Show simple item record

dc.contributor.authorLi, Xinwei
Bamba, Motoaki
Zhang, Qi
Fallahi, Saeed
Gardner, Geoff C.
Gao, Weilu
Lou, Minhan
Yoshioka, Katsumasa
Manfra, Michael J.
Kono, Junichiro
dc.date.accessioned 2018-06-29T16:54:54Z
dc.date.available 2018-06-29T16:54:54Z
dc.date.issued 2018
dc.identifier.citation Li, Xinwei, Bamba, Motoaki, Zhang, Qi, et al.. "Vacuum Bloch–Siegert shift in Landau polaritons with ultra-high cooperativity." Nature Photonics, 12, (2018) Springer Nature: 324-329. https://doi.org/10.1038/s41566-018-0153-0.
dc.identifier.urihttps://hdl.handle.net/1911/102318
dc.description.abstract A two-level system resonantly interacting with an a.c. magnetic or electric field constitutes the physical basis of diverse phenomena and technologies. However, Schrödinger’s equation for this seemingly simple system can be solved exactly only under the rotating-wave approximation, which neglects the counter-rotating field component. When the a.c. field is sufficiently strong, this approximation fails, leading to a resonance-frequency shift known as the Bloch–Siegert shift. Here, we report the vacuum Bloch–Siegert shift, which is induced by the ultra-strong coupling of matter with the counter-rotating component of the vacuum fluctuation field in a cavity. Specifically, an ultra-high-mobility two-dimensional electron gas inside a high-Qterahertz cavity in a quantizing magnetic field revealed ultra-narrow Landau polaritons, which exhibited a vacuum Bloch–Siegert shift up to 40 GHz. This shift, clearly distinguishable from the photon-field self-interaction effect, represents a unique manifestation of a strong-field phenomenon without a strong field.
dc.language.iso eng
dc.publisher Springer Nature
dc.rights This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Macmillan Publishers Limited, part of Springer Nature.
dc.title Vacuum Bloch–Siegert shift in Landau polaritons with ultra-high cooperativity
dc.type Journal article
dc.citation.journalTitle Nature Photonics
dc.citation.volumeNumber 12
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1038/s41566-018-0153-0
dc.type.publication post-print
dc.citation.firstpage 324
dc.citation.lastpage 329


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record