Geometric phase induced by a cyclically evolving squeezed vacuum reservoir.
Phys Rev Lett 96:15 (2006) 150403
Abstract:
We propose a new way to generate an observable geometric phase by means of a completely incoherent phenomenon. We show how to imprint a geometric phase to a system by adiabatically manipulating the environment with which it interacts. As a specific scheme, we analyze a multilevel atom interacting with a broadband squeezed vacuum bosonic bath. As the squeezing parameters are smoothly changed in time along a closed loop, the ground state of the system acquires a geometric phase. We also propose a scheme to measure such a geometric phase by means of a suitable polarization detection.How to extract entanglement from a piece of solid or a bunch of neutrons
The European Physical Journal A Springer Nature 26:3-4 (2006) 261-268
Macroscopic thermal entanglement due to radiation pressure.
Phys Rev Lett 96:6 (2006) 060407
Abstract:
Can entanglement and the quantum behavior in physical systems survive at arbitrary high temperatures? In this Letter we show that this is the case for a electromagnetic field mode in an optical cavity with a movable mirror in a thermal state. We also identify two different dynamical regimes of generation of entanglement separated by a critical coupling strength.A better than perfect match.
Nature 439:7075 (2006) 397