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DOE OSTI · 1600305

Spin-orbit qubit using quantum dots

Jock, Ryan Michael·Rudolph, Martin·Baczewski, Andrew David·Witzel, Wayne·Carroll, Malcolm S.·Harvey-Collard, Patrick·Gamble, IV, John King·Jacobson, Noah Tobias·Mounce, Andrew·Ward, Daniel Robert
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Abstract

Methods and apparatus of quantum information processing using quantum dots are provided. Electrons from a 2DEG are confined to the quantum dots and subjected to a magnetic field having a component directed parallel to the interface. Due to interfacial asymmetries, there is created an effective magnetic field that perturbs the energies of the spin states via an interfacial spin-orbit (SO) interaction. This SO interaction is utilized to controllably produce rotations of the electronic spin state, such as X-rotations of the electronic spin state in a double quantum dot (DQD) singlet-triplet (ST) qubit. The desired state rotations are controlled solely by the use of electrical pulses.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY97 MATHEMATICS AND COMPUTING

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Jock, Ryan Michael, Rudolph, Martin, Baczewski, Andrew David, Witzel, Wayne, Carroll, Malcolm S., Harvey-Collard, Patrick, Gamble, IV, John King, Jacobson, Noah Tobias, Mounce, Andrew, Ward, Daniel Robert. 2019-11-19. Spin-orbit qubit using quantum dots. https://www.osti.gov/biblio/1600305

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