Atom interferometry with quantized light pulses
arXiv:2105.00814 · doi:10.1063/5.0048806
Abstract
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.
9 pages, 3 figures
References in corpus (7)
- Quantum Test of the Universality of Free Fall
- Atom interferometry in an optical cavity
- Squeezing on momentum states for atom interferometry
- Heterodyne non-demolition measurements on cold atomic samples: towards the preparation of non-classical states for atom interferometry
- Information recycling beam-splitters for atom-interferometry with enhanced sensitivity
- Light shifts in atomic Bragg diffraction
- Atomic Raman scattering: Third-order diffraction in a double geometry