Nuclear Spin Dynamics, Noise, Squeezing, and Entanglement in Box Model.

Autor: Shumilin AV; Ioffe Institute, 194021 St. Petersburg, Russia., Smirnov DS; Ioffe Institute, 194021 St. Petersburg, Russia.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2021 May 28; Vol. 126 (21), pp. 216804.
DOI: 10.1103/PhysRevLett.126.216804
Abstrakt: We obtain a compact analytical solution for the nonlinear equation for the nuclear spin dynamics in the central spin box model in the limit of many nuclear spins. The total nuclear spin component along the external magnetic field is conserved and the two perpendicular components precess or oscillate depending on the electron spin polarization, with the frequency, determined by the nuclear spin polarization. As applications of our solution, we calculate the nuclear spin noise spectrum and describe the effects of nuclear spin squeezing and many body entanglement in the absence of a system excitation.
Databáze: MEDLINE