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AUTHOR

La Rosa

showing 2 related works from this author

Increasing the Astrophysical Reach of the Advanced Virgo Detector via the Application of Squeezed Vacuum States of Light

2019

Current interferometric gravitational-wave detectors are limited by quantum noise over a wide range of their measurement bandwidth. One method to overcome the quantum limit is the injection of squeezed vacuum states of light into the interferometer's dark port. Here, we report on the successful application of this quantum technology to improve the shot noise limited sensitivity of the Advanced Virgo gravitational-wave detector. A sensitivity enhancement of up to 3.2±0.1 dB beyond the shot noise limit is achieved. This nonclassical improvement corresponds to a 5%-8% increase of the binary neutron star horizon. The squeezing injection was fully automated and over the first 5 months of the thi…

neutron star: binaryGravitational waves detectionGeneral Physics and Astronomy01 natural sciencesvacuum stateNOISEinterferometric detectorLIGOnoise: quantumgravitational waves; squeezing; vacuumSettore FIS/01PhysicsQuantum opticsPhysicsQuantum limitQuantum noiseDetectorPhysical Sciencesgravitational waves squeezed lightinterferometric detectorsGravitational waveSqueezed coherent statePhysics Multidisciplinarysqueezed stateGravitation and AstrophysicshorizonGravitational wavesGeneral Relativity and Quantum CosmologyOpticsSettore FIS/05 - Astronomia e Astrofisica0103 physical sciences[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]SDG 7 - Affordable and Clean Energy010306 general physicsenhancementAstrophysiqueScience & Technology/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energybusiness.industryShot noisegravitational radiationgravitational waves thermal noisesensitivityLIGOdetector: sensitivityQuantum technology* Automatic Keywords *VIRGOinjectionPhysics and Astronomygravitational radiation detector: interferometerGravitational waves; interferometric detectors; noiseWAVEbusiness[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]gravitational waves nonlinear optics quantum opticsPhysical Review Letters
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Wireless battery chargers for portable applications: Design and test of a high-efficiency power receiver

2013

In this study, the authors present a 5 W wireless battery charger for handheld devices. Efficiency-related issues are addressed. A power receiver architecture which improves power conversion efficiency is proposed. Design hints are provided for further applications. Comparison with a conventional architecture is provided as well. Laboratory prototypes of both the proposed and the conventional architectures have been realised. Both prototypes are tested by using the same power transmitter to perform a valuable comparison. As shown by the experimental results, in the receiver side power conversion efficiency is increased up to 99% thanks to the proposed solution.

Battery (electricity)EngineeringBattery chargerHand held devicebusiness.industryPower transmittersTransmitterEnergy conversion efficiencyElectrical engineeringPortable applicationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaPower (physics)Power conversion efficiencieBattery chargerHigh-efficiencyElectronic engineeringWirelessElectrical and Electronic EngineeringDesign and testbusinessMobile devicePower receiver
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