Phase slippage and self-trapping in a self-induced bosonic Josephson junction

A dipolar condensate confined in a toroidal trap constitutes a self-induced Josephson junction when the dipoles are oriented perpendicularly to the trap symmetry axis and the s-wave scattering length is small enough. The ring-shaped double-well potential coming from the anisotropic character of the...

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Autor principal:	Jezek, Dora Marta
Publicado:	2011
Materias:	Antivortex Dipolar interaction Double-well potential Initial population Josephson junctions Mean-field Particle fluxes Phase slips S-wave scattering lengths Self-trapping Toroidal trap Trap symmetries Vortex dynamics Josephson junction devices Population statistics Quantum optics Vortex flow
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v84_n3_p_Abad http://hdl.handle.net/20.500.12110/paper_10502947_v84_n3_p_Abad
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_10502947_v84_n3_p_Abad
record_format	dspace
spelling	paper:paper_10502947_v84_n3_p_Abad2023-06-08T16:02:40Z Phase slippage and self-trapping in a self-induced bosonic Josephson junction Jezek, Dora Marta Antivortex Dipolar interaction Double-well potential Initial population Josephson junctions Mean-field Particle fluxes Phase slips S-wave scattering lengths Self-trapping Toroidal trap Trap symmetries Vortex dynamics Josephson junction devices Population statistics Quantum optics Vortex flow A dipolar condensate confined in a toroidal trap constitutes a self-induced Josephson junction when the dipoles are oriented perpendicularly to the trap symmetry axis and the s-wave scattering length is small enough. The ring-shaped double-well potential coming from the anisotropic character of the mean-field dipolar interaction is robust enough to sustain self-trapping dynamics, which takes place when the initial population imbalance between the two wells is large. We show that, in this system, the self-trapping regime is directly related to a vortex-induced phase-slip dynamics. A vortex and antivortex are spontaneously nucleated in the low-density regions before a minimum of the population imbalance is reached and then cross the toroidal section in opposite directions through the junctions. This vortex dynamics yields a phase slip between the two weakly linked condensates causing an inversion of the particle flux. © 2011 American Physical Society. Fil:Jezek, D.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v84_n3_p_Abad http://hdl.handle.net/20.500.12110/paper_10502947_v84_n3_p_Abad
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Antivortex Dipolar interaction Double-well potential Initial population Josephson junctions Mean-field Particle fluxes Phase slips S-wave scattering lengths Self-trapping Toroidal trap Trap symmetries Vortex dynamics Josephson junction devices Population statistics Quantum optics Vortex flow
spellingShingle	Antivortex Dipolar interaction Double-well potential Initial population Josephson junctions Mean-field Particle fluxes Phase slips S-wave scattering lengths Self-trapping Toroidal trap Trap symmetries Vortex dynamics Josephson junction devices Population statistics Quantum optics Vortex flow Jezek, Dora Marta Phase slippage and self-trapping in a self-induced bosonic Josephson junction
topic_facet	Antivortex Dipolar interaction Double-well potential Initial population Josephson junctions Mean-field Particle fluxes Phase slips S-wave scattering lengths Self-trapping Toroidal trap Trap symmetries Vortex dynamics Josephson junction devices Population statistics Quantum optics Vortex flow
description	A dipolar condensate confined in a toroidal trap constitutes a self-induced Josephson junction when the dipoles are oriented perpendicularly to the trap symmetry axis and the s-wave scattering length is small enough. The ring-shaped double-well potential coming from the anisotropic character of the mean-field dipolar interaction is robust enough to sustain self-trapping dynamics, which takes place when the initial population imbalance between the two wells is large. We show that, in this system, the self-trapping regime is directly related to a vortex-induced phase-slip dynamics. A vortex and antivortex are spontaneously nucleated in the low-density regions before a minimum of the population imbalance is reached and then cross the toroidal section in opposite directions through the junctions. This vortex dynamics yields a phase slip between the two weakly linked condensates causing an inversion of the particle flux. © 2011 American Physical Society.
author	Jezek, Dora Marta
author_facet	Jezek, Dora Marta
author_sort	Jezek, Dora Marta
title	Phase slippage and self-trapping in a self-induced bosonic Josephson junction
title_short	Phase slippage and self-trapping in a self-induced bosonic Josephson junction
title_full	Phase slippage and self-trapping in a self-induced bosonic Josephson junction
title_fullStr	Phase slippage and self-trapping in a self-induced bosonic Josephson junction
title_full_unstemmed	Phase slippage and self-trapping in a self-induced bosonic Josephson junction
title_sort	phase slippage and self-trapping in a self-induced bosonic josephson junction
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v84_n3_p_Abad http://hdl.handle.net/20.500.12110/paper_10502947_v84_n3_p_Abad
work_keys_str_mv	AT jezekdoramarta phaseslippageandselftrappinginaselfinducedbosonicjosephsonjunction
_version_	1768546733068910592

Phase slippage and self-trapping in a self-induced bosonic Josephson junction

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