One-step implementation of the 1->3 orbital state quantum cloning machine via quantum Zeno dynamics

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.062323· OSTI ID:21352323

Xiaoqiang, Shao; Hongfu, Wang; Shou, Zhang ^[1]; Li, Chen ^[2]; Yongfang, Zhao ^[1]; Yeon, Kyu-Hwang ^[3]

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1. Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150001 (China)
2. Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002 (China)
3. BK21 Program Physics and Department of Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763 (Korea, Republic of)

We present an approach for implementation of a 1->3 orbital state quantum cloning machine based on the quantum Zeno dynamics via manipulating three rf superconducting quantum interference device (SQUID) qubits to resonantly interact with a superconducting cavity assisted by classical fields. Through appropriate modulation of the coupling constants between rf SQUIDs and classical fields, the quantum cloning machine can be realized within one step. We also discuss the effects of decoherence such as spontaneous emission and the loss of cavity in virtue of master equation. The numerical simulation result reveals that the quantum cloning machine is especially robust against the cavity decay, since all qubits evolve in the decoherence-free subspace with respect to cavity decay due to the quantum Zeno dynamics.

• OSTI ID: 21352323
• Journal Information: Physical Review. A, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevA.80.062323; (c) 2009 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CLONING
COMPUTERIZED SIMULATION
COUPLING CONSTANTS
QUANTUM COMPUTERS
QUANTUM ELECTRODYNAMICS
QUBITS
SQUID DEVICES
SUPERCONDUCTING CAVITY RESONATORS
CAVITY RESONATORS
COMPUTERS
ELECTRODYNAMICS
ELECTRONIC EQUIPMENT
EQUIPMENT
FIELD THEORIES
FLUXMETERS
INFORMATION
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
QUANTUM FIELD THEORY
QUANTUM INFORMATION
RESONATORS
SIMULATION
SUPERCONDUCTING DEVICES