Abstract
We propose a quantum switch for telecom-band applications that is composed of a 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, radius GaAs microdisk with an intrinsic Q of and a fiber-cavity-coupling Q of can achieve low-loss () switching for gigahertz-rate O-band quantum signals with milliwatt-peak-power pumps in the C band.
© 2010 Optical Society of America
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