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Mach-Zehnder interferometer with squeezed and EPR entangled optical fields |
| Xu-Dong Xu(于旭东)1,3, Wei Li(李卫)1,3, Shi-Yao Zhu(朱诗尧)2, Jing Zhang(张靖)1 |
1. The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
2. Beijing Computational Science Research Center, Beijing 100084, China;
3. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China |
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Abstract We study a scheme for Mach-Zehnder (MZ) interferometer as a quantum linear device by injecting two-mode squeezed input states into two ports of interferometer. Two-mode squeezed states can be changed into two types of inputs for MZ interferometer: two squeezed states and Einstein-Podolsky-Rosen (EPR) entangled states. The interference patterns of the MZ interferometer vary periodically as the relative phase of the two arms of the interferometer is scanned, and are measured by the balanced homodyne detection system. Our experiments show that there are different interference patterns and periodicity of the output quantum states for two cases which depend on the relative phase of input optical fields. Since MZ interferometer can be used to realize some quantum operations, this work will have the important applications in quantum information and metrology.
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Received: 28 June 2015
Revised: 07 September 2015
Accepted manuscript online:
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PACS:
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03.67.-a
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(Quantum information)
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07.60.Ly
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(Interferometers)
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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB921601), the National Natural Science Foundation of China (Grant Nos. 11234008, 11361161002, and 61571276), the Doctoral Program Foundation of the Ministry of Education China (Grant No. 20111401130001), and the Natural Science Foundation of Shanxi Province, China (Grant No. 2015011007). |
Corresponding Authors:
Jing Zhang
E-mail: jzhang74@aliyun.com
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Cite this article:
Xu-Dong Xu(于旭东), Wei Li(李卫), Shi-Yao Zhu(朱诗尧), Jing Zhang(张靖) Mach-Zehnder interferometer with squeezed and EPR entangled optical fields 2016 Chin. Phys. B 25 020304
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