dorsal/arxiv
View SchemaElectron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields
| Authors | D. I. Tsomokos, C. C. Chong, A. Vourdas |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0502113 |
| URL | https://arxiv.org/abs/quant-ph/0502113 |
| DOI | 10.1088/1464-4266/7/6/R01 |
| Journal | Journal of Optics B, vol 7, p R73 (2005) |
Abstract
The interaction of mesoscopic interference devices with nonclassical electromagnetic fields is studied. The external quantum fields induce a phase factor on the electric charges. This phase factor, which is a generalization of the standard Aharonov-Bohm phase factor, is in the case of nonclassical electromagnetic fields a quantum mechanical operator. Its expectation value depends on the density matrix describing the nonclassical photons and determines the interference. Several examples are discussed, which show that the quantum noise of the nonclassical photons destroys slightly the electron interference fringes. An interesting application arises in the context of distant electron interference devices, irradiated with entangled photons. In this case the interfering electrons in the two devices become entangled. The same ideas are applied in the context of SQUID rings irradiated with nonclassical electromagnetic fields. It is shown that the statistics of the Cooper pairs tunneling through the Josephson junction depend on the statistics of the photons.
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"abstract": "The interaction of mesoscopic interference devices with nonclassical\nelectromagnetic fields is studied. The external quantum fields induce a phase\nfactor on the electric charges. This phase factor, which is a generalization of\nthe standard Aharonov-Bohm phase factor, is in the case of nonclassical\nelectromagnetic fields a quantum mechanical operator. Its expectation value\ndepends on the density matrix describing the nonclassical photons and\ndetermines the interference. Several examples are discussed, which show that\nthe quantum noise of the nonclassical photons destroys slightly the electron\ninterference fringes. An interesting application arises in the context of\ndistant electron interference devices, irradiated with entangled photons. In\nthis case the interfering electrons in the two devices become entangled. The\nsame ideas are applied in the context of SQUID rings irradiated with\nnonclassical electromagnetic fields. It is shown that the statistics of the\nCooper pairs tunneling through the Josephson junction depend on the statistics\nof the photons.",
"arxiv_id": "quant-ph/0502113",
"authors": [
"D. I. Tsomokos",
"C. C. Chong",
"A. Vourdas"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1088/1464-4266/7/6/R01",
"journal_ref": "Journal of Optics B, vol 7, p R73 (2005)",
"title": "Electron interference in mesoscopic devices in the presence of nonclassical electromagnetic fields",
"url": "https://arxiv.org/abs/quant-ph/0502113"
},
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