Squeezing the collective spin of a dilute atomic ensemble by cavity feedback

By M. Schleier-Smith, I. Leroux, V. Vuleti'c. 2009

146 citations recorded by the source corpus.

We propose and analyze a simple method to squeeze dynamically and unconditionally the collective spin of a dilute atomic ensemble by interaction with a driven mode of an optical resonator, as recently demonstrated [I. D. Leroux, M. H. Schleier-Smith, and V. Vuletic, Phys. Rev. Lett. 104, 073602 (2010)]. We show that substantial squeezing can be achieved in the regime of strong collective ensemble-resonator coupling. The squeezing is ultimately limited either by photon emission into free space or by the curvature of the Bloch sphere. We derive both limits and show where each prevails.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/ffab3e8a7ad61fab3d472816b8567f8c8120a97e

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Interaction between Atomic Ensembles and Optical Resonators: Classical Description (2011, background): “…it has become increasingly clear that features that were originally assigned a quantum mechanical origin, such as the vacuum Rabi splitting [24,97], can be in fact described within a classical framework, and arise simply from a combination of linear atomic absorption and dispersion [26,100].”
Quantum metrology with nonclassical states of atomic ensembles (2016, methodology): “We obtain the quadratic Hamiltonian ĤSM = α(â † +1â+1 + â † −1â−1) +β(â † −1â † +1 + â−1â+1), where α = q+λ(2N0− 1) and β = 2λN0, that can be diagonalized by a Bogoliubov transformation (Duan et al., 2000b; Pu and Meystre, 2000), see also Truax (1985).”
Quantum spin squeezing (2010, methodology): “(15), in photon system and has been implemented in BEC via atomic collisions [4, 17, 18, 19, 20] and in atomic ensembles [167, 107, 111, 22, 210, 209].”