping Huang, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The quantum optical Fredkin gate is an indispensable resource for networkable quantum applications. Its performance in practical implementations, however, is limited fundamentally by the inherent quantum fluctuations of the pump waves. We demonstrate a method to overcome this drawback by exploiting stimulated Raman scattering in fiber-based implementations. Using a Sagnac fiber-loop switch as a specific example, we show that high switching contrast can be maintained even in the presence of significant pump fluctuations. This unique feature of selfstabilization, together with high-speed and low-loss performance of such devices, point to a viable technology for practical quantum communications.

Original languageEnglish (US)
Pages (from-to)522-524
Number of pages3
JournalOptics Letters
Issue number4
StatePublished - Feb 15 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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