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Title: Indirect control with a quantum accessor: Coherent control of multilevel system via a qubit chain

Abstract

The indirect controllability of an arbitrary finite-dimensional quantum system (N-dimensional qudit) through a quantum accessor is investigated. Here, the qudit is coupled to a quantum accessor, which is modeled as a fully controllable spin chain with nearest-neighbor (anisotropic) XY coupling. The complete controllability of such an indirect control system is investigated in detail. The general approach is applied to the indirect controllability of two- and three-dimensional quantum systems. For two- and three-dimensional systems, a simpler indirect control scheme is also presented.

Authors:
 [1]; ;  [2];  [3]
  1. School of Physics, Shenzhen University, Shenzhen 518060 (China)
  2. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)
  3. Department of Mathematics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
20982486
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.052317; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CONTROL; COUPLING; QUANTUM COMPUTERS; QUANTUM INFORMATION; QUANTUM MECHANICS; QUBITS; SPIN; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Fu, H. C., Dong, Hui, Sun, C. P., and Liu, X. F. Indirect control with a quantum accessor: Coherent control of multilevel system via a qubit chain. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.052317.
Fu, H. C., Dong, Hui, Sun, C. P., & Liu, X. F. Indirect control with a quantum accessor: Coherent control of multilevel system via a qubit chain. United States. doi:10.1103/PHYSREVA.75.052317.
Fu, H. C., Dong, Hui, Sun, C. P., and Liu, X. F. Tue . "Indirect control with a quantum accessor: Coherent control of multilevel system via a qubit chain". United States. doi:10.1103/PHYSREVA.75.052317.
@article{osti_20982486,
title = {Indirect control with a quantum accessor: Coherent control of multilevel system via a qubit chain},
author = {Fu, H. C. and Dong, Hui and Sun, C. P. and Liu, X. F.},
abstractNote = {The indirect controllability of an arbitrary finite-dimensional quantum system (N-dimensional qudit) through a quantum accessor is investigated. Here, the qudit is coupled to a quantum accessor, which is modeled as a fully controllable spin chain with nearest-neighbor (anisotropic) XY coupling. The complete controllability of such an indirect control system is investigated in detail. The general approach is applied to the indirect controllability of two- and three-dimensional quantum systems. For two- and three-dimensional systems, a simpler indirect control scheme is also presented.},
doi = {10.1103/PHYSREVA.75.052317},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}