Please use this identifier to cite or link to this item:
https://doi.org/10.1088/1367-2630/17/4/045023
DC Field | Value | |
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dc.title | Coherent superposition of current flows in an atomtronic quantum interference device | |
dc.contributor.author | Aghamalyan, D | |
dc.contributor.author | Cominotti, M | |
dc.contributor.author | Rizzi, M | |
dc.contributor.author | Rossini, D | |
dc.contributor.author | Hekking, F | |
dc.contributor.author | Minguzzi, A | |
dc.contributor.author | Kwek, L.-C | |
dc.contributor.author | Amico, L | |
dc.date.accessioned | 2020-09-09T06:47:04Z | |
dc.date.available | 2020-09-09T06:47:04Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Aghamalyan, D, Cominotti, M, Rizzi, M, Rossini, D, Hekking, F, Minguzzi, A, Kwek, L.-C, Amico, L (2015). Coherent superposition of current flows in an atomtronic quantum interference device. New Journal of Physics 17 : 45023. ScholarBank@NUS Repository. https://doi.org/10.1088/1367-2630/17/4/045023 | |
dc.identifier.issn | 1367-2630 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/175289 | |
dc.description.abstract | We consider a correlated Bose gas tightly confined into a ring shaped lattice, in the presence of an artificial gauge potential inducing a persistent current through it. A weak link painted on the ring acts as a source of coherent back-scattering for the propagating gas, interfering with the forward scattered current. This system defines an atomic counterpart of the rf-SQUID: the atomtronics quantum interference device. The goal of the present study is to corroborate the emergence of an effective two-level system in such a setup and to assess its quality, in terms of its inner resolution and its separation from the rest of the many-body spectrum, across the different physical regimes. In order to achieve this aim, we examine the dependence of the qubit energy gap on the bosonic density, the interaction strength, and the barrier depth, and we show how the superposition between current states appears in the momentum distribution (time-of-flight) images. A mesoscopic ring lattice with intermediate-to-strong interactions and weak barrier depth is found to be a favorable candidate for setting up, manipulating and probing a qubit in the next generation of atomic experiments. © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. | |
dc.publisher | Institute of Physics Publishing | |
dc.source | Unpaywall 20200831 | |
dc.subject | Backscattering | |
dc.subject | Bosons | |
dc.subject | Coherent scattering | |
dc.subject | Forward scattering | |
dc.subject | Quantum computers | |
dc.subject | Quantum interference phenomena | |
dc.subject | SQUIDs | |
dc.subject | Coherent backscattering | |
dc.subject | Coherent superpositions | |
dc.subject | Interaction strength | |
dc.subject | Momentum distributions | |
dc.subject | One-dimensional bosons | |
dc.subject | Persistent currents | |
dc.subject | Strong interaction | |
dc.subject | Two-level system | |
dc.subject | Quantum interference devices | |
dc.type | Article | |
dc.contributor.department | CENTRE FOR QUANTUM TECHNOLOGIES | |
dc.description.doi | 10.1088/1367-2630/17/4/045023 | |
dc.description.sourcetitle | New Journal of Physics | |
dc.description.volume | 17 | |
dc.description.page | 45023 | |
dc.published.state | Published | |
Appears in Collections: | Staff Publications Elements |
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