Integration all-optical switching in χ(2) microdisks for quantum applications

Yu Ping Huang*, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We propose a quantum switch for telecom-band applications that is composed of a χ(2) microdisk coupled to two fibers (or waveguides). The idea is to apply a pump pulse to shift the microdisk out of resonance, thereby switching the device between the cross and bar states in an interaction-free manner. As an example, a 2.5-μm-thick, 10 μm radius GaAs microdisk with an intrinsic Q of ∼108 and a fiber-cavity-coupling Q of ∼104 can achieve low-loss (≲1%) switching for gigahertz-rate O-band quantum signals with milliwatt-peak-power pumps in the C band.

Original languageEnglish (US)
Pages (from-to)2376-2378
Number of pages3
JournalOptics Letters
Issue number14
StatePublished - Jul 15 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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