Entanglement degradation of cavity modes due to the dynamical Casimir effect

NICOLÁS F. DEL GROSSO; FERNANDO C LOMBARDO; PAULA I. VILLAR

PHYSICAL REVIEW D - PARTICLE AND FILDS

American Physical Society

Lugar: New York; Año: 2020 vol. 102 p. 1250081 - 12500814

0556-2821

We study the entanglement dynamics between two cavities when one of them is harmonically shakenin the context of quantum information theory. We find four different regimes depending on the fre-quency of the motion and the spectrum of the moving cavity. If the moving cavity is three dimen-sional only two modes inside get coupled and the entanglement can either degrade asymptoticallywith time or oscillate depending on the driving. On the other hand, if the cavity has an equidistantspectrum the entanglement can either vanish asymptotically if it is driven with its fundamentalfrequency or have a sudden death if it is driven with an uneven harmonic frequency.