Optimal Spin Squeezed Steady State induced by the dynamics of non-hermitian hamiltonians

RAMÍREZ, R; REBOIRO, M

PHYSICA SCRIPTA - (Print)

IOP PUBLISHING LTD

Lugar: Londres; Año: 2019 vol. 94

0031-8949

In this work, we study the time evolution of a Coherent Spin State under the action of a Non-hermitianHamiltonian. The Hamiltonian is modeled by a one-axis twisting term plus a Lipkin-type interaction. We show that when the Lipkin interaction is switched on, depending on therelative values of the coupling constants, the initial state evolves into a Steady Spin SqueezedState which minimizes the Uncertainty Relations, intelligent spin state. We apply this result tolook for the generation of a steady intelligent spin state from an ensemble of nitrogen-vacancycolour centers in diamond coupled to a mechanical resonator.