dorsal/arxiv
View SchemaDephasing due to Which Path Detector
| Authors | E. Buks, R. Schuster, M. Heiblum, D. Mahalu, V. Umansky |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9709022 |
| URL | https://arxiv.org/abs/quant-ph/9709022 |
| DOI | 10.1016/S0921-4526(98)00118-5 |
Abstract
We study dephasing of electrons induced by a which path detector and thus verify Bohr's complementarity principle for fermions. We utilize a double path interferometer with two slits, with one slit being replaced by a coherent quantum dot (QD). A short one dimensional channel, in the form of a quantum point contact (QPC), in close proximity to the QD, serves as a which path detector. We find that by varying the properties of the QPC detector we affect the visibility of the interference, inducing thus dephasing. We develop a simple model to explain the dephasing due to the nearby detector and find good agreement with the experiment.
{
"annotation_id": "9be1ed10-81fb-4921-8133-fe2ab597329e",
"date_created": "2026-03-02T18:02:41.651000Z",
"date_modified": "2026-03-02T18:02:41.651000Z",
"file_hash": "eae607c67f13464f98f9e7e31a4fa2dc838830ce4f83148142fc8b0fc919b730",
"private": false,
"record": {
"abstract": "We study dephasing of electrons induced by a which path detector and thus\nverify Bohr\u0027s complementarity principle for fermions. We utilize a double path\ninterferometer with two slits, with one slit being replaced by a coherent\nquantum dot (QD). A short one dimensional channel, in the form of a quantum\npoint contact (QPC), in close proximity to the QD, serves as a which path\ndetector. We find that by varying the properties of the QPC detector we affect\nthe visibility of the interference, inducing thus dephasing. We develop a\nsimple model to explain the dephasing due to the nearby detector and find good\nagreement with the experiment.",
"arxiv_id": "quant-ph/9709022",
"authors": [
"E. Buks",
"R. Schuster",
"M. Heiblum",
"D. Mahalu",
"V. Umansky"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1016/S0921-4526(98)00118-5",
"title": "Dephasing due to Which Path Detector",
"url": "https://arxiv.org/abs/quant-ph/9709022"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "4bddbf94-2b02-4257-8659-9a3f6e811386",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}