Coherent control of a single electron spin with electric fields

Abstract

Manipulation of single spins is essential for spin-based quantum information processing. Electrical control instead of magnetic control is particularly appealing for this purpose, since electric fields are easy to generate locally on-chip. We experimentally realize coherent control of a single electron spin in a quantum dot using an oscillating electric field generated by a local gate. The electric field induces coherent transitions (Rabi oscillations) between spin-up and spin-down with pi/2 rotations as fast as ~55ns. Our analysis indicates that the electrically-induced spin transitions are mediated by the spin-orbit interaction. Taken together with the recently demonstrated coherent exchange of two neighboring spins, our results demonstrate the feasibility of fully electrical manipulation of spin qubits.

Total 24 pages, 10 pages main text, 4 figures, 10 pages supplementary material

References in corpus (2)

• Single-shot read-out of an individual electron spin in a quantum dot
• Universal phase shift and non-exponential decay of driven single-spin oscillations

Cited by in corpus (8)

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• Using spin bias to manipulate and measure quantum spin in quantum dots
• Spin rotations induced by electron running on closed trajectories in gated semiconductor nanodevices
• Coherent spin rotations in open driven double quantum dots
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
• Theory of spin qubits in nanostructures