Quantum Electrodynamics with Infinitesimal Nonlinear Interactions

Quantum-information processing with circuit quantum electrodynamics

Alexandre Blais, Jay Gambetta, A. Wallraff, D. I. Schuster, S. M. Girvin, M. H. Devoret, and R. J. Schoelkopf Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut 06520, USA Département de Physique et Regroupement Québécois sur les Matériaux de Pointe, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 Department of Physics, ETH Zurich, CH-8093 Zürich, S...

Quantum channel construction with circuit quantum electrodynamics

Quantum channels can describe all transformations allowed by quantum mechanics. We adapt two existing works [S. Lloyd and L. Viola, Phys. Rev. A 65, 010101 (2001) and E. Andersson and D. K. L. Oi, ibid. 77, 052104 (2008)] to superconducting circuits, featuring a single qubit ancilla with quantum nondemolition readout and adaptive control. This construction is efficient in both ancilla dimension...

Cavity quantum electrodynamics with semiconductor quantum dots

Cavity quantum electrodynamics with semiconductor quantum dots Pascale Senellart CNRS, Laboratoire de Photonique et de Nanostructures, Marcoussis, France Many quantum devices can be implemented by controlling the spontaneous emission of a semiconductor quantum dots in a microcavity: bright sources of quantum light, delayed photon entangler, optical quantum gates... In this talk, I will present ...

Proposal for Experimental Studies of Nonlinear Quantum Electrodynamics

Massless and Massive Vector Goldstone Bosons in Nonlinear Quantum Electrodynamics

The spontaneous Lorentz invariance violation (SLIV) developing in QED type theories with the nonlinear four-vector field constraint A μ = M (where M is a proposed scale of the Lorentz violation) is considered in the case when the internal U(1) charge symmetry is also spontaneously broken. We show that such a SLIV pattern induces the genuine vector Goldstone boson which appears massless when the...