Home > Research > Publications & Outputs > Coherent quantum phase slip

Research

Associated organisational units

Links

Text available via DOI:

View graph of relations

Coherent quantum phase slip

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Coherent quantum phase slip. / Astafiev, O. V.; Ioffe, L. B.; Kafanov, S. et al.
In: Nature, Vol. 484, No. 7394, 19.04.2012, p. 355-358.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Astafiev, OV, Ioffe, LB, Kafanov, S, Pashkin, Y, Arutyunov, KY, Shahar, D, Cohen, O & Tsai, JS 2012, 'Coherent quantum phase slip', Nature, vol. 484, no. 7394, pp. 355-358. https://doi.org/10.1038/nature10930

APA

Astafiev, O. V., Ioffe, L. B., Kafanov, S., Pashkin, Y., Arutyunov, K. Y., Shahar, D., Cohen, O., & Tsai, J. S. (2012). Coherent quantum phase slip. Nature, 484(7394), 355-358. https://doi.org/10.1038/nature10930

Vancouver

Astafiev OV, Ioffe LB, Kafanov S, Pashkin Y, Arutyunov KY, Shahar D et al. Coherent quantum phase slip. Nature. 2012 Apr 19;484(7394):355-358. doi: 10.1038/nature10930

Author

Astafiev, O. V. ; Ioffe, L. B. ; Kafanov, S. et al. / Coherent quantum phase slip. In: Nature. 2012 ; Vol. 484, No. 7394. pp. 355-358.

Bibtex

@article{d6a95a73b27547289227e4b5331701ea,
title = "Coherent quantum phase slip",
abstract = "A hundred years after the discovery of superconductivity, one fundamental prediction of the theory, coherent quantum phase slip (CQPS), has not been observed. CQPS is a phenomenon exactly dual(1) to the Josephson effect; whereas the latter is a coherent transfer of charges between superconducting leads(2,3), the former is a coherent transfer of vortices or fluxes across a superconducting wire. In contrast to previously reported observations(4-8) of incoherent phase slip, CQPS has been only a subject of theoretical study(9-12). Its experimental demonstration is made difficult by quasiparticle dissipation due to gapless excitations in nanowires or in vortex cores. This difficulty might be overcome by using certain strongly disordered superconductors near the superconductor-insulator transition. Here we report direct observation of CQPS in a narrow segment of a superconducting loop made of strongly disordered indium oxide; the effect is made manifest through the superposition of quantum states with different numbers of flux quanta(13). As with the Josephson effect, our observation should lead to new applications in superconducting electronics and quantum metrology(1,10,11).",
author = "Astafiev, {O. V.} and Ioffe, {L. B.} and S. Kafanov and Yuri Pashkin and Arutyunov, {K. Yu.} and D. Shahar and O. Cohen and Tsai, {J. S.}",
year = "2012",
month = apr,
day = "19",
doi = "10.1038/nature10930",
language = "English",
volume = "484",
pages = "355--358",
journal = "Nature",
issn = "0028-0836",
publisher = "Nature Publishing Group",
number = "7394",

}

RIS

TY - JOUR

T1 - Coherent quantum phase slip

AU - Astafiev, O. V.

AU - Ioffe, L. B.

AU - Kafanov, S.

AU - Pashkin, Yuri

AU - Arutyunov, K. Yu.

AU - Shahar, D.

AU - Cohen, O.

AU - Tsai, J. S.

PY - 2012/4/19

Y1 - 2012/4/19

N2 - A hundred years after the discovery of superconductivity, one fundamental prediction of the theory, coherent quantum phase slip (CQPS), has not been observed. CQPS is a phenomenon exactly dual(1) to the Josephson effect; whereas the latter is a coherent transfer of charges between superconducting leads(2,3), the former is a coherent transfer of vortices or fluxes across a superconducting wire. In contrast to previously reported observations(4-8) of incoherent phase slip, CQPS has been only a subject of theoretical study(9-12). Its experimental demonstration is made difficult by quasiparticle dissipation due to gapless excitations in nanowires or in vortex cores. This difficulty might be overcome by using certain strongly disordered superconductors near the superconductor-insulator transition. Here we report direct observation of CQPS in a narrow segment of a superconducting loop made of strongly disordered indium oxide; the effect is made manifest through the superposition of quantum states with different numbers of flux quanta(13). As with the Josephson effect, our observation should lead to new applications in superconducting electronics and quantum metrology(1,10,11).

AB - A hundred years after the discovery of superconductivity, one fundamental prediction of the theory, coherent quantum phase slip (CQPS), has not been observed. CQPS is a phenomenon exactly dual(1) to the Josephson effect; whereas the latter is a coherent transfer of charges between superconducting leads(2,3), the former is a coherent transfer of vortices or fluxes across a superconducting wire. In contrast to previously reported observations(4-8) of incoherent phase slip, CQPS has been only a subject of theoretical study(9-12). Its experimental demonstration is made difficult by quasiparticle dissipation due to gapless excitations in nanowires or in vortex cores. This difficulty might be overcome by using certain strongly disordered superconductors near the superconductor-insulator transition. Here we report direct observation of CQPS in a narrow segment of a superconducting loop made of strongly disordered indium oxide; the effect is made manifest through the superposition of quantum states with different numbers of flux quanta(13). As with the Josephson effect, our observation should lead to new applications in superconducting electronics and quantum metrology(1,10,11).

UR - http://www.scopus.com/inward/record.url?scp=84859755582&partnerID=8YFLogxK

U2 - 10.1038/nature10930

DO - 10.1038/nature10930

M3 - Journal article

VL - 484

SP - 355

EP - 358

JO - Nature

JF - Nature

SN - 0028-0836

IS - 7394

ER -