Quantum State Transfer between a Mechanical Oscillator and a Distant Moving Atom

Abstract

We propose a scheme for high fidelity quantum state transfer from a mechanical oscillator to a distant moving atom. In the scheme, two optical cavities connected by an optical fiber are interacted effectively through adiabatically eliminating fiber mode under large detuning limit. The quantum state transfer fidelity can be raised asymptotically to 100% by optimizing the Gaussian pulse G(t) , the maximum atom-cavity coupling strength Ω max , and the atomic velocity v . We also show that the affect of dissipation can be obviously depressed by synchronously increasing Ω max and v .