On-chip, photon-number-resolving, telecommunication-band detectors for scalable photonic information processing
- National Institute of Standards and Technology, Boulder, Colorado, 80305 (United States)
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)
- Optoelectronics Research Centre, University of Southampton, Highfield SO17 1BJ (United Kingdom)
Integration is currently the only feasible route toward scalable photonic quantum processing devices that are sufficiently complex to be genuinely useful in computing, metrology, and simulation. Embedded on-chip detection will be critical to such devices. We demonstrate an integrated photon-number-resolving detector, operating in the telecom band at 1550 nm, employing an evanescently coupled design that allows it to be placed at arbitrary locations within a planar circuit. Up to five photons are resolved in the guided optical mode via absorption from the evanescent field into a tungsten transition-edge sensor. The detection efficiency is 7.2{+-}0.5 %. The polarization sensitivity of the detector is also demonstrated. Detailed modeling of device designs shows a clear and feasible route to reaching high detection efficiencies.
- OSTI ID:
- 22095513
- Journal Information:
- Physical Review. A, Vol. 84, Issue 6; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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