Artículo
Photon generation and entanglement in a double superconducting cavity
Velasco, Cruz Ignacio; del Grosso, Nicolas Francisco
; Lombardo, Fernando Cesar
; Soba, Alejandro
; Villar, Paula Ines
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Fecha de publicación:
10/2022
Editorial:
American Physical Society
Revista:
Physical Review A: Atomic, Molecular and Optical Physics
ISSN:
1050-2947
e-ISSN:
2469-9934
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study the dynamical Casimir effect in a double superconducting cavity in a circuit quantum electrodynamics architecture. Parameters in the quantum circuit are chosen in such a way the superconducting cavity can mimic a double cavity, formed by two perfectly conducting outer walls and a dielectric wall, with arbitrary permittivity separating both halves. We undertake a spectral analysis of the cavity, showing that the spectrum varies significantly depending on the values of the susceptibility of the dielectric mirror and the relative lengths of both cavities. We study the creation of photons when the walls oscillate harmonically with a small amplitude. Furthermore, we explore the possibility of entangling two uncoupled cavities, starting from a symmetric double cavity and having both of its halves become uncoupled at a later given instant. We consider both cases: (i) when the field is initially in a vacuum state and (ii) the situation in which photon creation via the dynamical Casimir effect has already taken place. We show that the cavities become entangled in both cases but, in the latter, the quantum correlation between individual modes can be greatly increased at the cost of diminishing the entanglement between most pairs of modes.
Palabras clave:
photon generation
,
squid
,
numerical model
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Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Velasco, Cruz Ignacio; del Grosso, Nicolas Francisco; Lombardo, Fernando Cesar; Soba, Alejandro; Villar, Paula Ines; Photon generation and entanglement in a double superconducting cavity; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 106; 4; 10-2022; 1-16
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