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篇目详细内容 |
【篇名】 |
Enhancement of Kerr nonlinearity and its application to entangled state discrimination |
【刊名】 |
Frontiers of Physics in China |
【刊名缩写】 |
Front. Phys. China |
【ISSN】 |
1673-3487 |
【EISSN】 |
1673-3606 |
【DOI】 |
10.1007/s11467-007-0051-2 |
【出版社】 |
Higher Education Press and Springer-Verlag |
【出版年】 |
2007 |
【卷期】 |
2
卷4期 |
【页码】 |
403-409
页,共
7
页 |
【作者】 |
NIU Yue-ping;
QIAN Jun;
FENG Xun-li;
GONG Shang-qing;
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【关键词】 |
Kerr nonlinearity; dark resonance; entangled state discrimination |
【摘要】 |
In this paper, the recent research on the enhanced Kerr nonlinearity and its application in entangled state discrimination is reported. Two kinds of dynamics, including interacting double dark resonances and spontaneously generated coherence, are presented to enhance the Kerr nonlinearity. The application of Kerr nonlinearity in quantum state discrimination is also discussed. An arbitrary Greenberger-Horne-Zeilinger state can be discriminated using two-photon polarization parity detection which resorts to cross-Kerr nonlinearity between a single-photon qubit and probe field. In addition, a scheme for Greenberger-Horne-Zeilinger state discrimination of matter qubits is also proposed using the dipole induced transparency in a cavity-dipole system. |
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