Schach, Patrik ; Giese, Enno (2024)
A unified theory of tunneling times promoted by Ramsey clocks.
In: Science Advances, 10 (16)
doi: 10.1126/sciadv.adl6078
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
What time does a clock tell after quantum tunneling? Predictions and indirect measurements range from superluminal or instantaneous tunneling to finite durations, depending on the specific experiment and the precise definition of the elapsed time. Proposals and implementations use the atomic motion to define this delay, although the inherent quantum nature of atoms implies a delocalization and is in sharp contrast to classical trajectories. Here, we rely on an operational approach: We prepare atoms in a coherent superposition of internal states and study the time read-off via a Ramsey sequence after the tunneling process without the notion of classical trajectories or velocities. Our operational framework (i) unifies definitions of tunneling delay within one approach, (ii) connects the time to a frequency standard given by a conventional atomic clock that can be boosted by differential light shifts, and (iii) highlights that there exists no superluminal or instantaneous tunneling.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Schach, Patrik ; Giese, Enno |
| Art des Eintrags: | Bibliographie |
| Titel: | A unified theory of tunneling times promoted by Ramsey clocks |
| Sprache: | Englisch |
| Publikationsjahr: | 17 April 2024 |
| Verlag: | American Association for the Advancement of Science |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Science Advances |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| (Heft-)Nummer: | 16 |
| Kollation: | 8 Seiten |
| DOI: | 10.1126/sciadv.adl6078 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | What time does a clock tell after quantum tunneling? Predictions and indirect measurements range from superluminal or instantaneous tunneling to finite durations, depending on the specific experiment and the precise definition of the elapsed time. Proposals and implementations use the atomic motion to define this delay, although the inherent quantum nature of atoms implies a delocalization and is in sharp contrast to classical trajectories. Here, we rely on an operational approach: We prepare atoms in a coherent superposition of internal states and study the time read-off via a Ramsey sequence after the tunneling process without the notion of classical trajectories or velocities. Our operational framework (i) unifies definitions of tunneling delay within one approach, (ii) connects the time to a frequency standard given by a conventional atomic clock that can be boosted by differential light shifts, and (iii) highlights that there exists no superluminal or instantaneous tunneling. |
| Zusätzliche Informationen: | Erstveröffentlichung |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Angewandte Physik 05 Fachbereich Physik > Institut für Angewandte Physik > Theorie kalter Quantengase, Quantenoptik, Technische Optik 05 Fachbereich Physik > Institut für Angewandte Physik > Theoretische Quantenoptik |
| Hinterlegungsdatum: | 23 Apr 2024 09:59 |
| Letzte Änderung: | 12 Aug 2024 12:22 |
| PPN: | 520593758 |
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| Suche nach Titel in: | TUfind oder in Google |
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A unified theory of tunneling times promoted by Ramsey clocks. (deposited 05 Aug 2024 09:41)
- A unified theory of tunneling times promoted by Ramsey clocks. (deposited 23 Apr 2024 09:59) [Gegenwärtig angezeigt]
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