Atom interferometry with quantized light pulses
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2021
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| _version_ | 1866916133853986816 |
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| author | Soukup, Katharina Di Pumpo, Fabio Asano, Tobias Schleich, Wolfgang P. Giese, Enno |
| author_facet | Soukup, Katharina Di Pumpo, Fabio Asano, Tobias Schleich, Wolfgang P. Giese, Enno |
| contents | The far-field patterns of atoms diffracted from a classical light field, or from a quantum one in a photon-number state are identical. On the other hand, diffraction from a field in a coherent state, which shares many properties with classical light, displays a completely different behavior. We show that in contrast to the diffraction patterns, the interference signal of an atom interferometer with light-pulse beam splitters and mirrors in intense coherent states does approach the limit of classical fields. However, low photon numbers reveal the granular structure of light, leading to a reduced visibility since Welcher-Weg (which-way) information is encoded into the field. We discuss this effect for a single photon-number state as well as a superposition of two such states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2105_00814 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Atom interferometry with quantized light pulses Soukup, Katharina Di Pumpo, Fabio Asano, Tobias Schleich, Wolfgang P. Giese, Enno Quantum Physics Atomic Physics The far-field patterns of atoms diffracted from a classical light field, or from a quantum one in a photon-number state are identical. On the other hand, diffraction from a field in a coherent state, which shares many properties with classical light, displays a completely different behavior. We show that in contrast to the diffraction patterns, the interference signal of an atom interferometer with light-pulse beam splitters and mirrors in intense coherent states does approach the limit of classical fields. However, low photon numbers reveal the granular structure of light, leading to a reduced visibility since Welcher-Weg (which-way) information is encoded into the field. We discuss this effect for a single photon-number state as well as a superposition of two such states. |
| title | Atom interferometry with quantized light pulses |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2105.00814 |