Fitzke, Erik ; Krebs, Robin ; Haase, Thorsten ; Mengler, Max ; Alber, Gernot ; Walther, Thomas (2022)
Time-dependent POVM reconstruction for single-photon avalanche photo diodes using adaptive regularization.
In: New Journal of Physics, 24 (2)
doi: 10.1088/1367-2630/ac5004
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We report on the first realization of time-dependent quantum detector tomography for commercially available InGaAs avalanche photo detectors. For the construction of appropriate time-dependent POVMs from experimentally measured data, we introduce a novel scheme to calculate the weight of the regularization term based on the amount of measured data. We compare our POVM-based results with the theoretical predictions of the previously developed model by Gouzien et al (2018 Phys. Rev. A 98 013833). In contrast to our measurement-based construction of a time-dependent POVM for photon detectors, this previous investigation extends a time-independent POVM to a time-dependent one by including effects of detector timing jitter and dead time on the basis of particular model assumptions concerning the inner physical mechanisms of a photon detector. Our experimental results demonstrate that this latter approach is not sufficient to completely describe the observable properties of our InGaAs avalanche photo detectors. Thus, constructing the time-dependent POVM of a detector by direct quantum tomographic measurements can reveal information about the detector's interior that may not easily be included in time-independent POVMs by a priori model assumptions.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Fitzke, Erik ; Krebs, Robin ; Haase, Thorsten ; Mengler, Max ; Alber, Gernot ; Walther, Thomas |
| Art des Eintrags: | Bibliographie |
| Titel: | Time-dependent POVM reconstruction for single-photon avalanche photo diodes using adaptive regularization |
| Sprache: | Englisch |
| Publikationsjahr: | 18 Februar 2022 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Physics |
| Jahrgang/Volume einer Zeitschrift: | 24 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1088/1367-2630/ac5004 |
| URL / URN: | https://iopscience.iop.org/article/10.1088/1367-2630/ac5004 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We report on the first realization of time-dependent quantum detector tomography for commercially available InGaAs avalanche photo detectors. For the construction of appropriate time-dependent POVMs from experimentally measured data, we introduce a novel scheme to calculate the weight of the regularization term based on the amount of measured data. We compare our POVM-based results with the theoretical predictions of the previously developed model by Gouzien et al (2018 Phys. Rev. A 98 013833). In contrast to our measurement-based construction of a time-dependent POVM for photon detectors, this previous investigation extends a time-independent POVM to a time-dependent one by including effects of detector timing jitter and dead time on the basis of particular model assumptions concerning the inner physical mechanisms of a photon detector. Our experimental results demonstrate that this latter approach is not sufficient to completely describe the observable properties of our InGaAs avalanche photo detectors. Thus, constructing the time-dependent POVM of a detector by direct quantum tomographic measurements can reveal information about the detector's interior that may not easily be included in time-independent POVMs by a priori model assumptions. |
| Freie Schlagworte: | Primitives, P4 |
| Zusätzliche Informationen: | Erstveröffentlichung |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche Profilbereiche Profilbereiche > Cybersicherheit (CYSEC) 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Angewandte Physik 05 Fachbereich Physik > Institut für Angewandte Physik > Laser und Quantenoptik 05 Fachbereich Physik > Institut für Angewandte Physik > Theoretische Quantenphysik DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 1119: CROSSING – Kryptographiebasierte Sicherheitslösungen als Grundlage für Vertrauen in heutigen und zukünftigen IT-Systemen |
| Hinterlegungsdatum: | 02 Mär 2022 09:09 |
| Letzte Änderung: | 03 Jul 2024 02:56 |
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Verfügbare Versionen dieses Eintrags
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Time-dependent POVM reconstruction for single-photon avalanche photo diodes using adaptive regularization. (deposited 11 Jul 2022 13:42)
- Time-dependent POVM reconstruction for single-photon avalanche photo diodes using adaptive regularization. (deposited 02 Mär 2022 09:09) [Gegenwärtig angezeigt]
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