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Entanglement of systems of dipolar coupled nuclear spins at the adiabatic demagnetization

Описание

Тип публикации: статья из журнала

Год издания: 2009

Идентификатор DOI: 10.1088/0953-8984/21/2/025601

Ключевые слова: Demagnetization, Magnetic fields, A planes, Adiabatic demagnetizations, Dipolar coupled nuclear spins, External magnetic fields, Larmor frequencies, Local dipolar fields, Numerical simulations, One-dimensional, Rotating reference frames, Space dimensions, Spin chains, Spin clusters, Spin dynamics

Аннотация: We consider the adiabatic demagnetization in the rotating reference frame (ADRF) of a system of dipolar coupled nuclear spins s = 1/2 in an external magnetic field. The demagnetization starts with the offset of the external magnetic field (in frequency units) from the Larmor frequency being several times greater than the local dipoПоказать полностьюlar field. For different subsystem sizes, we have found from numerical simulations the temperatures at which subsystems of a one-dimensional nine-spin chain and a plane nine-spin cluster become entangled. These temperatures are of the order of microkelvins and are almost independent of the subsystem size. There is a weak dependence of the temperature on the space dimension of the system.

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Издание

Журнал: JOURNAL OF PHYSICS-CONDENSED MATTER

Выпуск журнала: Vol. 21, Is. 2

ISSN журнала: 09538984

Место издания: BRISTOL

Издатель: IOP PUBLISHING LTD

Персоны

  • Doronin S.I. (Institute of Problems of Chemical Physics,Russian Academy of Sciences)
  • Fel'Dman E.B. (Institute of Problems of Chemical Physics,Russian Academy of Sciences)
  • Pyrkov A.N. (Institute of Problems of Chemical Physics,Russian Academy of Sciences)
  • Kucherov M.M. (Siberian Federal University)

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