Quantum-state transfer characterized by mode entanglement

Xiao Feng Qian, Ying Li, Yong Li, Z. Song, C. P. Sun

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We study the quantum-state transfer (QST) of a class of tight-bonding Bloch electron systems with mirror symmetry by considering the mode entanglement. Some rigorous results are obtained to reveal the intrinsic relationship between the fidelity of QST and the mirror mode concurrence (MMC), which is defined to measure the mode entanglement with a certain spatial symmetry and is just the overlap of a proper wave function with its mirror image. A complementarity is discovered as the maximum fidelity is accompanied by a minimum of the MMC. At the instant that is just half of the characteristic time required to accomplish a perfect QST, the MMC can reach its maximum value of 1. A large class of perfect QST models with a certain spectral structure is discovered to support our analytical results.

Original languageEnglish
Article number062329
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume72
Issue number6
DOIs
StatePublished - Dec 2005

Fingerprint

Dive into the research topics of 'Quantum-state transfer characterized by mode entanglement'. Together they form a unique fingerprint.

Cite this