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Quantum nondemolition measurements.

V B Braginsky, Y I Vorontsov, K S Thorne

    Science (New York, N.Y.)
    |August 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Future gravitational-wave antennas require precise measurements of vibrations. New electronic techniques enable quantum nondemolition measurements, allowing repeated observation without disturbing the system.

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    Area of Science:

    • Physics
    • Astrophysics
    • Quantum Mechanics

    Background:

    • Future gravitational-wave antennas necessitate measuring vibrations with extreme precision (10^-19 cm).
    • These measurements must adhere to quantum mechanical principles, where the system's state is preserved.

    Purpose of the Study:

    • To describe novel electronic techniques for quantum nondemolition measurements.
    • To explain the underlying theory for these advanced measurement protocols.

    Main Methods:

    • Development of specialized electronic techniques for high-precision vibration measurement.
    • Theoretical framework for quantum nondemolition measurement in the context of gravitational-wave detection.

    Main Results:

    • Successful identification of electronic techniques enabling quantum nondemolition measurements.

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  • Established theoretical basis for applying these techniques to sensitive instruments.

    • Conclusions:

    • Quantum nondemolition measurements are crucial for future gravitational-wave detectors.
    • These techniques have potential applications beyond gravitational-wave science.