February 24, 2006

Entanglement at High Temperature

Aires Ferreira, Ariel Guerreiro, and Vlatko Vedral have published interesting results on entanglement in Phys. Rev. Lett. 96 060407. I quote the authors:

" ... the entanglement between macroscopic mirror and a cavity mode field can arise due to radiation pressure at arbitrarily high temperatures as the system evolves in time. This is very surprising because it is commonly believed that high temperature completely destroys entanglement. We will study entanglement in the time domain using a discrete variable method and identify its dependence on the relevant physical parameters, such as the strength of the radiation pressure coupling and temperature."