Quantum optics seminar
Floquet engineering of spin-spin interactions in a hybrid atomic system
Mr. Dani Gavilan
Helmholtz Institute Mainz/JGU
Abstract
Zoom link: https://us02web.zoom.us/j/87804260494?pwd=aQITIeL97YNDWfnsKcyxjnVcLq8KzJ.1
Abstract:
Self-compensated comagnetometers, employing overlapping samples of spin-polarized alkali and noble gases (for example K-3He) are promising sensors for exotic beyond-the-standard-model fields and high-precision metrology such as rotation sensing. In the context of these experimental platforms, we demonstrate dynamical control of the effective spin-spin interaction between alakali metals and noble gas via parametric modulation. We show that the periodic modulation of the direction of the electron spin polarization with respect to the nuclear polarization leads to a Floquet induced renormalization of the spin-exchange coupling. This effect enables continuous tuning and suppression of the effective interaction strength without altering the intrinsic properties of the system. We develop a theoretical model that supports the experimental measurements. The results establish a general mechanism for controlling interaction strengths in hybrid atomic systems and provide new opportunities for precision measurements and quantum memories.
Abstract:
Self-compensated comagnetometers, employing overlapping samples of spin-polarized alkali and noble gases (for example K-3He) are promising sensors for exotic beyond-the-standard-model fields and high-precision metrology such as rotation sensing. In the context of these experimental platforms, we demonstrate dynamical control of the effective spin-spin interaction between alakali metals and noble gas via parametric modulation. We show that the periodic modulation of the direction of the electron spin polarization with respect to the nuclear polarization leads to a Floquet induced renormalization of the spin-exchange coupling. This effect enables continuous tuning and suppression of the effective interaction strength without altering the intrinsic properties of the system. We develop a theoretical model that supports the experimental measurements. The results establish a general mechanism for controlling interaction strengths in hybrid atomic systems and provide new opportunities for precision measurements and quantum memories.