Construction of General Unitary Transformation for Conditional Quantum Dynamics and Realization of Quantum Controlled Gates

Chin. Phys. Lett.

1998, Vol. 15

Issue (6): 395-397 DOI:

Original Articles

Construction of General Unitary Transformation for Conditional Quantum Dynamics and Realization of Quantum Controlled Gates

WANG Xiao-guang^1,2;YU Rong-jin¹;FU Jian-zheng²

¹Laboratory of Excited State Processes, Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021 ²Department of Computer Engineering, Changchun University, Changchun 130022

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WANG Xiao-guang, YU Rong-jin, FU Jian-zheng 1998 Chin. Phys. Lett. 15 395-397

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Abstract By factorizing a general one-bit transformation matrix for one-bit gates in quantum computer, a general unitary transformation is constructed, which can serve as (controlled)^m gate for the conditional quantum dynamics. When the quantized single-mode electromagnetic field containing n or no photons acts as the controlled bit, the quantum controlled-NOT gates and square root of the controlled-NOT gates in cavity-quantum electrodynamics are realized.

Keywords: 03.65.Bz 42.50.-p 89.80.+h

Published: 01 June 1998

PACS:	03.65.Bz
	42.50.-p	(Quantum optics)
	89.80.+h

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I6/0395

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