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Title: Quantum coherent devices with reduced energy dissipation

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:
; ; ;
Issue Date:
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
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. Web.
Rosen, Yaniv, Dubois, Jonathan, Holland, Eric Thomas, & Horsley, Matthew A. Quantum coherent devices with reduced energy dissipation. United States.
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.
@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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Works referenced in this record:

Phononic crystal devices
patent, January 2012