Abstract
Ultrastrong coupling between light and matter has, in the past decade, transitioned from a theoretical idea to an experimental reality. It is a new regime of quantum light–matter interaction, which goes beyond weak and strong coupling to make the coupling strength comparable to the transition frequencies in the system. The achievement of weak and strong coupling has led to increased control of quantum systems and to applications such as lasers, quantum sensing, and quantum information processing. Here we review the theory of quantum systems with ultrastrong coupling, discussing entangled ground states with virtual excitations, new avenues for nonlinear optics, and connections to several important physical…
Citation impact
485
total citations
- FWCI
- 66.40
- Percentile
- 100%
- References
- 232
Citations per year
Authors
5Topics & keywords
Topics
Keywords
- Optomechanics
- Physics
- Coupling (piping)
- Polariton
- Quantum technology
- Quantum
- Quantum computer
- Quantum information
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Funding
- JTJohn Templeton Foundation
- NINational Institute of Advanced Industrial Science and TechnologyAward: JPMJCR1676
- AOAsian Office of Aerospace Research and DevelopmentAward: FA2386-18-1-4045
- RFRussian Foundation for Basic ResearchAward: 17-52-50023
- MUMultidisciplinary University Research Initiative
- JSJapan Society for the Promotion of ScienceAwards: JPMJCR1676, P15750, CREST, RIKEN, 50023, 17-52-50023
- JSJapan Science and Technology AgencyAwards: CREST, JPMJCR1676
- RRIKENAward: JPMJCR1676
- CRCore Research for Evolutional Science and TechnologyAwards: JPMJCR, JPMJCR1676
- AFAir Force Office of Scientific ResearchAwards: FA9550-, FA9550_14_1_0040, FA2386, 17-52-50023, FA9550, FA2386-18-1-4045, FA9550-14-1-0040, FA9550-14-1-004
- ARArmy Research OfficeAwards: 73315PH, FA2386-18-1-4045