|Other Titles:||Ultrastrong light–matter interaction in condensed matter photophysics|
|Authors:||馬場, 基彰 https://orcid.org/0000-0001-9811-0416 (unconfirmed)|
|Author's alias:||BAMBA, Motoaki|
|Abstract:||The electromagnetic wave and polarization in matters exchange their amplitude with each other during the propagation with temporal and spatial oscillation. In the development of the condensed matter photophysics, in most cases, we have usually assumed that the rate of the amplitude exchange is low enough compared with the oscillation frequencies of the electromagnetic wave and polarization, i.e., the rotating-wave approximation has been usually justified. However, from around 2009, a variety of materials showing the so-called ultrastrong light–matter interaction, where the rate of the amplitude exchange is comparable to or higher than the frequencies of the electromagnetic wave and polarization even in the weak intensity limit, have been reported. We review two unique physics in the ultrastrong regime, the so-called virtual photons and superradiant phase transitions, from the viewpoint of solid state photophysics.|
|Appears in Collections:||Journal Articles|
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