Physics – Quantum Physics
Scientific paper
2003-02-02
Physics
Quantum Physics
13 pages, 6 figures, submitted to European Journal of Physics D
Scientific paper
The interaction of classical and quantized electromagnetic fields with an ensemble of atoms in an optical cavity is considered. Four fields drive a double-lambda level scheme in the atoms, consisting of a pair of lambda systems sharing the same set of lower levels. Two of the fields produce maximum coherence, rho12 = -1/2, between the ground state sublevels 1 and 2. This pumping scheme involves equal intensity fields that are resonant with both the one and two-photon transitions of the lambda system. There is no steady-state absorption of these fields, implying that the fields induce a type electromagnetically-induced transparency (EIT) in the medium. An additional pair of fields interacting with the second lambda system, combined with the EIT fields, leads to squeezing of the atom spin associated with the ground state sublevels. Our method involves a new mechanism for creating steady-state spin squeezing using an optical cavity. As the cooperativity parameter C is increased, the optimal squeezing varies as C^{-1/3}. For experimentally accessible values of C, squeezing as large as 90% can be achieved.
Berman Paul R.
Dantan Aurelien
Pinard Michel
No associations
LandOfFree
Atom spin squeezing in a double lambda system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Atom spin squeezing in a double lambda system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atom spin squeezing in a double lambda system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-164320