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Title: Spin-orbit qubit using quantum dots

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.

Inventors:
; ; ; ; ; ; ; ; ;
Issue Date:
Research Org.:
National Technology & Engineering Solutions of Sandia, LLC, Alburquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1600305
Patent Number(s):
10,482,388
Application Number:
16/023,211
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
DOE Contract Number:  
NA0003525
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/29/2018
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

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, and Ward, Daniel Robert. Spin-orbit qubit using quantum dots. United States: N. p., 2019. Web.
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. Spin-orbit qubit using quantum dots. United States.
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, and Ward, Daniel Robert. Tue . "Spin-orbit qubit using quantum dots". United States. https://www.osti.gov/servlets/purl/1600305.
@article{osti_1600305,
title = {Spin-orbit qubit using quantum dots},
author = {Jock, Ryan Michael and Rudolph, Martin and Baczewski, Andrew David and Witzel, Wayne and Carroll, Malcolm S. and Harvey-Collard, Patrick and Gamble, IV, John King and Jacobson, Noah Tobias and Mounce, Andrew and Ward, Daniel Robert},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {11}
}

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Works referenced in this record:

Fermionic bell-state analyzer and quantum computer using same
patent, August 2010


Quantum computer
patent, October 2002


Solid-state quantum dot devices and quantum computing using nanostructured logic gates
patent, July 2003


Semiconductor adiabatic qubits
patent, December 2016