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Scalable quantum computer architecture with coupled donor-quantum dot qubits

Patent ·
OSTI ID:1150828
; ; ; ; ;
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.
Research Organization:
LBNL (Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States))
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
8,816,325
Application Number:
13/645,291
OSTI ID:
1150828
Country of Publication:
United States
Language:
English

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