Waveguide superconducting single-photon detectors for integrated quantum photonic circuits
Fri, 2012-03-30 15:53 - Q-Essence Coordinator
Date:
2011-11-01
Reference:
Appl. Phys. Lett. 99, 181110 (2011)
The monolithic integration of single-photon sources, passive optical circuits and single-photon detectors enables complex and scalable quantum photonic integrated circuits, for application in linear-optics quantum computing and quantum communications. Here we demonstrate a key component of such a circuit, a waveguide single-photon detector. Our detectors, based on superconducting nanowires on GaAs ridge waveguides, provide high efficiency ( 20%) at telecom wavelengths, high timing accuracy ( 60 ps), response time in the ns range, and are fully compatible with the integration of single-photon sources, passive networks and modulators.
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