Entanglement of two superconducting qubits interacting with two-mode thermal field
E.K. Bashkirov, M.S. Mastyugin

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2013-37-3-278-285

Pages: 278-285.

Abstract:
The influence of dipole-dipole interaction and initial coherence of two flux qubits interacting with two different electronic superconducting LC-cavities in thermal states on the entanglement degree has been investigated.

Key words:
flux qubits, nondegenerate two-photon transitions, entanglement, dipole-dipole interaction, thermal field.

References:

  1. Schumacker, D. Quantum Processes, Systems, and Informa­tion / D. Schumacker, M.D. Westmoreland. – NY: Cambridge University Press, 2010. – 469 p.
  2. Buluta, I. Natural and artificial atoms for quantum computation / I. Buluta, S. Ashhab, F. Nori // Rep. Prog. Phys. – 2011. – Vol. 74. – P. 104401.
  3. Plenio, M.B. Cavity-loss-induced generation of entangled atoms / M.B. Plenio, S.F. Huelga, A. Beige, P.L. Knight // Phys. Rev. – 1999. – Vol. A59, N 3. – P. 2468-2475.
  4. Bashkirov, E.K. Entanglement between two atoms successively passing a cavity induced by thermal noise / E.K. Bashkirov, Yu.A. Nikiforova // Computer Optics. – 2011. – Vol. 36(4). – P. 468-473. – (In Russian).
  5. Bose, S. Subsystem purity as an enforcer of entanglement / S. Bose, I. Fruentes-Guridi, P.L. Knight, V. Vedral // Phys. Rev. Lett. – 2001. – Vol. 87. – P. 050401.
  6. Kim, M.S. Entanglement induced by a single-mode heat environment / M.S. Kim, J. Lee, D. Ahn, P.L. Knight // Phys. Rev. – 2002. – Vol. A65. – P. 040101.
  7. Zhou, L. Entanglement induced by a single-mode thermal field and criteria for entanglement / L. Zhou, H.S. Song // J. Opt.. – 2002. – Vol. B4. – P. 425-429.
  8. Bashkirov, E.K. Entanglement induced by the two-mode thermal noise / E.K. Bashkirov // Laser Physics Lett. – 2006. – Vol. 3, N 3. – P. 145-150.
  9. Bashkirov, E.K. The entanglement of two dipole-dipole coupled atoms induced by nondegenerate two-mode thermal noise / E.K. Bashkirov, M.S. Stupatskaya // Laser Phys. –2009. – Vol. 19. – P. 525-530.
  10. Aguiar, L.S. The entanglement of two dipole-dipole coupled in a cavity interacting with a thermal field / L.S. Aguiar, P.P. Munhoz, A. Vidiella-Barranco, J.A. Ro­versi // J. Opt. – 2005. – Vol. B7. – P. S769-771.
  11. Bashkirov, E.K. Entanglement of two atoms interacting with thermal electromagnetic field / E.K. Bashkirov, M.P. Stuypatskaya // Computer Optics. – 2011. – Vol. 35(2). – P. 243-249. – (In Russian).
  12. Hu, Y.-H. Coherence-enhanced entanglement between two atoms at a high temperature / Y.-H. Hu, M.-F. Fang, C.-L. Ji­ang, K. Zeng // Chin. Phys. – 2008. – Vol. 17. – P. 1784-1790.
  13. Hu, Y.-H. Coherence-Enhanced Entanglement Induced by a Two-Mode Thermal Field / Y.-H. Hu, M.-F. Fang // Comm. Theor. Phys. – 2010. – Vol. 54. – P. 421-426.
  14. You, J. Q. Atomic physics and quantum optics using superconducting circuits / J.Q. You, F. Nori // Nature. – 2011. – Vol. 474. – P. 589-597.
  15. Bashkirov, E.K. Entanglement in nondegenerate two-photon Tavis-Cummings model with atomic coherence / E.K. Bashkirov, M.S. Mastuygin // Proc. of SPIE. – 2013. – Vol. 8699. – P. 86990W.
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