74 citations · 119 across the 4 of their papers we have counts for
4 papers
Conditional squeezing induced by a two-level system: arbitrary-time Magnus coefficients in the quantum Rabi model
Phoenix M. M. Paing, Daniel F. V. James
We present a systematic Magnus expansion treatment of the quantum Rabi model beyond the Rotating Wave Approximation. We show that at the second order of Magnus series, the second-o…
Conditions for Time-Independence of N-level Systems under the Rotating Wave Approximation (RWA) and Dipole Selection Rules
Phoenix M. M. Paing, Daniel F. V. James
We analyze the time-dependence of N-level systems under the Rotating Wave Approximation and dipole selection rules. Such systems can be solved straightforwardly if the Hamiltonian…
Theory of Cross Phase Modulation for the Vibrational Modes of Trapped Ions
X. Rebecca Nie, Christian F. Roos, Daniel F. V. James
We analyze nonlinear coupling between individual vibrational quanta for trapped ions. The nonlinear Coulomb interaction causes a Kerr-type Hamiltonian, for which we derive an analy…
Nonlinear coupling of continuous variables at the single quantum level
C. F. Roos, T. Monz, K. Kim +4
We experimentally investigate nonlinear couplings between vibrational modes of strings of cold ions stored in linear ion traps. The nonlinearity is caused by the ions' Coulomb inte…