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On-chip squeezed light could improve sensors

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A microchip-based way to create squeezed light could assist a range of precision measurements and provide a viable route toward real-world on-chip sensor applications and technology. Monitoring a mechanical object’s motion, even with a touch as gentle as that of light, fundamentally alters its dynamics. Squeezed light, with its quantum fluctuations below that of the vacuum field, was proposed nearly three decades ago as a way of overcoming the standard quantum limits in precision force measurements. Squeezed light was recently generated in a system of ultracold gas-phase...Read full article

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    Published: October 2013
    Glossary
    metrology
    Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and instruments, as well as the application of measurement principles in various fields. The primary objectives of metrology are to ensure accuracy, reliability, and consistency in measurements and to establish traceability to recognized standards. Metrology plays a crucial role in science, industry,...
    noise
    The unwanted and unpredictable fluctuations that distort a received signal and hence tend to obscure the desired message. Noise disturbances, which may be generated in the devices of a communications system or which may enter the system from the outside, limit the range of the system and place requirements on the signal power necessary to ensure good reception.
    quantum optics
    The area of optics in which quantum theory is used to describe light in discrete units or "quanta" of energy known as photons. First observed by Albert Einstein's photoelectric effect, this particle description of light is the foundation for describing the transfer of energy (i.e. absorption and emission) in light matter interaction.
    AmericasAmir Safavi-NaeiniCalifornia Institute of TechnologyCaltechImagingmetrologymicrochipmirrorsnoiseOpticsOskar Painterprecision measurementquantum fluctuationsquantum opticsResearch & TechnologySensors & Detectorssiliconsqueezed lightTech PulseTest & MeasurementvacuumLasers

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