Steady-state many-body entanglement of hot reactive fermions

TitleSteady-state many-body entanglement of hot reactive fermions
Publication TypeJournal Article
Year of Publication2012
AuthorsFoss-Feig, M, Daley, AJ, Thompson, JK, Rey, AMaria
JournalPhysical Review Letters
Date Published2012/12/4

Entanglement is typically created via systematic intervention in the time
evolution of an initially unentangled state, which can be achieved by coherent
control, carefully tailored non-demolition measurements, or dissipation in the
presence of properly engineered reservoirs. In this paper we show that
two-component Fermi gases at ~\mu K temperatures naturally evolve, in the
presence of reactive two-body collisions, into states with highly entangled
(Dicke-type) spin wavefunctions. The entanglement is a steady-state property
that emerges---without any intervention---from uncorrelated initial states, and
could be used to improve the accuracy of spectroscopy in experiments with
fermionic alkaline earth atoms or fermionic groundstate molecules.

Short TitlePhys. Rev. Lett.