View in EDS PDF Full Text

Coupling superconducting qubits via a cavity bus.

Saved in:
Bibliographic Details
Title: Coupling superconducting qubits via a cavity bus.
Authors: Majer, J., Chow, J. M., Gambetta, J. M., Koch, Jens, Johnson, B. R., Schreier, J. A., Frunzio, L., Schuster, D. I., Houck, A. A., Wallraff, A., Blais, A., Devoret, M. H., Girvin, S. M., Schoelkopf, R. J.
Source: Nature. 9/27/2007, Vol. 449 Issue 7161, p443-447. 5p. 1 Diagram, 3 Graphs.
Subjects: Electronic circuits testing, Electronic circuits, Experiments, Testing equipment industry, Electronic circuit testing equipment industry, Electronic composition, Quantum computers, Electronic information resources, Computer architecture
Abstract: Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single-qubit operations are now routine, and several examples of two-qubit interactions and gates have been demonstrated. These experiments show that two nearby qubits can be readily coupled with local interactions. Performing gate operations between an arbitrary pair of distant qubits is highly desirable for any quantum computer architecture, but has not yet been demonstrated. An efficient way to achieve this goal is to couple the qubits to a ‘quantum bus’, which distributes quantum information among the qubits. Here we show the implementation of such a quantum bus, using microwave photons confined in a transmission line cavity, to couple two superconducting qubits on opposite sides of a chip. The interaction is mediated by the exchange of virtual rather than real photons, avoiding cavity-induced loss. Using fast control of the qubits to switch the coupling effectively on and off, we demonstrate coherent transfer of quantum states between the qubits. The cavity is also used to perform multiplexed control and measurement of the qubit states. This approach can be expanded to more than two qubits, and is an attractive architecture for quantum information processing on a chip. [ABSTRACT FROM AUTHOR]
Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: pbh
DbLabel: Psychology and Behavioral Sciences Collection
An: 26858779
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Coupling superconducting qubits via a cavity bus.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Majer%2C+J%2E%22">Majer, J.</searchLink><br /><searchLink fieldCode="AR" term="%22Chow%2C+J%2E+M%2E%22">Chow, J. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Gambetta%2C+J%2E+M%2E%22">Gambetta, J. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Koch%2C+Jens%22">Koch, Jens</searchLink><br /><searchLink fieldCode="AR" term="%22Johnson%2C+B%2E+R%2E%22">Johnson, B. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Schreier%2C+J%2E+A%2E%22">Schreier, J. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Frunzio%2C+L%2E%22">Frunzio, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Schuster%2C+D%2E+I%2E%22">Schuster, D. I.</searchLink><br /><searchLink fieldCode="AR" term="%22Houck%2C+A%2E+A%2E%22">Houck, A. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Wallraff%2C+A%2E%22">Wallraff, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Blais%2C+A%2E%22">Blais, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Devoret%2C+M%2E+H%2E%22">Devoret, M. H.</searchLink><br /><searchLink fieldCode="AR" term="%22Girvin%2C+S%2E+M%2E%22">Girvin, S. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Schoelkopf%2C+R%2E+J%2E%22">Schoelkopf, R. J.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 9/27/2007, Vol. 449 Issue 7161, p443-447. 5p. 1 Diagram, 3 Graphs.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electronic+circuits+testing%22">Electronic circuits testing</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+circuits%22">Electronic circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Experiments%22">Experiments</searchLink><br /><searchLink fieldCode="DE" term="%22Testing+equipment+industry%22">Testing equipment industry</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+circuit+testing+equipment+industry%22">Electronic circuit testing equipment industry</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+composition%22">Electronic composition</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+computers%22">Quantum computers</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+information+resources%22">Electronic information resources</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+architecture%22">Computer architecture</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single-qubit operations are now routine, and several examples of two-qubit interactions and gates have been demonstrated. These experiments show that two nearby qubits can be readily coupled with local interactions. Performing gate operations between an arbitrary pair of distant qubits is highly desirable for any quantum computer architecture, but has not yet been demonstrated. An efficient way to achieve this goal is to couple the qubits to a ‘quantum bus’, which distributes quantum information among the qubits. Here we show the implementation of such a quantum bus, using microwave photons confined in a transmission line cavity, to couple two superconducting qubits on opposite sides of a chip. The interaction is mediated by the exchange of virtual rather than real photons, avoiding cavity-induced loss. Using fast control of the qubits to switch the coupling effectively on and off, we demonstrate coherent transfer of quantum states between the qubits. The cavity is also used to perform multiplexed control and measurement of the qubit states. This approach can be expanded to more than two qubits, and is an attractive architecture for quantum information processing on a chip. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=26858779
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1038/nature06184
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 443
    Subjects:
      – SubjectFull: Electronic circuits testing
        Type: general
      – SubjectFull: Electronic circuits
        Type: general
      – SubjectFull: Experiments
        Type: general
      – SubjectFull: Testing equipment industry
        Type: general
      – SubjectFull: Electronic circuit testing equipment industry
        Type: general
      – SubjectFull: Electronic composition
        Type: general
      – SubjectFull: Quantum computers
        Type: general
      – SubjectFull: Electronic information resources
        Type: general
      – SubjectFull: Computer architecture
        Type: general
    Titles:
      – TitleFull: Coupling superconducting qubits via a cavity bus.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Majer, J.
      – PersonEntity:
          Name:
            NameFull: Chow, J. M.
      – PersonEntity:
          Name:
            NameFull: Gambetta, J. M.
      – PersonEntity:
          Name:
            NameFull: Koch, Jens
      – PersonEntity:
          Name:
            NameFull: Johnson, B. R.
      – PersonEntity:
          Name:
            NameFull: Schreier, J. A.
      – PersonEntity:
          Name:
            NameFull: Frunzio, L.
      – PersonEntity:
          Name:
            NameFull: Schuster, D. I.
      – PersonEntity:
          Name:
            NameFull: Houck, A. A.
      – PersonEntity:
          Name:
            NameFull: Wallraff, A.
      – PersonEntity:
          Name:
            NameFull: Blais, A.
      – PersonEntity:
          Name:
            NameFull: Devoret, M. H.
      – PersonEntity:
          Name:
            NameFull: Girvin, S. M.
      – PersonEntity:
          Name:
            NameFull: Schoelkopf, R. J.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 27
              M: 09
              Text: 9/27/2007
              Type: published
              Y: 2007
          Identifiers:
            – Type: issn-print
              Value: 00280836
          Numbering:
            – Type: volume
              Value: 449
            – Type: issue
              Value: 7161
          Titles:
            – TitleFull: Nature
              Type: main
ResultId 1