dorsal/arxiv
View SchemaAll (qubit) decoherences: Complete characterization and physical implementation
| Authors | Mario Ziman, Vladimir Buzek |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0505040 |
| URL | https://arxiv.org/abs/quant-ph/0505040 |
| DOI | 10.1103/PhysRevA.72.022110 |
| Journal | Phys.Rev.A 72, 022110 (2005) |
Abstract
We investigate decoherence channels that are modelled as a sequence of collisions of a quantum system (e.g., a qubit) with particles (e.g., qubits) of the environment. We show that collisions induce decoherence when a bi-partite interaction between the system qubit and an environment (reservoir) qubit is described by the controlled-U unitary transformation (gate). We characterize decoherence channels and in the case of a qubit we specify the most general decoherence channel and derive a corresponding master equation. Finally, we analyze entanglement that is generated during the process of decoherence between the system and its environment.
{
"annotation_id": "6f8c2b9e-c16f-44b4-aedb-b513fa245a4f",
"date_created": "2026-03-02T18:02:16.663000Z",
"date_modified": "2026-03-02T18:02:16.663000Z",
"file_hash": "85cdd8ea99646ff700fbe6bfd173bc992fb648a9584d63ab9cf2fc77b27428ca",
"private": false,
"record": {
"abstract": "We investigate decoherence channels that are modelled as a sequence of\ncollisions of a quantum system (e.g., a qubit) with particles (e.g., qubits) of\nthe environment. We show that collisions induce decoherence when a bi-partite\ninteraction between the system qubit and an environment (reservoir) qubit is\ndescribed by the controlled-U unitary transformation (gate). We characterize\ndecoherence channels and in the case of a qubit we specify the most general\ndecoherence channel and derive a corresponding master equation. Finally, we\nanalyze entanglement that is generated during the process of decoherence\nbetween the system and its environment.",
"arxiv_id": "quant-ph/0505040",
"authors": [
"Mario Ziman",
"Vladimir Buzek"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.72.022110",
"journal_ref": "Phys.Rev.A 72, 022110 (2005)",
"title": "All (qubit) decoherences: Complete characterization and physical implementation",
"url": "https://arxiv.org/abs/quant-ph/0505040"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "b074d05f-4e38-40de-91cf-ad2e0da07a83",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}