Entanglement of a photon and an optical lattice spin wave.
We propose and implement a scheme to produce long-lived entanglement between a signal field and a magnetically insensitive collective excitation in an atomic cloud cooled in a one-dimensional optical lattice. After a programmable storage time, we convert the spin-wave excitation into an idler field, and demonstrate violation of Bell's inequality for storage times in excess of 3 ms.
Dudin
Y O
YO
School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.
Jenkins
S D
SD
Zhao
R
R
Matsukevich
D N
DN
Kuzmich
A
A
Kennedy
T A B
TA