Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 589-592 |
| Seitenumfang | 4 |
| Fachzeitschrift | NATURE |
| Jahrgang | 559 |
| Ausgabenummer | 7715 |
| Publikationsstatus | Veröffentlicht - 26 Juli 2018 |
| Extern publiziert | Ja |
Abstract
The decay of an excited atom undergoing spontaneous photon emission into the fluctuating quantum-electrodynamic vacuum is an emblematic example of the dynamics of an open quantum system. Recent experiments have demonstrated that the gapped photon dispersion in periodic structures, which prevents photons in certain frequency ranges from propagating, can give rise to unusual spontaneous-decay behaviour, including the formation of dissipative bound states1–3. So far, these effects have been restricted to the optical domain. Here we demonstrate similar behaviour in a system of artificial emitters, realized using ultracold atoms in an optical lattice, which decay by emitting matter-wave, rather than optical, radiation into free space. By controlling vacuum coupling and the excitation energy, we directly observe exponential and partly reversible non-Markovian dynamics and detect a tunable bound state that contains evanescent matter waves. Our system provides a flexible platform for simulating open-system quantum electrodynamics and for studying dissipative many-body physics with ultracold atoms4–6.
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in: NATURE, Jahrgang 559, Nr. 7715, 26.07.2018, S. 589-592.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Spontaneous emission of matter waves from a tunable open quantum system
AU - Krinner, Ludwig
AU - Stewart, Michael
AU - Pazmiño, Arturo
AU - Kwon, Joonhyuk
AU - Schneble, Dominik
N1 - Funding Information: Acknowledgements We thank M. G. Cohen for discussions and a critical reading of the manuscript. This work was supported by NSF PHY-1607633. M.S. was supported by a GAANN fellowship by the US Department of Education. A.P. acknowledges partial support from ESPOL-SENESCYT.
PY - 2018/7/26
Y1 - 2018/7/26
N2 - The decay of an excited atom undergoing spontaneous photon emission into the fluctuating quantum-electrodynamic vacuum is an emblematic example of the dynamics of an open quantum system. Recent experiments have demonstrated that the gapped photon dispersion in periodic structures, which prevents photons in certain frequency ranges from propagating, can give rise to unusual spontaneous-decay behaviour, including the formation of dissipative bound states1–3. So far, these effects have been restricted to the optical domain. Here we demonstrate similar behaviour in a system of artificial emitters, realized using ultracold atoms in an optical lattice, which decay by emitting matter-wave, rather than optical, radiation into free space. By controlling vacuum coupling and the excitation energy, we directly observe exponential and partly reversible non-Markovian dynamics and detect a tunable bound state that contains evanescent matter waves. Our system provides a flexible platform for simulating open-system quantum electrodynamics and for studying dissipative many-body physics with ultracold atoms4–6.
AB - The decay of an excited atom undergoing spontaneous photon emission into the fluctuating quantum-electrodynamic vacuum is an emblematic example of the dynamics of an open quantum system. Recent experiments have demonstrated that the gapped photon dispersion in periodic structures, which prevents photons in certain frequency ranges from propagating, can give rise to unusual spontaneous-decay behaviour, including the formation of dissipative bound states1–3. So far, these effects have been restricted to the optical domain. Here we demonstrate similar behaviour in a system of artificial emitters, realized using ultracold atoms in an optical lattice, which decay by emitting matter-wave, rather than optical, radiation into free space. By controlling vacuum coupling and the excitation energy, we directly observe exponential and partly reversible non-Markovian dynamics and detect a tunable bound state that contains evanescent matter waves. Our system provides a flexible platform for simulating open-system quantum electrodynamics and for studying dissipative many-body physics with ultracold atoms4–6.
UR - http://www.scopus.com/inward/record.url?scp=85050700819&partnerID=8YFLogxK
U2 - 10.1038/s41586-018-0348-z
DO - 10.1038/s41586-018-0348-z
M3 - Article
C2 - 30046077
AN - SCOPUS:85050700819
VL - 559
SP - 589
EP - 592
JO - NATURE
JF - NATURE
SN - 0028-0836
IS - 7715
ER -