dorsal/arxiv
View SchemaA simple model of quantum trajectories
| Authors | Todd A. Brun |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0108132 |
| URL | https://arxiv.org/abs/quant-ph/0108132 |
| DOI | 10.1119/1.1475328 |
| Journal | Am. J. Phys. 70, 719-737 (2002). |
Abstract
Quantum trajectory theory, developed largely in the quantum optics community to describe open quantum systems subjected to continuous monitoring, has applications in many areas of quantum physics. In this paper I present a simple model, using two-level quantum systems (q-bits), to illustrate the essential physics of quantum trajectories and how different monitoring schemes correspond to different ``unravelings'' of a mixed state master equation. I also comment briefly on the relationship of the theory to the Consistent Histories formalism and to spontaneous collapse models.
{
"annotation_id": "962875f9-3627-4d85-982b-75547b36eacc",
"date_created": "2026-03-02T18:01:45.407000Z",
"date_modified": "2026-03-02T18:01:45.407000Z",
"file_hash": "daded09af8ae2ed2ced85f090c04088141ac2655460539b3656c965510ee096a",
"private": false,
"record": {
"abstract": "Quantum trajectory theory, developed largely in the quantum optics community\nto describe open quantum systems subjected to continuous monitoring, has\napplications in many areas of quantum physics. In this paper I present a simple\nmodel, using two-level quantum systems (q-bits), to illustrate the essential\nphysics of quantum trajectories and how different monitoring schemes correspond\nto different ``unravelings\u0027\u0027 of a mixed state master equation. I also comment\nbriefly on the relationship of the theory to the Consistent Histories formalism\nand to spontaneous collapse models.",
"arxiv_id": "quant-ph/0108132",
"authors": [
"Todd A. Brun"
],
"categories": [
"quant-ph"
],
"doi": "10.1119/1.1475328",
"journal_ref": "Am. J. Phys. 70, 719-737 (2002).",
"title": "A simple model of quantum trajectories",
"url": "https://arxiv.org/abs/quant-ph/0108132"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "24796129-3822-42b1-bdc4-3377fae5b0bb",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}