Dynamical generation of spin squeezing in ultra-cold dipolar molecules
- URL: http://arxiv.org/abs/2011.08202v2
- Date: Sun, 13 Feb 2022 18:06:29 GMT
- Title: Dynamical generation of spin squeezing in ultra-cold dipolar molecules
- Authors: Thomas Bilitewski, Luigi De Marco, Jun-Ru Li, Kyle Matsuda, William G.
Tobias, Giacomo Valtolina, Jun Ye, Ana Maria Rey
- Abstract summary: We study a bulk fermionic dipolar molecular gas in the quantum degenerate regime confined in a two-dimensional geometry.
We derive a long-range interacting XXZ model describing the many-body spin dynamics of the molecules valid in the regime where motional degrees of freedom are frozen.
- Score: 2.6950517214073693
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study a bulk fermionic dipolar molecular gas in the quantum degenerate
regime confined in a two-dimensional geometry. We consider two rotational
states that encode a spin 1/2 degree of freedom. We derive a long-range
interacting XXZ model describing the many-body spin dynamics of the molecules
valid in the regime where motional degrees of freedom are frozen. Due to the
spatially extended nature of the harmonic oscillator modes, the interactions in
the spin model are very long-ranged and the system behaves close to the
collective limit, resulting in robust dynamics and generation of entanglement
in the form of spin squeezing even at finite temperature and in presence of
dephasing and chemical reactions. We demonstrate how the internal state
structure can be exploited to realise time-reversal and enhanced metrological
sensing protocols.
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