Nondestructive discrimination of Greenberger-Horne-Zeilinger-basis states via two-qubit parity detection

Nondestructive discrimination of Greenberger-Horne-Zeilinger-basis states via two-qubit parity detection
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通过两个量子位奇偶校验检测对 Greenberger-Horne-Zeilinger 基态进行无损判别

DOI:
10.1007/s11433-014-5549-3
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发表时间:
2014-06
期刊:
Science in China: Physics, Mechanics & Astronomy
影响因子:
--
通讯作者:
L. M. Kuang
L. M. Kuang
中科院分区:
其他
文献类型:
--
作者:
X. W. Wang;S. Q. Tang;L. M. Kuang

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We propose new methods to construct universal Greenberger-Horne-Zeilinger (GHZ)-state analyzers without destroying the qubits by using two-qubit parity gates. The idea can be applied to any physical systems where the two-qubit parity gate can be realized. We also investigate the feasibility of nondestructively distinguishing the GHZ-basis states for photonic qubits with such an idea. The nondestructive GHZ-state analyzers can act as generators of GHZ entangled states and are expected to find useful applications for resource-saving quantum information processing.
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