Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/15684
Title: 
Authors: 
Issue Date: 
2010
Citation: 
Hu, J. Z., Wang, X. B., & Kwek, L. C. (2010). Protecting two-qubit quantum states by π-phase pulses. Physical Review A, 82(6), 062317.
Abstract: 
We study the state decay of two qubits interacting with a common harmonic oscillator reservoir. We find
both a decoherence error and the error caused by the amplitude change of the superradiant state. We show that
frequent π-phase pulses can eliminate both types of errors and therefore protect a two-qubit odd-parity state more
effectively than the frequent measurement method. This shows that the methods using dynamical decoupling and
the quantum Zeno effects actually can give rather different results when the operation frequency is finite.
URI: 
ISSN: 
1050-2947
Other Identifiers: 
10.1103/PhysRevA.82.062317
Website: 
Appears in Collections:Journal Articles

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