Force and acceleration sensing with optically levitated nanogram masses at microkelvin temperatures
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TLDR
In this paper, optically levitated objects, together with active feedback cooling, are used to provide an order-of-magnitude improvement on the sensitivity of stateof-the-art accelerometers.Abstract:
An apparatus that uses optically levitated objects, together with active feedback cooling, is used to provide an order-of-magnitude improvement on the sensitivity of state-of-the-art accelerometers. The results pave the way to using such sensors as a part of large-scale particle detectors, for assessing the neutrality of matter and dark matter, and for studying short-ranged Yukawa forces.read more
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Real-time optimal quantum control of mechanical motion at room temperature
Lorenzo Magrini,Philipp Rosenzweig,Constanze Bach,Andreas Deutschmann-Olek,Sebastian G. Hofer,Sungkun Hong,Nikolai Kiesel,Andreas Kugi,Andreas Kugi,Markus Aspelmeyer,Markus Aspelmeyer +10 more
TL;DR: In this paper, the authors demonstrate real-time optimal control of the quantum trajectory of an optically trapped nanoparticle by combining confocal position sensing close to the Heisenberg limit with optimal state estimation via Kalman filtering.
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Levitodynamics: Levitation and control of microscopic objects in vacuum
Carlos Gonzalez-Ballestero,Carlos Gonzalez-Ballestero,Markus Aspelmeyer,Markus Aspelmeyer,Lukas Novotny,Romain Quidant,Oriol Romero-Isart,Oriol Romero-Isart +7 more
TL;DR: The control of levitated nano-and micro-objects in vacuum is of considerable interes... as mentioned in this paper, which capitalizes on scientific achievements in the fields of atomic physics, control theory, and optomechanics.
Journal ArticleDOI
Quantum Gravity Witness via Entanglement of Masses: Casimir Screening
TL;DR: In this paper, a slightly modified experimental design was proposed to mitigate the Casimir potential between two spherical neutral test masses by separating the two macroscopic interferometers by a thin conducting plate.
Journal ArticleDOI
Mechanical quantum sensing in the search for dark matter
Daniel Carney,Daniel Carney,Gordan Krnjaic,Gordan Krnjaic,David Moore,Cindy Regal,Gadi Afek,Sunil A. Bhave,B. M. Brubaker,Thomas Corbitt,Jonathan Cripe,Nicole Crisosto,Andrew Geraci,Sohitri Ghosh,Jack Harris,Anson Hook,Edward W. Kolb,Jonathan Kunjummen,R. F. Lang,Tongcang Li,Tongyan Lin,Zhen Liu,Joseph Lykken,Lorenzo Magrini,Jack Manley,Nobuyuki Matsumoto,Nobuyuki Matsumoto,A. Monte,Fernando Monteiro,T. P. Purdy,Charles Jess Riedel,Robinjeet Singh,Swati Singh,Kanupriya Sinha,Jacob M. Taylor,J. Qin,Dalziel J. Wilson,Yue Zhao +37 more
TL;DR: In this article, the authors outline recent ideas in the potential use of a range of solid-state mechanical sensing technologies to aid in the search for dark matter in a number of energy scales and with a variety of coupling mechanisms.
Journal ArticleDOI
Search for Composite Dark Matter with Optically Levitated Sensors
Fernando Monteiro,Gadi Afek,Daniel Carney,Daniel Carney,Gordan Krnjaic,Gordan Krnjaic,Jiaxiang Wang,David Moore +7 more
TL;DR: These results provide sensitivity to certain classes of composite dark matter models that substantially exceeds existing searches, including those employing kilogram- or ton-scale targets, and can enable directionally sensitive searches for a broad class of previously inaccessible heavy dark matter candidates.
References
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