Estimating the photon-number distribution of photonic channels with
realistic devices and applications in photonic quantum information processing
- URL: http://arxiv.org/abs/2102.08419v2
- Date: Sat, 11 Sep 2021 03:05:53 GMT
- Title: Estimating the photon-number distribution of photonic channels with
realistic devices and applications in photonic quantum information processing
- Authors: Emilien Lavie, Ignatius William Primaatmaja, Wen Yu Kon, Chao Wang,
Charles Ci Wen Lim
- Abstract summary: Characterising the input-output photon-number distribution of an unknown optical quantum channel is an important task for many applications in quantum information processing.
We propose a general method to rigorously bound the input-output photon number distribution of an unknown optical channel using standard optical devices.
- Score: 2.549884936158282
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Characterising the input-output photon-number distribution of an unknown
optical quantum channel is an important task for many applications in quantum
information processing. Ideally, this would require deterministic photon-number
sources and photon-number-resolving detectors, but these technologies are still
work-in-progress. In this work, we propose a general method to rigorously bound
the input-output photon number distribution of an unknown optical channel using
standard optical devices such as coherent light sources and
non-photon-number-resolving detectors/homodyne detectors. To demonstrate the
broad utility of our method, we consider the security analysis of practical
quantum key distribution systems based on calibrated single-photon detectors
and an experimental proposal to implement time-correlated single photon
counting technology using homodyne detectors instead of single-photon
detectors.
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