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Title: Semiconductor adiabatic qubits

Abstract

A quantum computing device that includes a plurality of semiconductor adiabatic qubits is described herein. The qubits are programmed with local biases and coupling terms between qubits that represent a problem of interest. The qubits are initialized by way of a tuneable parameter, a local tunnel coupling within each qubit, such that the qubits remain in a ground energy state, and that initial state is represented by the qubits being in a superposition of |0> and |1> states. The parameter is altered over time adiabatically or such that relaxation mechanisms maintain a large fraction of ground state occupation through decreasing the tunnel coupling barrier within each qubit with the appropriate schedule. The final state when tunnel coupling is effectively zero represents the solution state to the problem represented in the |0> and |1> basis, which can be accurately read at each qubit location.

Inventors:
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Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1337627
Patent Number(s):
9530873
Application Number:
14/054,659
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06N - COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Oct 15
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Carroll, Malcolm S., Witzel, Wayne, Jacobson, Noah Tobias, Ganti, Anand, Landahl, Andrew J., Lilly, Michael, Nguyen, Khoi Thi, Bishop, Nathaniel, Carr, Stephen M., Bussmann, Ezra, Nielsen, Erik, Levy, James Ewers, Blume-Kohout, Robin J., and Rahman, Rajib. Semiconductor adiabatic qubits. United States: N. p., 2016. Web.
Carroll, Malcolm S., Witzel, Wayne, Jacobson, Noah Tobias, Ganti, Anand, Landahl, Andrew J., Lilly, Michael, Nguyen, Khoi Thi, Bishop, Nathaniel, Carr, Stephen M., Bussmann, Ezra, Nielsen, Erik, Levy, James Ewers, Blume-Kohout, Robin J., & Rahman, Rajib. Semiconductor adiabatic qubits. United States.
Carroll, Malcolm S., Witzel, Wayne, Jacobson, Noah Tobias, Ganti, Anand, Landahl, Andrew J., Lilly, Michael, Nguyen, Khoi Thi, Bishop, Nathaniel, Carr, Stephen M., Bussmann, Ezra, Nielsen, Erik, Levy, James Ewers, Blume-Kohout, Robin J., and Rahman, Rajib. Tue . "Semiconductor adiabatic qubits". United States. https://www.osti.gov/servlets/purl/1337627.
@article{osti_1337627,
title = {Semiconductor adiabatic qubits},
author = {Carroll, Malcolm S. and Witzel, Wayne and Jacobson, Noah Tobias and Ganti, Anand and Landahl, Andrew J. and Lilly, Michael and Nguyen, Khoi Thi and Bishop, Nathaniel and Carr, Stephen M. and Bussmann, Ezra and Nielsen, Erik and Levy, James Ewers and Blume-Kohout, Robin J. and Rahman, Rajib},
abstractNote = {A quantum computing device that includes a plurality of semiconductor adiabatic qubits is described herein. The qubits are programmed with local biases and coupling terms between qubits that represent a problem of interest. The qubits are initialized by way of a tuneable parameter, a local tunnel coupling within each qubit, such that the qubits remain in a ground energy state, and that initial state is represented by the qubits being in a superposition of |0> and |1> states. The parameter is altered over time adiabatically or such that relaxation mechanisms maintain a large fraction of ground state occupation through decreasing the tunnel coupling barrier within each qubit with the appropriate schedule. The final state when tunnel coupling is effectively zero represents the solution state to the problem represented in the |0> and |1> basis, which can be accurately read at each qubit location.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {12}
}

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Works referenced in this record:

Few Electron Double Quantum Dots in InAs/InP Nanowire Heterostructures
journal, February 2007


Charge-State Conditional Operation of a Spin Qubit
journal, July 2011


Electron transport through double quantum dots
journal, December 2002


Fault-tolerant architecture for quantum computation using electrically controlled semiconductor spins
journal, December 2005


Theory of Quantum Annealing of an Ising Spin Glass
journal, March 2002


Spectroscopy of few-electron single-crystal silicon quantum dots
journal, May 2010


Quantum annealing with manufactured spins
journal, May 2011