Precision measurement systems with relevance to frequency metrology and quantum readout techniques

Romain Bara-Maillet

    Research output: ThesisDoctoral Thesis

    462 Downloads (Pure)

    Abstract

    This dissertation investigates techniques employed in the field of frequency metrology and the wider area of experimental physics, with applications towards engineered quantum systems. It covers the conception, development and characterisation of passive and active devices and readout systems, with a primary emphasis on phase noise measurement systems and methodologies for device characterisation up to the millimetre wave regime. We demonstrated how critical the intrinsic noise of active devices can be, most notably in the development of cryogenic sapphire oscillators and Maser frequency standards. The impact of device noise on frequency stability was explored, providing insights on approaches to improving performance.

    Precision electromagnetic measurement techniques used in the characterisation of dielectric materials are also studied. The next generation of stable cryogenic oscillator technologies could be enhanced through the application of new materials with favourable electromagnetic and cryogenic properties. The use of a perturbative cavity measurement helped identify diamond as a potential dielectric material for future oscillators.

    Ultimately the techniques developed and used throughout the thesis have been applied to enhance the readout capabilities of quantum-bit platforms that are used in quantum computing systems. Investigations were carried on both the control and readout of qubits viathe noise evaluation of waveform generators such as DACs and voltage sources. Readout sensitivity investigations also lead to the design of a cryogenic low noise amplification system.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Publication statusUnpublished - Dec 2015

    Fingerprint

    metrology
    cryogenics
    readout
    oscillators
    electromagnetic measurement
    frequency standards
    frequency stability
    theses
    electromagnetic properties
    quantum computation
    masers
    noise measurement
    low noise
    millimeter waves
    waveforms
    sapphire
    generators
    platforms
    diamonds
    methodology

    Cite this

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    title = "Precision measurement systems with relevance to frequency metrology and quantum readout techniques",
    abstract = "This dissertation investigates techniques employed in the field of frequency metrology and the wider area of experimental physics, with applications towards engineered quantum systems. It covers the conception, development and characterisation of passive and active devices and readout systems, with a primary emphasis on phase noise measurement systems and methodologies for device characterisation up to the millimetre wave regime. We demonstrated how critical the intrinsic noise of active devices can be, most notably in the development of cryogenic sapphire oscillators and Maser frequency standards. The impact of device noise on frequency stability was explored, providing insights on approaches to improving performance.Precision electromagnetic measurement techniques used in the characterisation of dielectric materials are also studied. The next generation of stable cryogenic oscillator technologies could be enhanced through the application of new materials with favourable electromagnetic and cryogenic properties. The use of a perturbative cavity measurement helped identify diamond as a potential dielectric material for future oscillators. Ultimately the techniques developed and used throughout the thesis have been applied to enhance the readout capabilities of quantum-bit platforms that are used in quantum computing systems. Investigations were carried on both the control and readout of qubits viathe noise evaluation of waveform generators such as DACs and voltage sources. Readout sensitivity investigations also lead to the design of a cryogenic low noise amplification system.",
    keywords = "Phase noise, Millimetre wave, Cryogenic oscillators, Precision measurement, Microwave design, Low noise amplifier, Material characterisation, Readout systems",
    author = "Romain Bara-Maillet",
    year = "2015",
    month = "12",
    language = "English",

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    Precision measurement systems with relevance to frequency metrology and quantum readout techniques. / Bara-Maillet, Romain.

    2015.

    Research output: ThesisDoctoral Thesis

    TY - THES

    T1 - Precision measurement systems with relevance to frequency metrology and quantum readout techniques

    AU - Bara-Maillet, Romain

    PY - 2015/12

    Y1 - 2015/12

    N2 - This dissertation investigates techniques employed in the field of frequency metrology and the wider area of experimental physics, with applications towards engineered quantum systems. It covers the conception, development and characterisation of passive and active devices and readout systems, with a primary emphasis on phase noise measurement systems and methodologies for device characterisation up to the millimetre wave regime. We demonstrated how critical the intrinsic noise of active devices can be, most notably in the development of cryogenic sapphire oscillators and Maser frequency standards. The impact of device noise on frequency stability was explored, providing insights on approaches to improving performance.Precision electromagnetic measurement techniques used in the characterisation of dielectric materials are also studied. The next generation of stable cryogenic oscillator technologies could be enhanced through the application of new materials with favourable electromagnetic and cryogenic properties. The use of a perturbative cavity measurement helped identify diamond as a potential dielectric material for future oscillators. Ultimately the techniques developed and used throughout the thesis have been applied to enhance the readout capabilities of quantum-bit platforms that are used in quantum computing systems. Investigations were carried on both the control and readout of qubits viathe noise evaluation of waveform generators such as DACs and voltage sources. Readout sensitivity investigations also lead to the design of a cryogenic low noise amplification system.

    AB - This dissertation investigates techniques employed in the field of frequency metrology and the wider area of experimental physics, with applications towards engineered quantum systems. It covers the conception, development and characterisation of passive and active devices and readout systems, with a primary emphasis on phase noise measurement systems and methodologies for device characterisation up to the millimetre wave regime. We demonstrated how critical the intrinsic noise of active devices can be, most notably in the development of cryogenic sapphire oscillators and Maser frequency standards. The impact of device noise on frequency stability was explored, providing insights on approaches to improving performance.Precision electromagnetic measurement techniques used in the characterisation of dielectric materials are also studied. The next generation of stable cryogenic oscillator technologies could be enhanced through the application of new materials with favourable electromagnetic and cryogenic properties. The use of a perturbative cavity measurement helped identify diamond as a potential dielectric material for future oscillators. Ultimately the techniques developed and used throughout the thesis have been applied to enhance the readout capabilities of quantum-bit platforms that are used in quantum computing systems. Investigations were carried on both the control and readout of qubits viathe noise evaluation of waveform generators such as DACs and voltage sources. Readout sensitivity investigations also lead to the design of a cryogenic low noise amplification system.

    KW - Phase noise

    KW - Millimetre wave

    KW - Cryogenic oscillators

    KW - Precision measurement

    KW - Microwave design

    KW - Low noise amplifier

    KW - Material characterisation

    KW - Readout systems

    M3 - Doctoral Thesis

    ER -