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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Beat note stabilization of mode-locked lasers for quantum information processing.

R Islam, W C Campbell, T Choi

    Optics Letters
    |May 31, 2014
    PubMed
    Summary
    This summary is machine-generated.

    We stabilized a radio frequency beat note between two optical fields for coherent quantum information manipulation. This method bypasses the need for laser repetition rate stabilization, enhancing quantum bit control.

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    Area of Science:

    • Quantum Information Science
    • Atomic Physics
    • Laser Spectroscopy

    Background:

    • Coherent manipulation of quantum information is crucial for quantum computing.
    • Trapped ytterbium ions (Yb+) are promising quantum bit (qubit) platforms.
    • Precise control over optical fields is necessary for high-fidelity qubit operations.

    Purpose of the Study:

    • To develop a robust method for stabilizing optical fields for quantum information processing.
    • To enable coherent manipulation of quantum information without active laser repetition rate stabilization.
    • To implement and characterize an external stabilization scheme for trapped 171Yb+ qubits.

    Main Methods:

    • Stabilizing a radio frequency beat note between two optical fields from a single mode-locked laser.
    • Implementing an external lock to a chosen radio frequency.
    • Characterizing the scheme using two-photon stimulated Raman transitions in 171Yb+ qubits.

    Main Results:

    • Successfully stabilized the radio frequency beat note between optical fields.
    • Demonstrated coherent manipulation of quantum information using the stabilized fields.
    • Showcased the scheme's effectiveness without active laser repetition rate stabilization.

    Conclusions:

    • The developed external lock scheme provides a stable platform for coherent quantum information manipulation.
    • This method simplifies experimental requirements by eliminating the need for laser repetition rate stabilization.
    • The technique is applicable to trapped ion qubits, specifically 171Yb+, for advanced quantum operations.