Ultrastrong-coupling regime of nondipolar light-matter interactions
| Autor: | Alexandre Le Boité, Myung-Joong Hwang, Simone Felicetti |
|---|---|
| Přispěvatelé: | Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Coupling strength Scattering Direct observation FOS: Physical sciences Observable 01 natural sciences 010305 fluids & plasmas Resonator symbols.namesake [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Qubit Quantum electrodynamics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences symbols Quantum Physics (quant-ph) 010306 general physics Hamiltonian (quantum mechanics) Quantum ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Review A Physical Review A, American Physical Society 2018, 98 (5), ⟨10.1103/PhysRevA.98.053859⟩ |
| ISSN: | 2469-9926 2469-9934 |
| DOI: | 10.1103/PhysRevA.98.053859⟩ |
| Popis: | We present a circuit-QED scheme which allows to reach the ultrastrong coupling regime of a nondipolar interaction between a single qubit and a quantum resonator. We show that the system Hamiltonian is well approximated by a two-photon quantum Rabi model and propose a simple scattering experiment to probe its fundamental properties. In particular, we identify a driving scheme that reveals the change in selection rules characterizing the breakdown of the rotating-wave approximation and the transition from strong to ultrastrong two-photon interactions. Finally, we show that a frequency crowding in a narrow spectral region is observable in the output fluoresce spectrum as the coupling strength approaches the collapse point, paving the way to the direct observation of the onset of the spectral collapse in a solid-state device. Comment: 5+6 pages, 2 figures |
| Databáze: | OpenAIRE |
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