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Metrology of Quantum Control and Measurement in Superconducting Qubits.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Metrology of Quantum Control and Measurement in Superconducting Qubits./
Author:	Chen, Zijun.
Description:	1 online resource (241 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 79-10, Section: B.
Contained By:	Dissertations Abstracts International79-10B.
Subject:	Physics. -
Online resource:	click for full text (PQDT)
ISBN:	9780355736373

Metrology of Quantum Control and Measurement in Superconducting Qubits.
Chen, Zijun.

Metrology of Quantum Control and Measurement in Superconducting Qubits. - 1 online resource (241 pages)

Source: Dissertations Abstracts International, Volume: 79-10, Section: B.

Thesis (Ph.D.)--University of California, Santa Barbara, 2018.

Includes bibliographical references

Quantum computers have the potential to solve problems which are classically intractable. Superconducting qubits present a promising path to building such a computer. Recent experiments with these qubits have demonstrated the principles of quantum error correction, quantum simulation, quantum annealing, and more. Current research with superconducting qubits is focused on two primary goals: creating a fully fault tolerant logical qubit out of many physical qubits using surface code error correction, and demonstrating an exponential speedup over any classical computer for a well-defined computational problem. To achieve either of these goals requires high precision control of three components: single qubit gates, two qubit gates, and qubit measurement. In this thesis, we use randomized benchmarking to characterize single qubit gates with 99.95% fidelity and two qubit gates wiht 99.5% fidelity in superconducting transmon qubits. In addition, we use standard decoherence measurements as well as newly developed extensions of randomized benchmarking to determine the limiting sources of error. Finally, we explore the surprisingly complicated dynamics of measuring the transmon state through a coupled resonator, and show that fully understanding this process requires breaking a few "standard" assumptions.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9780355736373Subjects--Topical Terms:

564049
Physics.
Subjects--Index Terms:

MetrologyIndex Terms--Genre/Form:

554714
Electronic books.

Metrology of Quantum Control and Measurement in Superconducting Qubits.
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500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Martinis, John M.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2018.
504 $a Includes bibliographical references
520 $a Quantum computers have the potential to solve problems which are classically intractable. Superconducting qubits present a promising path to building such a computer. Recent experiments with these qubits have demonstrated the principles of quantum error correction, quantum simulation, quantum annealing, and more. Current research with superconducting qubits is focused on two primary goals: creating a fully fault tolerant logical qubit out of many physical qubits using surface code error correction, and demonstrating an exponential speedup over any classical computer for a well-defined computational problem. To achieve either of these goals requires high precision control of three components: single qubit gates, two qubit gates, and qubit measurement. In this thesis, we use randomized benchmarking to characterize single qubit gates with 99.95% fidelity and two qubit gates wiht 99.5% fidelity in superconducting transmon qubits. In addition, we use standard decoherence measurements as well as newly developed extensions of randomized benchmarking to determine the limiting sources of error. Finally, we explore the surprisingly complicated dynamics of measuring the transmon state through a coupled resonator, and show that fully understanding this process requires breaking a few "standard" assumptions.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Physics. $3 564049
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653 $a Metrology
653 $a Quantum computing
653 $a Quantum control
653 $a Quantum measurement
653 $a Superconducting qubits
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