| Discrimination of coherent states via atom–field interaction without rotation wave approximation |
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| 作者姓名： | Jin-Hua Zhang Fu-Lin Zhang Mai-Lin Liang Zhi-Xi Wang Shao-Ming Fei |
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| 作者单位： | 1. Department of Physics, Xinzhou Teachers University;2. Department of Physics, School of Science, Tianjin University;3. School of Mathematical Sciences, Capital Normal University;4. Max-Planck-Institute for Mathematics in the Sciences |
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| 基金项目： | funded by the NSF of China (Grant Nos. 11675119, 12075159, 11575125, 12171044);;Beijing Natural Science Foundation (Z190005); |
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| 摘 要： | Quantum state discrimination is an important part of quantum information processing. We investigate the discrimination of coherent states through a Jaynes–Cummings(JC) model interaction between the field and the ancilla without rotation wave approximation(RWA). We show that the minimum failure probability can be reduced as RWA is eliminated from the JC model and the non-RWA terms accompanied by the quantum effects of fields(e.g. the virtualphoton process in the JC model without RWA) can enhance ...
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