Superconducting qubit–oscillator circuit beyond the ultrastrong-coupling regime

Integrability of the Rabi Model

(2011) D. Braak   PHYSICAL REVIEW LETTERS

Superradiant Phase Transitions and the Standard Description of Circuit QED

(2011) Oliver Viehmann et al.   PHYSICAL REVIEW LETTERS

Circuit quantum electrodynamics in the ultrastrong-coupling regime

(2010) T. Niemczyk et al.   Nature Physics

Qubit-oscillator systems in the ultrastrong-coupling regime and their potential for preparing nonclassical states

(2010) S. Ashhab et al.   PHYSICAL REVIEW A

Deep Strong Coupling Regime of the Jaynes-Cummings Model

(2010) J. Casanova et al.   PHYSICAL REVIEW LETTERS

Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime

(2010) P. Forn-Díaz et al.   PHYSICAL REVIEW LETTERS

No-go theorem for superradiant quantum phase transitions in cavity QED and counter-example in circuit QED

(2010) Pierre Nataf et al.   Nature Communications

Superconducting quantum bits

(2008) John Clarke et al.   NATURE