ar X iv : 1 00 3 . 04 24 v 2 [ qu an t - ph ] 5 J ul 2 01 0 Cold - atom induced control of an opto - mechanical device

ar X iv : 0 80 5 . 04 23 v 1 [ qu an t - ph ] 4 M ay 2 00 8 Tripartite entanglement dynamics for atom in a two - mode nonlinear cavity

We study Hamiltonian dynamics of a single two-level atom interacting with two modes in a single cavity, which can also include an optical Kerr nonlinearity. Our model is quite general and is solved analytically and studied numerically, and the model reduces to several well known systems by setting certain parameters in the Hamiltonian to zero. We calculate and discuss entanglement between the t...

ar X iv : 0 70 7 . 01 49 v 1 [ qu an t - ph ] 2 J ul 2 00 7 Experimental demonstration of continuous variable purification of squeezed states

We report on the first experimental demonstration of purification of nonclassical continous variable states. The protocol uses two copies of phase-diffused states overlapped on a beam splitter and provides Gaussified, less mixed states with the degree of squeezing improved. The protocol uses only linear optical devices such as beam splitters and homodyne detection, thereby proving these optical...

ar X iv : 0 80 3 . 12 19 v 1 [ qu an t - ph ] 8 M ar 2 00 8 Optical squeezing of a mechanical oscillator by dispersive interaction

We consider a small partially reflecting vibrating mirror coupled dispersively to a single optical mode of a high finesse cavity. We show this arrangement can be used to implement quantum squeezing of the mechanically oscillating mirror.

ar X iv : c on d - m at / 0 01 23 98 v 2 2 0 M ar 2 00 1 Optics with an Atom Laser Beam

We report on the atom optical manipulation of an atom laser beam. Reflection, focusing and its storage in a resonator are demonstrated. Precise and versatile mechanical control over an atom laser beam propagating in an inhomogeneous magnetic field is achieved by optically inducing spin-flips between atomic ground states with different magnetic moment. The magnetic force acting on the atoms can ...

ar X iv : 0 80 8 . 10 23 v 1 [ qu an t - ph ] 7 A ug 2 00 8 CATEGORICAL QUANTUM MECHANICS