Skip to main content
SpringerLink
Log in

Selective measurements of superconducting qubit states by a nonlinear Josephson oscillator

  • Superconductivity
  • Published:
Physics of the Solid State Aims and scope Submit manuscript

Abstract

Selective measurements of the states are studied for a single quantum system, viz, a Josephson qubit, by a nonlinear oscillator operating in the mesoscopic regime in which the number of quanta during measurements is varied from a few dozen to several hundreds. The quantum Monte Carlo method is used to simulate the dissipative dynamics of the qubit–oscillator system and the process of measurements of the qubit states from the change in the number of oscillator quanta. It is shown that for π-pulses in the recording of qubit states, discrimination of states is possible in single realizations (measurements), while statistical projective measurements can be made for the prepared superposition state.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. I. Siddiqi, R. Vijay, M. Metcalfe, E. Boaknin, L. Frunzio, R. J. Schoelkopf, and M. H. Devoret, Phys. Rev. B: Condens. Matter 73, 054510 (2006).

    Article  ADS  Google Scholar 

  2. T. Picot, A. Lupascu, S. Saito, C. J. P. M. Harmans, and J. E. Mooij, Phys. Rev. B: Condens. Matter 78, 132508 (2008).

    Article  ADS  Google Scholar 

  3. R. Vijay, D. H. Slichter, and I. Siddiqi, Phys. Rev. Lett. 106, 110502 (2011).

    Article  ADS  Google Scholar 

  4. M. O. Scully and M. S. Zubairy, Quantum Optics (Cambridge University Press, Cambridge, 1997; Fizmatlit, Moscow, 2003).

    MATH  Google Scholar 

  5. M. B. Plenio and P. L. Knight, Rev. Mod. Phys. 70, 101 (1998).

    Article  ADS  Google Scholar 

  6. D. Vion, A. Aassime, A. Cottet, P. Joyez, H. Pothier, C. Urbina, D. Esteve, and M. H. Devoret, Science (Washington) 296, 886 (2002)

    Article  ADS  Google Scholar 

  7. V. B. Braginsky and F. Ya. Khalil, Quantum Measurement (Cambridge University Press, Cambridge, 1995).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Lobachevsky State University of Nizhny Novgorod, pr. Gagarina 23, Nizhny Novgorod, 603950, Russia

    V. P. Gergel’, M. V. Denisenko, A. V. Linev & A. M. Satanin

Authors
  1. V. P. Gergel’
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. V. Denisenko
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. V. Linev
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. M. Satanin
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to M. V. Denisenko.

Additional information

Original Russian Text © V.P. Gergel’, M.V. Denisenko, A.V. Linev, A.M. Satanin, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 11, pp. 2109–2116.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gergel’, V.P., Denisenko, M.V., Linev, A.V. et al. Selective measurements of superconducting qubit states by a nonlinear Josephson oscillator. Phys. Solid State 58, 2182–2190 (2016). https://doi.org/10.1134/S106378341611010X

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S106378341611010X

Search

Navigation