Imperfect photon detection in quantum illumination
- URL: http://arxiv.org/abs/2308.02343v1
- Date: Fri, 4 Aug 2023 14:18:06 GMT
- Title: Imperfect photon detection in quantum illumination
- Authors: F. Kronowetter, M. W\"urth, W. Utschick, R. Gross, K. G. Fedorov
- Abstract summary: In quantum illumination, various detection schemes have been proposed for harnessing remaining quantum correlations of the entanglement-based resource state.
We investigate the performance of this scheme for realistic detection parameters in terms of detection efficiency, dark count probability, and photon number resolution.
We find that the requirements for photon number resolution in the two mixer outputs are highly asymmetric due to different associated photon number expectation values.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In quantum illumination, various detection schemes have been proposed for
harnessing remaining quantum correlations of the entanglement-based resource
state. To this date, the only successful implementation in the microwave domain
relies on a specific mixing operation of the respective return and idler modes,
followed by single-photon counting in one of the two mixer outputs. We
investigate the performance of this scheme for realistic detection parameters
in terms of detection efficiency, dark count probability, and photon number
resolution. Furthermore, we take into account the second mixer output and
investigate the advantage of correlated photon counting (CPC) for a varying
thermal background and optimum post-processing weighting in CPC. We find that
the requirements for photon number resolution in the two mixer outputs are
highly asymmetric due to different associated photon number expectation values.
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