The Experts below are selected from a list of 526986 Experts worldwide ranked by ideXlab platform
Karsten Danzmann - One of the best experts on this subject based on the ideXlab platform.
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first stage of lisa data processing ii alternative filtering dynamic models for lisa
Physical Review D, 2015Co-Authors: Yan Wang, Gerhard Heinzel, Karsten DanzmannAbstract:Space-borne gravitational wave detectors, such as (e)LISA, are designed to operate in the Low-Frequency Band (mHz to Hz), where there is a variety of gravitational wave sources of great scientific value. To achieve the extraordinary sensitivity of these detector, the precise synchronization of the clocks on the separate spacecraft and the accurate determination of the interspacecraft distances are important ingredients. In our previous paper (Phys. Rev. D 90, 064016 [2014]), we have described a hybrid-extend Kalman filter with a full state vector to do this job. In this paper, we explore several different state vectors and their corresponding (phenomenological) dynamic models, to reduce the redundancy in the full state vector, to accelerate the algorithm, and to make the algorithm easily extendable to more complicated scenarios.
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quantum engineering of squeezed states for quantum communication and metrology
arXiv: Quantum Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz has been observed for the first time. Nonclassical properties of light in such a low frequency Band is required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. And furthermore, they cover the frequencies of motions of heavily macroscopic objects and might therefore support the attempts to observe entanglement in our macroscopic world.
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Quantum engineering of squeezed states for quantum communication and metrology
New Journal of Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz have been observed for the first time. Nonclassical properties of light in such a low frequency Band are required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. Furthermore, they cover the frequencies of motion of heavy macroscopic objects and might therefore support attempts to observe entanglement in our macroscopic world.
Roman Schnabel - One of the best experts on this subject based on the ideXlab platform.
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quantum engineering of squeezed states for quantum communication and metrology
arXiv: Quantum Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz has been observed for the first time. Nonclassical properties of light in such a low frequency Band is required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. And furthermore, they cover the frequencies of motions of heavily macroscopic objects and might therefore support the attempts to observe entanglement in our macroscopic world.
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Quantum engineering of squeezed states for quantum communication and metrology
New Journal of Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz have been observed for the first time. Nonclassical properties of light in such a low frequency Band are required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. Furthermore, they cover the frequencies of motion of heavy macroscopic objects and might therefore support attempts to observe entanglement in our macroscopic world.
Huajiang Ouyang - One of the best experts on this subject based on the ideXlab platform.
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low frequency Band gaps in a metamaterial rod by negative stiffness mechanisms design and experimental validation
Applied Physics Letters, 2019Co-Authors: Kai Wang, Jiaxi Zhou, Qiang Wang, Huajiang OuyangAbstract:A metamaterial rod with resonators containing negative-stiffness (NS) mechanisms is proposed for generating very Low-Frequency Bandgaps. The underlying principle employs the NS mechanism (a pair of mutual repelling permanent magnet rings) to partially or totally neutralize the stiffness of the positive-stiffness element (two coil springs) of the resonator and thus to achieve an ultralow, even zero, stiffness, which enables a significant shift of the Bandgap from a high frequency to a low one. Experiments on the restoring force feature of the resonator and the Bandgap of the metamaterial rod are carried out, which provide sufficient evidence to validate the proposed concept for substantially lowering Bandgaps in locally resonant metamaterials. This study opens a potential path to manipulate elastic waves within a very Low-Frequency range.
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multi low frequency flexural wave attenuation in euler bernoulli beams using local resonators containing negative stiffness mechanisms
Physics Letters A, 2017Co-Authors: Jiaxi Zhou, Kai Wang, Huajiang OuyangAbstract:Abstract Multi-Low-Frequency Band gaps for flexural waves in beams are realized by using multiple resonators containing negative-stiffness (NS) mechanisms in one unit cell. The resonator is constructed by a vertical spring connecting with two oblique springs, which act as an NS mechanism to counteract the stiffness of the vertical spring, and thus substantially lower the stiffness of the resonator. The Band structures of flexural waves in a locally resonant beam are revealed by using the plane wave expansion method, which are validated by numerical simulations. A stop Band seamlessly blending attenuation Band and complex Band is observed, which presents a wide Band gap. The Band gap can be further broadened by adding more resonators into the unit cell with resonant frequencies surrounding the target frequency by a proper off-set ratio. Finally, an application of this proposed method is demonstrated in attenuating vibrations in a raft beam excited by two forces with different low frequencies, by assigning multi-Low-Frequency Band gaps of receptances at the excitation frequencies.
Jing Qiu - One of the best experts on this subject based on the ideXlab platform.
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flexural vibration Band gaps in euler bernoulli beams with locally resonant structures with two degrees of freedom
Physical Review B, 2006Co-Authors: Yaozong Liu, Gang Wang, Honggang Zhao, Jing QiuAbstract:Using the transfer matrix theory, we provided the Band structure of flexural waves in an Euler-Bernoulli beam with locally resonant structures, with two degrees of freedom, i.e., a resonator with vertical and rotational vibration. The frequency response function of a finite periodic system was calculated by the finite element method. The material damping of rubber makes the gaps wider in the calculation. These theoretical results show a good agreement with those of the experiment. The measured result provides an attenuation of over $20\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$ in the frequency range of the Band gaps. The existence of Low-Frequency Band gaps in such a beam provides a method of flexural vibration control of beams.
H. Vahlbruch - One of the best experts on this subject based on the ideXlab platform.
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quantum engineering of squeezed states for quantum communication and metrology
arXiv: Quantum Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz has been observed for the first time. Nonclassical properties of light in such a low frequency Band is required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. And furthermore, they cover the frequencies of motions of heavily macroscopic objects and might therefore support the attempts to observe entanglement in our macroscopic world.
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Quantum engineering of squeezed states for quantum communication and metrology
New Journal of Physics, 2007Co-Authors: H. Vahlbruch, Szczepan Chelkowski, Karsten Danzmann, Roman SchnabelAbstract:We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency Band down to 1 Hz have been observed for the first time. Nonclassical properties of light in such a low frequency Band are required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency Band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. Furthermore, they cover the frequencies of motion of heavy macroscopic objects and might therefore support attempts to observe entanglement in our macroscopic world.
