Quantum correlation in superconducting Two-Qubit systems

Document Type : Original Article

Authors

1 Department of physics, University of Tabriz, Tabriz, Iran

2 Department of electrical engineering, Malek Ashtar University of Technology, Tehran, Iran

3 Department of Mathematics, Payame Noor University, Tehran, Iran

Abstract

We consider a two-qubit superconducting system. By introducing the two measures of Concurrence and discord, we calculate the value of the correlations of this system and also determine the changes of the correlations of this system with respect to the temperature and the coupling of the circuits.

Keywords

References

[1] H. Ollivier and W.H. Zurek, Quantum Discord: A Measure of the Quantumness of Correlations, Physical review letters 88(1) 2001, 017901.
[2] G.S. Paraoanu, Microwave-induced coupling of superconducting qubits, Physical Review B, 74(14) 2006, 140504.
[3] J. Shi, Entanglement Research for the Coupled Superconducting Phase Qubit and a Two-Level System, Advances in Condensed Matter Physics, 2020, 2020.
[4] W.L. Song, J.B. You, J.K. Xu, W.L. Yang, J.H. An, Floquet Engineering of Two Weakly Coupled Superconducting Flux Qubits Physical Review Applied, 14(5) 2020, 054049.
[5] W.K. Wootters, Entanglement of Formation of an Arbitrary State of Two Qubits, Physical Review Letters, 80(10) 1998, 2245.
Mathematics and Computational Sciences
Volume 2, Issue 3
September 2021
Pages 27-32

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History

  • Receive Date: 16 June 2021
  • Revise Date: 11 August 2021
  • Accept Date: 13 August 2021
  • First Publish Date: 13 August 2021

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