کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1862940 | 1530613 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Adiabatic demagnetization and generation of entanglement in spin systems Adiabatic demagnetization and generation of entanglement in spin systems](/preview/png/1862940.png)
We study the entanglement emergence in a dipolar-coupled nuclear spin-1/2 system cooled using the adiabatic demagnetization technique. The unexpected behavior of entanglement for the next- and next–next-neighbor spins is revealed: entangled states of a spin system appear in two distinct temperature and magnetic field regions separated by a zero-concurrence area. The magnetic field dependence of the concurrence can have two maximums which positions are determined by the initial conditions and number of spins in a chain.
► We study entanglement in a spin system cooled using an adiabatic demagnetization.
► Entangled states appear in two separated regions of temperature and magnetic field.
► The adiabatic demagnetization is a way to the experimental testing of entanglement.
Journal: Physics Letters A - Volume 376, Issues 8–9, 6 February 2012, Pages 925–929