dorsal/arxiv
View SchemaAuto-compensating differential phase shift quantum key distribution
| Authors | Xiaohong Han, Guang Wu, Chunyuan Zhou, Heping Zeng |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0501025 |
| URL | https://arxiv.org/abs/quant-ph/0501025 |
Abstract
We propose an auto-compensating differential phase shift scheme for quantum key distribution with a high key-creation efficiency, which skillfully makes use of automatic alignment of the photon polarization states in optical fiber with modified Michelson interferometers composed of unequal arms with Faraday mirrors at the ends. The Faraday-mirrors-based Michelson interferometers not only function as pulse splitters, but also enable inherent compensation of polarization mode dispersion in the optic-fiber paths at both Alice's and Bob's sites. The sequential pulses encoded by differential phase shifts pass through the quantum channel with the same polarization states, resulting in a stable key distribution immune to the polarization mode dispersion in the quantum channel. Such a system features perfect stability and higher key creation efficiency over traditional schemes.
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"date_created": "2026-03-02T18:02:13.511000Z",
"date_modified": "2026-03-02T18:02:13.511000Z",
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"abstract": "We propose an auto-compensating differential phase shift scheme for quantum\nkey distribution with a high key-creation efficiency, which skillfully makes\nuse of automatic alignment of the photon polarization states in optical fiber\nwith modified Michelson interferometers composed of unequal arms with Faraday\nmirrors at the ends. The Faraday-mirrors-based Michelson interferometers not\nonly function as pulse splitters, but also enable inherent compensation of\npolarization mode dispersion in the optic-fiber paths at both Alice\u0027s and Bob\u0027s\nsites. The sequential pulses encoded by differential phase shifts pass through\nthe quantum channel with the same polarization states, resulting in a stable\nkey distribution immune to the polarization mode dispersion in the quantum\nchannel. Such a system features perfect stability and higher key creation\nefficiency over traditional schemes.",
"arxiv_id": "quant-ph/0501025",
"authors": [
"Xiaohong Han",
"Guang Wu",
"Chunyuan Zhou",
"Heping Zeng"
],
"categories": [
"quant-ph"
],
"title": "Auto-compensating differential phase shift quantum key distribution",
"url": "https://arxiv.org/abs/quant-ph/0501025"
},
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"source": {
"execution_id": "093f5901-b0c0-4f6e-909c-b81a0216a623",
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"type": "Model",
"variant": "snapshot-2026-03-01",
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