P. Szumniak, S. Bednarek, B. Partoens, F. M. Peeters
A novel spintronic nanodevice is proposed that is capable to manipulate the
single heavy hole spin state in a coherent manner. It can act as a single
quantum logic gate. The heavy hole spin transformations are realized by
transporting the hole around closed loops defined by metal gates deposited on
top of the nanodevice. The device exploits Dresselhaus spin orbit interaction
which translates the spatial motion of the hole into a rotation of the spin.
The proposed quantum gate operates on sub nanosecond time scales and requires
only the application of a weak static voltage which allows for addressing heavy
hole spin qubit individually. Our results are supported by quantum mechanical
time dependent calculations within the four band Luttinger Kohn model.
View original:
http://arxiv.org/abs/1202.1674
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