High Fidelity State Transfer Over an Unmodulated Linear $XY$ Spin Chain

C. Allen Bishop; Yong-Cheng Ou; Zhao-Ming Wang; Mark Byrd

High Fidelity State Transfer Over an Unmodulated Linear $XY$ Spin Chain

ORAL

Abstract

We provide a class of initial encodings that can be sent with a high fidelity over an unmodulated, linear, $XY$ spin chain. As an example, an average fidelity of 96\% can be obtained using an 11-spin encoding to transmit a state over a chain containing 10,000 spins. An analysis of the magnetic-field dependence is given, and conditions for field optimization are provided.

March 24, 2011, 10:00 AM – March 24, 2011, 10:12 AM

Authors

C. Allen Bishop

Department of Physics, Southern Illinois University Carbondale, Physics Department, Southern Illinois University
Yong-Cheng Ou

Department of Physics, Texas Tech University, Department of Chemistry, Texas Tech University, Lubbock, Texas 79409, Physics Department, Southern Illinois University
Zhao-Ming Wang

Department of Physics, Ocean University of China
Mark Byrd

Southern Illinois University Carbondale, Department of Physics, Southern Illinois University Carbondale, Department of Physics and Department of Computer Science, Southern Illinois University, Carbondale, Illinois 62901, Southern Illinois University