X-Ray Induced Secondary Particle Counting With Thin NbTiN Nanowire Superconducting Detector

photon-counting optical communications using a superconducting nanowire detector

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Superconducting-nanowire single-photon-detector linear array

781 Mbit/s photon-counting optical communications using a superconducting nanowire detector.

We demonstrate 1550 nm photon-counting optical communications with a NbN-nanowire superconducting single-photon detector. Source data are encoded with a rate-1/2 forward-error correcting code and transmitted by use of 32-ary pulse-position modulation at 5 and 10 GHz slot rates. Error-free performance is obtained with -0.5 detected photon per source bit at a source data rate of 781 Mbits/s. To t...

1.25-Gbit/s photon-counting optical communications using a two- element superconducting nanowire single photon detector

The sensitivity of a high-rate photon-counting optical communications link depends on the performance of the photon counter used to detect the optical signal. In this paper, we focus on ways to reduce the effect of blocking, which is loss due to time periods in which the photon counter is inactive following a preceding detection event. This blocking loss can be reduced by using an array of phot...

Superconducting Nanowire Photon-Counting Detectors for Optical Communications

Photon-counting detectors can be used in optical communications links to provide a large enhancement in receiver sensitivity over conventional photodetectors at near-infrared wavelengths (1.3–1.55 microns) [1]. However, the highest data rate that has been demonstrated to date using these techniques is about 100 kbits/sec for a receiver consisting of a single InGaAs avalanche photodiode (APD), w...