Multipartite entanglement generation assisted by inhomogeneous coupling

C. E. López, F. Lastra, G. Romero, E. Solano, and J. C. Retamal
Phys. Rev. A 85, 032319 – Published 16 March 2012

Abstract

We show that controllable inhomogeneous coupling between two-level systems and a common data bus provides a fast mechanism to produce multipartite entanglement. Our proposal combines resonant interactions and engineering of coupling strengths—between the qubits and the single mode—leading to well-defined entangled states. Furthermore, we show that, if the two-level systems interact dispersively with the quantized mode, engineering of coupling strengths allows the controlled access of the symmetric Hilbert space of qubits.

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  • Received 28 November 2011

DOI:https://doi.org/10.1103/PhysRevA.85.032319

©2012 American Physical Society

Authors & Affiliations

C. E. López1,2, F. Lastra1, G. Romero3, E. Solano3,4, and J. C. Retamal1,2

  • 1Departamento de Física, Universidad de Santiago de Chile, USACH, Casilla 307 Correo 2 Santiago, Chile
  • 2Center for the Development of Nanoscience and Nanotechnology, 9170124, Estación Central, Santiago, Chile
  • 3Departamento de Química Física, Universidad del País Vasco UPV/EHU, Apartado 644, 48080 Bilbao, Spain
  • 4IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36, 48011 Bilbao, Spain

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Issue

Vol. 85, Iss. 3 — March 2012

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