Persistent currents controlled by non-classical electromagnetic fields

• Autorzy: Dajka J. , Zipper E.
• Języki publikacji: EN

Abstrakty

EN

Mesoscopic systems and the non-classical electromagnetic fields are of central importance for quantum information processing. Our aim is to present the significant influence of the non-classical radiation on the properties of persistent currents. We study mesoscopic rings subject to both classical and non-classical electromagnetic field. Our discussion is limited to one- and two-mode fields with a prepared in a given quantum state. We show that the non-classical fields with definite phase can induce persistent currents even in the absence of classical driving. There are two qualitatively distinct classes of two-mode electromagnetic fields: separable and entangled. This is reflected in the properties of the current which e.g. become time-dependent for the fields in an entangled state. We extend our earlier work and investigate the effect of entanglement for the family of various states with various amount of entanglement: from separable to Bell states quantified by the concurrence.

Słowa kluczowe

EN

persistent current; non-classical electromagnetic field; entangled state

PL

prąd ciągły w obwodzie złożonym z elementów nadprzewodzących; stan splątany; układ mezoskopowy

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2006
• Tom: Vol. 24, No. 3
• Strony: 769--775
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Dajka J.

autor

Zipper E.

• Institute of Physics, University of Silesia, 40-007 Katowice,

Bibliografia

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