We demonstrate the dispersive measurement of ferromagnetic resonance in a yttrium iron garnet sphere embedded within a microwave cavity. The reduction in the longitudinal magnetization at resonance is measured as a frequency shift in the cavity mode coupled to the sphere. This measurement is a result of the intrinsic nonlinearity in magnetization dynamics, indicating a promising route towards e...

Hybridizing collective spin excitations and a cavity with high cooperativity provides a new research subject in the field of cavity quantum electrodynamics and can also have potential applications to quantum information. Here we report an experimental study of cavity quantum electrodynamics with ferromagnetic magnons in a small yttrium-iron-garnet (YIG) sphere at both cryogenic and room tempera...

We develop a theoretical formalism to model the linear spectrum of a quantum dot embedded in a highquality cavity, in the presence of an arbitrary mechanism modifying the homogeneous spectrum of the quantum dot. Within the simple assumption of Lorentzian broadening, we show how the known predictions of cavity quantum electrodynamics are recovered. We then apply our model to the case where the q...

F. O. Prado, N. G. de Almeida, M. H. Y. Moussa and C. J. Villas-Bôas Universidade Federal de São Carlos, São Carlos, Brazil and Universidade Católica de Goiás, Goiânia, Brazil Abstract In this work we show how to engineer bilinear and quadratic Hamiltonians in cavity quantum electrodynamics (QED) through the interaction of a single driven two-level atom with cavity modes. The validity of the en...

Cavity quantum electrodynamics allows the study of strong coupling between excited atoms and a single mode of a resonant cavity. As a consequence of the strong coupling the cavity field and the atom are entangled. The system thus provides important ingredients necessary for studies of quantum information processing. In addition the periodic exchange of a photon between atom and cavity can be st...

We study the collective optical response of an atomic ensemble confined within a single-mode optical cavity by stochastic electrodynamics simulations that include the effects of atomic position correlations, internal level structure, and spatial variations in cavity coupling strength and atom density. In the limit of low light intensity, the simulations exactly reproduce the full quantum field-...