High-fidelity quantum state transfer through a dissipative quantum data bus**Supported by the Shandong Provincial Natural Science Foundation under Grant No. ZR2016AM18 and the National Natural Science Foundation of China under Grant No. 61675118.

Abstract

We propose and analyze a robust quantum state transfer protocol through a scalable quantum data bus that consists of a network of controlled dissipative modules. In particular, we first demonstrate the ability to achieve perfect state transfer between two distinct quantum sites which are adiabatically coupled to the data bus in non-dissipative situation. We then consider the role of dissipation in adiabatic quantum state transfer via using Born–Markov master equation in the standard Lindblad form. Numerical simulation shows that the dissipation effect on the quality of transmission can be suppressed by engineering the network couplings of data bus properly.