Purdue University Graduate School
Browse

File(s) under embargo

4

month(s)

5

day(s)

until file(s) become available

A Radio-Frequency Synchronization System for Fiber-Optic Quantum Networks

thesis
posted on 2024-02-29, 13:31 authored by Stephen Donahue ChapmanStephen Donahue Chapman

This thesis discusses the use of a fiber optic system to synchronize GHz frequency radio-frequency signals over distances of up to 5 km and its future applications in quantum communications. The stability of the synchronization is assessed by an ‘identity gate’, where each radio-frequency signal drives a phase modulator, and the frequency profile of a continuous wave laser sent through both modulators indicates the stability of the RF signals relative to one another. Experimental results indicate that 19 GHz signals synchronized over 5.5 km drifted less than 1 ps over 30 minutes. This is superior to the radio-frequency synthesizers’ built in synchronization method and to other commonly used protocols. To illustrate an application, the system was employed in a quantum nonlocal modulation cancellation experiment. Joint spectral characterization of the biphotons shows that this synchronization scheme can be used for nodes in a quantum communications network. More specifically, possible future applications of this technology include use in a photonic quantum local area network at Oak Ridge National Laboratories.

History

Degree Type

  • Master of Science in Electrical and Computer Engineering

Department

  • Electrical and Computer Engineering

Campus location

  • West Lafayette

Advisor/Supervisor/Committee Chair

Andrew M. Weiner

Additional Committee Member 2

Jason D. McKinney

Additional Committee Member 3

Joseph M. Lukens

Additional Committee Member 4

Sunil Bhave

Usage metrics

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC