Quantum coherent devices with reduced energy dissipation

Rosen, Yaniv; Dubois, Jonathan; Holland, Eric Thomas; Horsley, Matthew A.

Title: Quantum coherent devices with reduced energy dissipation

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Abstract

The disclosed technology can be used to increase lifetimes of quantum coherent devices such as qubits including transmons and xmons and to reduce the losses in resonators. Energy stored in superconducting devices can be lost by emission of phonons that couple to the environment. Defects in one or more materials in the quantum coherent device can cause the coupling to phonons. Patterning one or more of the layers creates a phononic bandgap that reduces or eliminates the emission of the phonons to the environment. The energy then couples back to the quantum coherent device.

Inventors:: Rosen, Yaniv; Dubois, Jonathan; Holland, Eric Thomas; Horsley, Matthew A.

Issue Date:: 2020-03-10

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1637882

Patent Number(s):: 10586908

Application Number:: 16/038,096

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

G - PHYSICS G06 - COMPUTING G06N - COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L39/025 - {for Josephson devices}
H01L39/2493 - {for Josephson devices}
H01L39/223 - {Josephson-effect devices}

G - PHYSICS G06 - COMPUTING G06N - COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
G06N20/10 - using kernel methods, e.g. support vector machines [SVM]
G06N10/00 - Quantum computers, i.e. computer systems based on quantum-mechanical phenomena

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L27/18 - including components exhibiting superconductivity

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 07/17/2018

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Rosen, Yaniv, Dubois, Jonathan, Holland, Eric Thomas, and Horsley, Matthew A. Quantum coherent devices with reduced energy dissipation.  United States: N. p., 2020. 
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                    Rosen, Yaniv, Dubois, Jonathan, Holland, Eric Thomas, & Horsley, Matthew A. Quantum coherent devices with reduced energy dissipation.  United States.

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                    Rosen, Yaniv, Dubois, Jonathan, Holland, Eric Thomas, and Horsley, Matthew A. Tue .  
        "Quantum coherent devices with reduced energy dissipation".  United States.  https://www.osti.gov/servlets/purl/1637882.

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@article{osti_1637882,

  title        = {Quantum coherent devices with reduced energy dissipation},

  author       = {Rosen, Yaniv and Dubois, Jonathan and Holland, Eric Thomas and Horsley, Matthew A.},

  abstractNote = {The disclosed technology can be used to increase lifetimes of quantum coherent devices such as qubits including transmons and xmons and to reduce the losses in resonators. Energy stored in superconducting devices can be lost by emission of phonons that couple to the environment. Defects in one or more materials in the quantum coherent device can cause the coupling to phonons. Patterning one or more of the layers creates a phononic bandgap that reduces or eliminates the emission of the phonons to the environment. The energy then couples back to the quantum coherent device.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {3}

}

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