Физика Низких Температур: Том 31, Выпуск 8-9 (Август 2005), c. 907-917    ( к оглавлению , назад )

Quantum information storage and state transfer based on spin systems

Z. Song1 and C.P. Sun1,2

1Department of Physics, Nankai University, Tianjin 300071, China

2Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080, China
E-mail: songtc@nankai.edu.cn
suncp@itp.ac.cn

Received December 23, 2004

Аннотация

The idea of quantum state storage is generalized to describe the coherent transfer of quantum information through a coherent data bus. In this universal framework, we comprehensively review our recent systematical investigations to explore the possibility of implementing the physical processes of quantum information storage and state transfer by using quantum spin systems, which may be an isotropic antiferromagnetic spin ladder system or a ferromagnetic Heisenberg spin chain. Our studies emphasize the physical mechanisms and the fundamental problems behind the various protocols for the storage and transfer of quantum information in solid state systems.

PACS:
05.40.-a - Fluctuation phenomena, random processes, noise, and Brownian motion (for fluctuations in superconductivity, see 74.40.+k; for statistical theory and fluctuations in nuclear reactions, see 24.60.-k; for fluctuations in plasma, see 52.25.Gj)
03.65.-w - Quantum mechanics (see also 03.67.-a Quantum information; 05.30.-d Quantum statistical mechanics)
42.25.Bs - Wave propagation, transmission and absorption (see also 41.20.Jb-in electromagnetism; for propagation in atmosphere, see 42.68.Ay; see also 52.40.Db Electromagnetic (nonlaser) radiation interactions with plasma and 52.38-r Laser-plasma interactions-in pla
73.23.Hk - Coulomb blockade; single-electron tunneling