Description

2012/12/10, Dr. Zoltan Kurucz (Wigner Research Cetre for Physics, Budapest)

Place: Seminar Room of Theoretical Physics Department
Time: 12h
Title: Spin squeezing of multilevel atoms
 
 
Abstract

We show that an ensemble of identical d-level atoms can be efficiently described by d-1 collective oscillator degrees of freedom in the vicinity of a product state. We apply our description to two kinds of spin squeezing having essentially different entanglement properties: (i) hen each spin-F atom is individually squeezed and (ii) when a particular collective atomic oscillator mode is squeezed. When combined in sequence, the order of the two methods is relevant in the final degree of squeezing.

 [1] Z. Kurucz and K. Mølmer, Phys. Rev. A 81, 032314 (2010).