Remote quantum state preparation and transfer with the interactions of photons and quantum-dot spins

摘要

In this paper, we propose a scheme of remote quantum state preparation and transfer that use a double-sided cavity system, in which a singly charged quantum dot is embedded in a double-sided optical microcavity with partially reflective top and bottom mirrors. The implementation of the scheme mainly depends on the interaction between the input single-photon pulse and the spins of electrons in the coupling system. Discussions about the effect of the cavity loss, side leakage and exciton-cavity coupling strength for the fidelity of generated states show that the fidelity can remain high enough by controlling these parameters. Therefore, the current scheme is feasible in the experiment.