All-Electrical Quantum Computation with Mobile Spin Qubits

Details All-Electrical Quantum Computation with Mobile Spin Qubits All-Electrical Quantum Computation with Mobile Spin Qubits

2003-06-16

arxiv.org/abs/cond-mat/0306401v1

Phys. Rev. B 69, 245422 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 6 figs, RevTeX4

Scientific paper

10.1103/PhysRevB.69.245422

We describe and discuss a solid state proposal for quantum computation with mobile spin qubits in one-dimensional systems, based on recent advances in spintronics. Static electric fields are used to implement a universal set of quantum gates, via the spin-orbit and exchange couplings. Initialization and measurement can be performed either by spin injection from/to ferromagnets, or by using spin filters and mesoscopic spin polarizing beam-splitters. The vulnerability of this proposal to various sources of error is estimated by numerical simulations. We also assess the suitability of various materials currently used in nanotechnology for an actual implementation of our model.

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