Optimal storage of a single photon by a single intra-cavity atom
peer-reviewed
Erstveröffentlichung
2018-10-29Authors
Giannelli, Luigi
Schmit, Tom
Calarco, Tommaso
Koch, Christiane P.
Ritter, Stephan
Wissenschaftlicher Artikel
Published in
New Journal of Physics ; 20 (2018), 10. - Art.-Nr. 105009. - eISSN 1367-2630
Link to original publication
https://dx.doi.org/10.1088/1367-2630/aae725Faculties
Fakultät für NaturwissenschaftenInstitutions
Institut für Komplexe QuantensystemeCenter for Integrated Quantum Science and Technology (IQST)
Document version
published version (publisher's PDF)Abstract
Abstract
We theoretically analyze the efficiency of a quantum memory for single photons. The photons propagate along a transmission line and impinge on one of the mirrors of a high-finesse cavity. The quantum memory is constituted by a single atom within the optical resonator. Photon storage is realized by the controlled transfer of the photonic excitation into a metastable state of the atom and occurs via a Raman transition with a suitably tailored laser pulse, which drives the atom. Our study is supported by numerical simulations, in which we include the modes of the transmission line and we use the experimental parameters of existing experimental setups. It reproduces the results derived using input–output theory in the corresponding regimes and can be extended to compute dynamics where the input–output formalism cannot be straightforwardly applied. Our analysis determines the maximal storage efficiency, namely, the maximal probability to store the photon in a stable atomic excitation, in the presence of spontaneous decay and cavity parasitic losses. It further delivers the form of the laser pulse that achieves the maximal efficiency by partially compensating parasitic losses. We numerically assess the conditions under which storage based on adiabatic dynamics is preferable to non-adiabatic pulses. Moreover, we systematically determine the shortest photon pulse that can be efficiently stored as a function of the system parameters.
Project uulm
Q.com-Quantenoptik / Verbundprojekt: Quanten-Repeater-Plattform mit Methoden der Quantenoptik - Q.com-Quantenoptik -; Teilvorhaben: Theorie und Anwendung des Quantenrepeaters: Kontinuierliche Beschreibung, Quantenspeicher und Quantenkontrolle / BMBF / 16KIS0130
Subject headings
[GND]: Optischer Resonator[LCSH]: Photons
[Free subject headings]: quantum memory | single photon | single atom | three level system | optical cavity | storage efficiency
[DDC subject group]: DDC 530 / Physics
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Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-47282
Giannelli, Luigi et al. (2023): Optimal storage of a single photon by a single intra-cavity atom. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. http://dx.doi.org/10.18725/OPARU-47282
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