Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

Chaotic spin dynamics of spin-1 Bose-Einstein condensates with broken conservation of magnetization

Poster 98

Presenter: Liam Crafton (Washington State University)

Author: Qingze Guan (Washington State University)

Spinor Bose-Einstein condensates (BECs) are highly tunable quantum systems and have the potential to generate useful entanglements for enhanced sensing. The spin dynamics of spin-1 BECs have been analytically solved by mapping to a non-rigid pendulum, under the mean-field and single-mode approximations. This study introduces a transverse coupling that breaks integrability by causing magnetization to no longer be conserved. Increasing the coupling strength is expected to cause a transition from regular to chaotic dynamics, which may be identified with a variety of analyses, including of the energy level statistics or out-of-time order correlators. Ground state phase transitions and dynamical phase transitions have been identified by divergence in the quantum Fisher information, which is connected to measurement sensitivity by the Cramer-Rao bound. We seek to characterize the parameters that lead to chaotic spin dynamics and to determine if such a system supports measurement sensitivity beyond the standard quantum limit in the chaotic regime.

Funding acknowledgement

Support from the fund of Claire & William Band Distinguished Professorship in Physics at Washington State University is highly acknowledged.

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