Preparation of arbitrary quantum states with regular $P$~functions
| Autor: | Kühn, B., Vogel, W. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 98, 053807 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.98.053807 |
| Popis: | We propose a quantum optical device to experimentally realize quantum processes, which perform the regularization of the---in general highly singular---Glauber-Sudarshan $P$~functions of arbitrary quantum states before their application and/or measurement. This allows us to produce a broad class of nonclassical states with regular $P$~functions, also called nonclassicality quasiprobabilities. For this purpose, the input states are combined on highly transmissive beam splitters with specific Gaussian or non-Gaussian classical states. We study both balanced and unbalanced homodyne detections for the direct sampling of the output states of the implemented processes, which requires no further regularization or state-reconstruction. By numerical simulations we demonstrate the feasibility of our approach and we outline the generalization to multimode light. Comment: 13 pages, 7 figures |
| Databáze: | arXiv |
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