Multipartite entanglement generation assisted by inhomogeneous coupling

Printer-friendly versionSend by emailPDF version

C. E. López, F. Lastra, G. Romero, E. Solano, and J. C. Retamal


Phys. Rev. A 85, 032319 (2012)

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.