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Creators/Authors contains: "King, P. J."

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review D)
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Classical and Quantum Gravity)
    Abstract Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs. 
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  3. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review X)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Applied Physics Letters)
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  5. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review D)
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  7. ; ; ; ; ; ; ; ; ; ; et al (, Science)
    null (Ed.)
    The motion of a mechanical object, even a human-sized object, should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult because the thermal environment masks any quantum signature of the object’s motion. The thermal environment also masks the effects of proposed modifications of quantum mechanics at large mass scales. We prepared the center-of-mass motion of a 10-kilogram mechanical oscillator in a state with an average phonon occupation of 10.8. The reduction in temperature, from room temperature to 77 nanokelvin, is commensurate with an 11 orders-of-magnitude suppression of quantum back-action by feedback and a 13 orders-of-magnitude increase in the mass of an object prepared close to its motional ground state. Our approach will enable the possibility of probing gravity on massive quantum systems. 
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  8. ; ; ; ; ; ; ; ; ; ; et al (, Classical and Quantum Gravity)
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  9. ; ; ; ; ; ; ; ; ; ; et al (, Classical and Quantum Gravity)
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  10. ; ; ; ; ; ; ; ; ; ; et al (, Classical and Quantum Gravity)
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