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Paper detail

Optical control of single-photon negative-feedback avalanche diode detector

We experimentally demonstrate optical control of negative-feedback avalanche diode (NFAD) detectors using bright light. We deterministically generate fake single-photon detections with a better timing precision than normal operation. This could potentially open a security loophole in quantum cryptography systems. We then show how monitoring the photocurrent through the avalanche photodiode can be used to reveal the detector is being blinded.

preprint2020arXivOpen access
Gaëtan GrasNigar SultanaAnqi HuangThomas JenneweinFélix BussièresVadim MakarovHugo Zbinden
quant-ph
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Gaëtan GrasNigar SultanaAnqi HuangThomas JenneweinFélix BussièresVadim MakarovHugo Zbinden

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