2019
DOI: 10.1103/revmodphys.91.025005
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Ultrastrong coupling regimes of light-matter interaction

Abstract: superconducting circuits, semiconductor quantum wells, and other hybrid quantum systems. Finally, anticipated applications are highlighted utilizing USC and DSC regimes, including novel quantum optical phenomena, quantum simulation, and quantum computation. CONTENTSCaltech Caltech Caltech LKB Paris LKB Paris LKB Paris LKB Paris LKB Paris Harvard Harvard Würzburg U Tokyo ETH U Tokyo Stanford Princeton (MW) ETH (MW) Yale Delft, NTT IMS WMI, Delft WMI NICT ETH ETH UPD ISSP UPD UPD U Reg IMS U Tokyo CNRS CNRS NCU … Show more

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Cited by 938 publications
(856 citation statements)
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References 313 publications
(533 reference statements)
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“…The rotating wave approximation is valid only when gω1,ω2. If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes …”
Section: Cavitiesmentioning
confidence: 99%
See 1 more Smart Citation
“…The rotating wave approximation is valid only when gω1,ω2. If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes …”
Section: Cavitiesmentioning
confidence: 99%
“…If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes. [60,61] While the above discussion is framed in terms of photons in electromagnetic cavities, any other oscillating system that admits second quantization can be treated in the same way. In particular, mechanical vibrations in high Q membranes and beams can be described in terms of phonons, and excitations of magnetostatic modes as magnons.…”
Section: Weak and Strong Couplingmentioning
confidence: 99%
“…Rabi interaction (RI), the direct coupling in the Rabi model between the quadrature variable of a quantized field and an atomic polarization in ultrastrong coupling regime [41][42][43], is naturally present at low frequencies in mechanical and microwave systems [44][45][46][47][48][49][50][51][52][53][54][55]. Recently, a sequence of RIs between a qubit and an oscillator has been proposed to induce the deterministic Kerr, cubic or arbitrary-order nonlinear phase gates [56,57].…”
Section: Introductionmentioning
confidence: 99%
“…In the past decade, a new subfield focused on the so-called ultrastrong coupling regime where the atom-cavity coupling constant is comparable to a fraction of the bare atomic and cavity frequencies and the rotating wave approximation is no longer valid has emerged. [58,59,60,61,62]. The emergence of new systems with with stronger coupling between two level systems and cavity modes warrants detailed modeling of the dynamics of cavity QED systems.…”
Section: Introductionmentioning
confidence: 99%