Interplay between Zeeman coupling and swap action in spin-based quantum computer models: Error correction in inhomogeneous magnetic fields
Physical Review Letters, 2001•APS
We consider theoretically the interplay between Zeeman coupling and exchange-induced
swap action in spin-based quantum dot quantum computer models in the presence of
inhomogeneous magnetic fields, which are invariably present in real systems. We estimate
quantitatively swap errors caused by the inhomogeneous field, establishing that error
correction would, in principle, be possible in the presence of nonuniform magnetic fields in
realistic structures.
swap action in spin-based quantum dot quantum computer models in the presence of
inhomogeneous magnetic fields, which are invariably present in real systems. We estimate
quantitatively swap errors caused by the inhomogeneous field, establishing that error
correction would, in principle, be possible in the presence of nonuniform magnetic fields in
realistic structures.
Abstract
We consider theoretically the interplay between Zeeman coupling and exchange-induced swap action in spin-based quantum dot quantum computer models in the presence of inhomogeneous magnetic fields, which are invariably present in real systems. We estimate quantitatively swap errors caused by the inhomogeneous field, establishing that error correction would, in principle, be possible in the presence of nonuniform magnetic fields in realistic structures.
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