Artículo
Nonlinear effects on the dynamics of quantum harmonic modes coupled through angular momentum
Canosa, Norma Beatriz
; Rossignoli, Raúl Dante; Garcia, Javier
; Mandal, Swapan
; Chandra Saha, Kartick
Fecha de publicación:
11/2020
Editorial:
IOP Publishing
Revista:
Journal of Physics B: Atomic, Molecular and Optical Physics
ISSN:
0953-4075
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We investigate nonlinear effects on the dynamics of entanglement and other quantum observables in a system of two harmonic modes coupled through angular momentum. The nonlinearity arises from a Kerr-type anharmonic term in each mode. The emergence and evolution of entanglement, non-Gaussianity, photon number, photon antibunching and squeezing are examined for different initial coherent product states and couplings, through exact diagonalization in a truncated basis. It is shown that the anharmonic terms, even if weak, can lead to very significant effects for such initial states, considerably enhancing and stabilizing entanglement and leading to a non negligible non-Gaussianity of the evolved states. They also affect other observables, stabilizing the dynamics after an initial transient regime, for not too small initial average populations of each mode. Analytic short-time approximate expressions are also provided.
Palabras clave:
QUANTUM DYNAMICS
,
COUPLED MODES
,
QUANTUM ENTANGLEMENT
,
NON LINEAR EFFECTS
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Citación
Canosa, Norma Beatriz; Rossignoli, Raúl Dante; Garcia, Javier; Mandal, Swapan; Chandra Saha, Kartick; Nonlinear effects on the dynamics of quantum harmonic modes coupled through angular momentum; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 53; 215402; 11-2020; 1-10
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