aiqbench analysis
This paper is a theoretical quantum-optics treatment of photodetectors. It replaces the usual idealized photon-number model with Kraus operators that also account for inefficiency and a finite spectral response. For quantum-technology readers, the practical takeaway is guidance on matching a detector's spectral window to the incident light so that quantum effects are easier to observe. It is a modeling contribution, not a demonstrated device or a computing or communication result.
A complete quantum process model for physically realistic photo-detection in the joint photon-number and spectral degrees of freedom
arXiv:2610.18267v1 Announce Type: new Abstract: Photo-detection is a fundamental component of experimental photonics, yet theoretical models often treat detectors solely in the photon-number basis, neglecting other relevant degrees of freedom such as spectral characteristics. We present a complete quantum process model for physically realistic photodetection that incorporates both photon-number effects and frequency-dependent detector response, described through explicitly derived Kraus operators in the operator-sum representation. This formalism accommodates realistic inefficiencies, models detection within finite spectral windows, and can be directly substituted for idealized models in quantum optical analyses. The model leads to identifying the suitable detection window of the detectors relative to the spectral distribution of incident photons and conversely, in order to maximize the observability of quantum effects.
Abstract:Photo-detection is a fundamental component of experimental photonics, yet theoretical models often treat detectors solely in the photon-number basis, neglecting other relevant degrees of freedom such as spectral characteristics. We present a complete quantum process model for physically realistic photodetection that incorporates both photon-number effects and frequency-dependent detector response, described through explicitly derived Kraus operators in the operator-sum representation. This formalism accommodates realistic inefficiencies, models detection within finite spectral windows, and can be directly substituted for idealized models in quantum optical analyses. The model leads to identifying the suitable detection window of the detectors relative to the spectral distribution of incident photons and conversely, in order to maximize the observability of quantum effects.
arXiv:2610.18267 [quant-ph]
(or arXiv:2610.18267v1 [quant-ph] for this version)
https://doi.org/10.48550/arXiv.2610.18267 Focus to learn more arXiv-issued DOI via DataCite (pending registration)
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Full text under the publisher's open licence · 204 words
