Abstract
Three classes of quantum states are induced from coherent state (CS) based on three operations associated with the photon creation operator. One class is the famous photon-added coherent state (PACS) introduced by Agarwal and Tara (Phys. Rev. A 43, 492–497, 1991). The other two classes are the orthogonal states of the CS (Here we abbreviate them as OCS1 and OCS2). Indeed, the OCS1 is just the displacement Fock state, and the OCS2 is constructed by orthogonalizer proposed by Kim group (Phys. Rev. Lett. 116, 110501, 2016). In contrast to the original CS, the three induced states can exhibit their respective nonclassical properties. We study and compare some properties for these four quantum states (CS, PACS, OCS1, OCS2). The studied properties include the mean number of photons, the sub-Poissonian character, the squeezing effect in the field quadrature, and the quasi-probability distributions including the Husimi Q function and the Wigner function. Besides, their fidelities between each two of them are also discussed.
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Supported by the National Natural Science Foundation of China (Nos.11665013 and 11704051), the Natural Science Foundation of Jiangsu Province(No.BK20171197), the Jiangsu Collaborative Innovation Centre for Cultural Creativity (No.XYN1706), and the Research Foundation of 333 Project of Jiangsu Province (No.BRA2018161).
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Yuan, HC., Xu, XX., Cai, JW. et al. Induced States from Coherent State via Photon-Addition Operations. Int J Theor Phys 58, 1908–1926 (2019). https://doi.org/10.1007/s10773-019-04086-8
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DOI: https://doi.org/10.1007/s10773-019-04086-8