Quasiparticle inducing josephson effect in a Bose-Einstein condensate

S. Tsuchiya, Y. Ohashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigate tunneling properties of Bogoliubov phonons in a Bose-Einstein condensate. We find that the quasiparticle current of Bogoliubov phonon is remarkably enhanced near the potential barrier at low energies. This leads to the increase of the transmission probability in the low energy region. We show that the quasiparticle current twists the relative phase of the condensate wavefunctions and induces a Josephson supercurrent through the barrier. The Josephson critical current is estimated by calculating the induced supercurrent and phase difference.

Original languageEnglish
Title of host publicationProceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages37-40
Number of pages4
ISBN (Print)981428212X, 9789814282123
Publication statusPublished - 2009 Jan 1
Externally publishedYes
Event9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008 - Hatoyama, Saitama, Japan
Duration: 2008 Aug 252008 Aug 28

Publication series

NameProceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008

Other

Other9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008
CountryJapan
CityHatoyama, Saitama
Period08/8/2508/8/28

Keywords

  • Anomalous tunneling
  • Bogoliubov phonon
  • Bose-Einstein condensate
  • Josephson effect

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Tsuchiya, S., & Ohashi, Y. (2009). Quasiparticle inducing josephson effect in a Bose-Einstein condensate. In Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008 (pp. 37-40). (Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008). World Scientific Publishing Co. Pte Ltd.