Kabushiki Kaisha Toshiba

Beata Ewa Kardynal

Andrew James Shields

Zhiliang Yuan

Richard Mark Stevenson

According to one embodiment, a photon detection system determines the number of detected photons. The detection system includes an avalanche photodiode and a measuring unit. The measuring unit measures an avalanche signal induced by illumination before the avalanche current through the device has saturated.

Photon detection system and method of photon detection for determining the number of photons received at a photon detector

Photon detection system and method of photon detection

A circuit for conditioning the output of a single photon detector, the output of said detector having a stepped electrical output signal with respect to time, the circuit comprising a band pass amplifier, said band pass amplifier having a 3 dB breakpoint equal to and less than the inverse of the expected duration of the rising or falling step of said detector output.

Circuit for a single photon detector

A photon source includes a photon source body including quantum dots, a non-insulating layer overlying and in contact with the quantum dots, and an electrical contact that allows electrically activated emission of radiation from at least one of the quantum dots. An active region is defined within the photon source body such that emission is only collected from a dot or a limited number of dots within the active region.

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Cambridgeshire, United Kingdom

Beata Ewa Kardynal