Particle trapping induced by the interplay between coherence and decoherence

Sangyong Yi, Mahn Soo Choi, Sang Wook Kim

Research output: Contribution to journalArticlepeer-review


We propose a novel scheme to trap a particle based on a delicate interplay between coherence and decoherence. If the decoherence occurs as a particle is located in the scattering region and subsequently the appropriate destructive interference takes place, the particle can be trapped in the scattering area. We consider two possible experimental realizations of such trapping: a ring attached to a single lead and a ring attached to two leads. Our scheme has nothing to do with a quasi-bound state of the system, but has a close analogy with the weak localization phenomena in disordered conductors.

Original languageEnglish
Pages (from-to)3239-3243
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number36
Publication statusPublished - 2009 Aug 31


  • Atom interferometry
  • Decoherence
  • Quantum optics

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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