Spin squeezing and many-body dipolar dynamics in optical lattice clocks

Author
Abstract
The recent experimental realization of a three-dimensional (3D) optical lattice clock not only reduces the influence of collisional interactions on the clock's accuracy but also provides a promising platform for studying dipolar many-body quantum physics. Here, by solving the governing master equation, we investigate the role of both elastic and dissipative long-range interactions in the clock's dynamics and study its dependence on lattice spacing, dimensionality, and dipolar orientation. For small lattice spacing, i.e.,\&nbsp;k<sub>0</sub>a<<1, where\&nbsp;a\&nbsp;is the lattice constant and\&nbsp;k<sub>0</sub>\&nbsp;is the transition wave number, a sizable spin squeezing appears in the transient state which is favored in a head-to-tail dipolar configuration in 1D systems and a side-by-side configuration in 2D systems, respectively. For large lattice spacing, i.e., k<sub>0</sub>a>>1, the single atomic decay rate can be effectively suppressed due to the destructive dissipative emission of neighboring atoms in both 1D and 2D. Our results will not only aid in the design of the future generation of ultraprecise atomic clocks but also illuminates the rich many-body physics exhibited by radiating dipolar system.
Year of Publication
2019
Journal
Physical Review A
Volume
100
Date Published
2019-10
ISSN Number
2469-9926
URL
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.100.041602
DOI
10.1103/PhysRevA.100.041602
JILA PI
Associated Institutes
Journal Article