Faking photon number on a transition-edge sensor
- URL: http://arxiv.org/abs/2102.08746v3
- Date: Fri, 19 Feb 2021 16:14:57 GMT
- Title: Faking photon number on a transition-edge sensor
- Authors: Poompong Chaiwongkhot, Jiaqiang Zhong, Anqi Huang, Hao Qin, Sheng-cai
Shi, and Vadim Makarov
- Abstract summary: We study potential security vulnerabilities of a single-photon detector based on superconducting transition-edge sensor.
We show that an adversary could fake a photon number result at a certain wavelength by sending a larger number of photons at a longer wavelength.
We model an intercept-and-resend attack on a quantum key distribution system that exploits the latter vulnerability and, under certain assumptions, succeeds to steal the key.
- Score: 0.5937476291232802
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We study potential security vulnerabilities of a single-photon detector based
on superconducting transition-edge sensor. In a simple experiment, we show that
an adversary could fake a photon number result at a certain wavelength by
sending a larger number of photons at a longer wavelength. In another
experiment, we show that the detector can be blinded by bright continuous-wave
light and then, a controlled response simulating single-photon detection can be
produced by applying a bright light pulse. We model an intercept-and-resend
attack on a quantum key distribution system that exploits the latter
vulnerability and, under certain assumptions, succeeds to steal the key.
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