dorsal/arxiv
View SchemaDistant Entanglement of Macroscopic Gas Samples
| Authors | J. Sherson, B. Julsgaard, E. S. Polzik |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0408146 |
| URL | https://arxiv.org/abs/quant-ph/0408146 |
| DOI | 10.1007/1-4020-3283-8_24 |
Abstract
One of the main ingredients in most quantum information protocols is a reliable source of two entangled systems. Such systems have been generated experimentally several years ago for light but has only in the past few years been demonstrated for atomic systems. None of these approaches however involve two atomic systems situated in separate environments. This is necessary for the creation of entanglement over arbitrary distances which is required for many quantum information protocols such as atomic teleportation. We present an experimental realization of such distant entanglement based on an adaptation of the entanglement of macroscopic gas samples containing about 10^11 cesium atoms shown previously by our group. The entanglement is generated via the off-resonant Kerr interaction between the atomic samples and a pulse of light. The achieved entanglement distance is 0.35m but can be scaled arbitrarily. The feasibility of an implementation of various quantum information protocols using macroscopic samples of atoms has therefore been greatly increased. We also present a theoretical modeling in terms of canonical position and momentum operators X and P describing the entanglement generation and verification in presence of decoherence mechanisms.
{
"annotation_id": "f584ae6a-257e-498c-ba1c-7d6e6458ad61",
"date_created": "2026-03-02T18:02:10.053000Z",
"date_modified": "2026-03-02T18:02:10.053000Z",
"file_hash": "11bb3b0412e70a785315ce03734296f173b20869ba8905c15dff35d20e637a35",
"private": false,
"record": {
"abstract": "One of the main ingredients in most quantum information protocols is a\nreliable source of two entangled systems. Such systems have been generated\nexperimentally several years ago for light but has only in the past few years\nbeen demonstrated for atomic systems. None of these approaches however involve\ntwo atomic systems situated in separate environments. This is necessary for the\ncreation of entanglement over arbitrary distances which is required for many\nquantum information protocols such as atomic teleportation. We present an\nexperimental realization of such distant entanglement based on an adaptation of\nthe entanglement of macroscopic gas samples containing about 10^11 cesium atoms\nshown previously by our group. The entanglement is generated via the\noff-resonant Kerr interaction between the atomic samples and a pulse of light.\nThe achieved entanglement distance is 0.35m but can be scaled arbitrarily. The\nfeasibility of an implementation of various quantum information protocols using\nmacroscopic samples of atoms has therefore been greatly increased. We also\npresent a theoretical modeling in terms of canonical position and momentum\noperators X and P describing the entanglement generation and verification in\npresence of decoherence mechanisms.",
"arxiv_id": "quant-ph/0408146",
"authors": [
"J. Sherson",
"B. Julsgaard",
"E. S. Polzik"
],
"categories": [
"quant-ph"
],
"doi": "10.1007/1-4020-3283-8_24",
"title": "Distant Entanglement of Macroscopic Gas Samples",
"url": "https://arxiv.org/abs/quant-ph/0408146"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "718ab883-279b-496e-be3f-b0cc99510602",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}