Perfect transfer of coherent state-based qubits via coupled cavities
Research Institute for Fundamental Sciences,
Department of Theoretical Physics and Astrophysics, Faculty of Physics, University of
Received in final form: 19 September 2013
Published online: 28 November 2013
Motivated by the need for communication of coherent state-based qubits in quantum computers, we introduce a method for perfect transferring of an arbitrary superposition of coherent states between two distant nodes of a linear array of three semiconductor QDs. The QDs are trapped in a system of coupled cavities. In this method, the field mode of the cavities, as the resource of transferring of quantum states, are only virtually excited which minimises the effect of decoherence due to photon loss. Also, by a numerical evaluation, the effect of decoherence on the quality of state transfer processes in the system is directly investigated.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2013