| 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. |
| Filed: 6/29/2018 |
| Application Number: 16/23211 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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