dorsal/arxiv
View SchemaPairwise entanglement and readout of atomic-ensemble and optical wave-packet modes in traveling-wave Raman interactions
| Authors | Wojciech Wasilewski, M. G. Raymer |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0512157 |
| URL | https://arxiv.org/abs/quant-ph/0512157 |
| DOI | 10.1103/PhysRevA.73.063816 |
| Journal | Phys. Rev. A 73, 063816 (2006) |
Abstract
We analyze quantum entanglement of Stokes light and atomic electronic polarization excited during single-pass, linear-regime, stimulated Raman scattering in terms of optical wave-packet modes and atomic-ensemble spatial modes. The output of this process is confirmed to be decomposable into multiple discrete, bosonic mode pairs, each pair undergoing independent evolution into a two-mode squeezed state. For this we extend the Bloch-Messiah reduction theorem, previously known for discrete linear systems (S. L. Braunstein, Phys. Rev. A, vol. 71, 055801 (2005)). We present typical mode functions in the case of one-dimensional scattering in an atomic vapor. We find that in the absence of dispersion, one mode pair dominates the process, leading to a simple interpretation of entanglement in this continuous-variable system. However, many mode pairs are excited in the presence of dispersion-induced temporal walkoff of the Stokes, as witnessed by the photon-count statistics. We also consider the readout of the stored atomic polarization using the anti-Stokes scattering process. We prove that the readout process can also be decomposed into multiple mode pairs, each pair undergoing independent evolution analogous to a beam-splitter transformation. We show that this process can have unit efficiency under realistic experimental conditions. The shape of the output light wave packet can be predicted. In case of unit readout efficiency it contains only excitations originating from a specified atomic excitation mode.
{
"annotation_id": "66993c99-eb35-4cc2-ab10-0a088fe31b6f",
"date_created": "2026-03-02T18:02:23.950000Z",
"date_modified": "2026-03-02T18:02:23.950000Z",
"file_hash": "5b79d02a9b0a58d6406eecbd6ada589e033e266308323e6db8830e99f4a34a43",
"private": false,
"record": {
"abstract": "We analyze quantum entanglement of Stokes light and atomic electronic\npolarization excited during single-pass, linear-regime, stimulated Raman\nscattering in terms of optical wave-packet modes and atomic-ensemble spatial\nmodes. The output of this process is confirmed to be decomposable into multiple\ndiscrete, bosonic mode pairs, each pair undergoing independent evolution into a\ntwo-mode squeezed state. For this we extend the Bloch-Messiah reduction\ntheorem, previously known for discrete linear systems (S. L. Braunstein, Phys.\nRev. A, vol. 71, 055801 (2005)). We present typical mode functions in the case\nof one-dimensional scattering in an atomic vapor. We find that in the absence\nof dispersion, one mode pair dominates the process, leading to a simple\ninterpretation of entanglement in this continuous-variable system. However,\nmany mode pairs are excited in the presence of dispersion-induced temporal\nwalkoff of the Stokes, as witnessed by the photon-count statistics. We also\nconsider the readout of the stored atomic polarization using the anti-Stokes\nscattering process. We prove that the readout process can also be decomposed\ninto multiple mode pairs, each pair undergoing independent evolution analogous\nto a beam-splitter transformation. We show that this process can have unit\nefficiency under realistic experimental conditions. The shape of the output\nlight wave packet can be predicted. In case of unit readout efficiency it\ncontains only excitations originating from a specified atomic excitation mode.",
"arxiv_id": "quant-ph/0512157",
"authors": [
"Wojciech Wasilewski",
"M. G. Raymer"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.063816",
"journal_ref": "Phys. Rev. A 73, 063816 (2006)",
"title": "Pairwise entanglement and readout of atomic-ensemble and optical wave-packet modes in traveling-wave Raman interactions",
"url": "https://arxiv.org/abs/quant-ph/0512157"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "4e9d4076-4c80-46e1-81b4-ca31175ba1a2",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}