Abstract
We discuss both the spectrum and the dynamics of cavity QED in the presence of dissipation beyond the standard perturbative treatment of losses. Using the dynamical polaron ansatz and matrix-product state simulations, we discuss the case where both light-matter coupling and system-bath interaction are in the ultra-strong-coupling regime. We provide a critical for the onset of Rabi oscillations. Besides, we demonstrate that the qubit is dressed by the cavity and dissipation. Such a dressing governs the dynamics and, thus, it can be measured. Finally, we sketch an implementation for our theoretical ideas within circuit QED technology.
- Received 24 July 2018
DOI:https://doi.org/10.1103/PhysRevA.99.013807
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