Skip to Content
Find More Like This
Return to Search

Scalable quantum computer architecture with coupled donor-quantum dot qubits

United States Patent

8,816,325
August 26, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
A quantum bit computing architecture includes a plurality of single spin memory donor atoms embedded in a semiconductor layer, a plurality of quantum dots arranged with the semiconductor layer and aligned with the donor atoms, wherein a first voltage applied across at least one pair of the aligned quantum dot and donor atom controls a donor-quantum dot coupling. A method of performing quantum computing in a scalable architecture quantum computing apparatus includes arranging a pattern of single spin memory donor atoms in a semiconductor layer, forming a plurality of quantum dots arranged with the semiconductor layer and aligned with the donor atoms, applying a first voltage across at least one aligned pair of a quantum dot and donor atom to control a donor-quantum dot coupling, and applying a second voltage between one or more quantum dots to control a Heisenberg exchange J coupling between quantum dots and to cause transport of a single spin polarized electron between quantum dots.
Schenkel; Thomas (San Francisco, CA), Lo; Cheuk Chi (Berkeley, CA), Weis; Christoph (Berkeley, CA), Lyon; Stephen (Cranbury, NJ), Tyryshkin; Alexei (Yardley, PA), Bokor; Jeffrey (Oakland, CA)
The Regents of the University of California (Oakland, CA)
13/ 645,291
20130087766
October 4, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Contract No. DE-AC02-05CH11231 awarded by the United States Department of Energy to The Regents of the University of California for management and operation of the Lawrence Berkeley National Laboratory. This invention was also made with U.S. Government support under the National Security Agency Contract No. 100000080295. The government has certain rights in this invention.