Published May 2009 | Version v1
Journal article Metadata-only

Decoherence from spin environment: Role of the Dzyaloshinsky-Moriya interaction

Creators

  • 1. and International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016 (China)
  • 2. School of Physics, South China Normal University, Guangzhou 510006 (China)
  • 3. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)
  • 4. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China) and Department of Physics, Hubei Normal University, Huangshi 435002 (China)

Description

We study the time evolution of decoherence factor of two spin qubits and qutrits coupled to an XY spin chain with Dzyaloshinsky-Moriya (DM) interaction environment. The dynamical process of the decoherence is numerically and analytically investigated. We find that the DM interaction can enhance slightly the decay of the decoherence factor in the weak-coupling region. However, in the strong-coupling region, the decoherence factor is very sensitive to the DM interaction.

Additional details

Identifiers

DOI
10.1103/PhysRevA.79.052320;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
79
Journal Issue
5
Journal Page Range
p. 052320-052320.7
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41045619
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
COUPLING; ENVIRONMENT; INTERACTIONS; QUANTUM COMPUTERS; QUANTUM ENTANGLEMENT; QUBITS; SPIN
Descriptors DEC
ANGULAR MOMENTUM; COMPUTERS; INFORMATION; PARTICLE PROPERTIES; QUANTUM INFORMATION

Optional Information

Notes
(c) 2009 The American Physical Society