Stobinska, M. ; Alber, Gernot ; Leuchs, G. (2009)
Perfect excitation of a matter qubit by a single photon in free space.
In: EPL (Europhysics Letters), 86 (1)
doi: 10.1209/0295-5075/86/14007
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We propose a scheme for perfect excitation of a single two-level atom by a single photon in free space. The photon state has to match the time reversed photon state originating from spontaneous decay of a two-level system. Here, we discuss its experimental preparation. The state is characterized by a particular asymmetric exponentially shaped temporal profile. Any deviations from this ideal state limit the maximum absorption. Although perfect excitation requires an infinite amount of time, we demonstrate that there is a class of initial one-photon quantum states which can achieve almost perfect absorption even for a finite interaction time. Our results pave the way for realizing perfect coupling between flying and stationary qubits in free space thus opening a possibility for building scalable quantum networks.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Stobinska, M. ; Alber, Gernot ; Leuchs, G. |
| Art des Eintrags: | Bibliographie |
| Titel: | Perfect excitation of a matter qubit by a single photon in free space |
| Sprache: | Englisch |
| Publikationsjahr: | 22 April 2009 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | EPL (Europhysics Letters) |
| Jahrgang/Volume einer Zeitschrift: | 86 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1209/0295-5075/86/14007 |
| URL / URN: | https://iopscience.iop.org/article/10.1209/0295-5075/86/1400... |
| Kurzbeschreibung (Abstract): | We propose a scheme for perfect excitation of a single two-level atom by a single photon in free space. The photon state has to match the time reversed photon state originating from spontaneous decay of a two-level system. Here, we discuss its experimental preparation. The state is characterized by a particular asymmetric exponentially shaped temporal profile. Any deviations from this ideal state limit the maximum absorption. Although perfect excitation requires an infinite amount of time, we demonstrate that there is a class of initial one-photon quantum states which can achieve almost perfect absorption even for a finite interaction time. Our results pave the way for realizing perfect coupling between flying and stationary qubits in free space thus opening a possibility for building scalable quantum networks. |
| Zusätzliche Informationen: | Art.No.: 14007 |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Angewandte Physik 05 Fachbereich Physik > Institut für Angewandte Physik > Theoretische Quantenphysik |
| Hinterlegungsdatum: | 07 Jul 2021 07:03 |
| Letzte Änderung: | 10 Mai 2022 07:31 |
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