Search Results - "Li, Tongcang"

Ultrasensitive torque detection with an optically levitated nanorotor by Ahn, Jonghoon, Xu, Zhujing, Bang, Jaehoon, Ju, Peng, Gao, Xingyu, Li, Tongcang

“…Torque sensors such as the torsion balance enabled the first determination of the gravitational constant by Henri Cavendish 1 and the discovery of Coulomb’s…”
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Millikelvin cooling of an optically trapped microsphere in vacuum by Raizen, Mark G, Li, Tongcang, Kheifets, Simon

“…Cooling of micromechanical resonators towards the quantum mechanical ground state in their centre-of-mass motion has advanced rapidly in recent years. This…”
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Torsional Optomechanics of a Levitated Nonspherical Nanoparticle by Hoang, Thai M, Ma, Yue, Ahn, Jonghoon, Bang, Jaehoon, Robicheaux, F, Yin, Zhang-Qi, Li, Tongcang

“…An optically levitated nanoparticle in vacuum is a paradigm optomechanical system for sensing and studying macroscopic quantum mechanics. While its…”
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Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor by Ahn, Jonghoon, Xu, Zhujing, Bang, Jaehoon, Deng, Yu-Hao, Hoang, Thai M, Han, Qinkai, Ma, Ren-Min, Li, Tongcang

“…Levitated optomechanics has great potential in precision measurements, thermodynamics, macroscopic quantum mechanics, and quantum sensing. Here we synthesize…”
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Observation of Brownian Motion in Liquids at Short Times: Instantaneous Velocity and Memory Loss by Kheifets, Simon, Simha, Akarsh, Melin, Kevin, Li, Tongcang, Raizen, Mark G.

“…Measurement of the instantaneous velocity of Brownian motion of suspended particles in liquid probes the microscopic foundations of statistical mechanics in…”
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Electron spin control of optically levitated nanodiamonds in vacuum by Hoang, Thai M., Ahn, Jonghoon, Bang, Jaehoon, Li, Tongcang

“…Electron spins of diamond nitrogen-vacancy (NV) centres are important quantum resources for nanoscale sensing and quantum information. Combining NV spins with…”
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Measurement of the Instantaneous Velocity of a Brownian Particle by Li, Tongcang, Kheifets, Simon, Medellin, David, Raizen, Mark G

“…Brownian motion of particles affects many branches of science. We report on the Brownian motion of micrometer-sized beads of glass held in air by an optical…”
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Non-reciprocal energy transfer through the Casimir effect by Xu, Zhujing, Gao, Xingyu, Bang, Jaehoon, Jacob, Zubin, Li, Tongcang

“…One of the fundamental predictions of quantum mechanics is the occurrence of random fluctuations in a vacuum caused by the zero-point energy. Remarkably,…”
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Experimental Test of the Differential Fluctuation Theorem and a Generalized Jarzynski Equality for Arbitrary Initial States by Hoang, Thai M, Pan, Rui, Ahn, Jonghoon, Bang, Jaehoon, Quan, H T, Li, Tongcang

“…Nonequilibrium processes of small systems such as molecular machines are ubiquitous in biology, chemistry, and physics but are often challenging to comprehend…”
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Excited-state spin-resonance spectroscopy of V $_{{{{{{{{\rm{B}}}}}}}}}^{-}$$ B − defect centers in hexagonal boron nitride by Nikhil Mathur, Arunabh Mukherjee, Xingyu Gao, Jialun Luo, Brendan A. McCullian, Tongcang Li, A. Nick Vamivakas, Gregory D. Fuchs

“…The negatively charged boron vacancy in hBN shows promise as a quantum sensor, but, until recently, the focus has been on its ground-state properties. Here,…”
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Nonparaxial Mathieu and Weber accelerating beams by Zhang, Peng, Hu, Yi, Li, Tongcang, Cannan, Drake, Yin, Xiaobo, Morandotti, Roberto, Chen, Zhigang, Zhang, Xiang

“…We demonstrate both theoretically and experimentally nonparaxial Mathieu and Weber accelerating beams, generalizing the concept of previously found…”
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High-Contrast Plasmonic-Enhanced Shallow Spin Defects in Hexagonal Boron Nitride for Quantum Sensing by Gao, Xingyu, Jiang, Boyang, Llacsahuanga Allcca, Andres E, Shen, Kunhong, Sadi, Mohammad A, Solanki, Abhishek B, Ju, Peng, Xu, Zhujing, Upadhyaya, Pramey, Chen, Yong P, Bhave, Sunil A, Li, Tongcang

“…The recently discovered spin defects in hexagonal boron nitride (hBN), a layered van der Waals material, have great potential in quantum sensing. However, the…”
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Giant enhancement of vacuum friction in spinning YIG nanospheres by Khosravi, Farhad, Sun, Wenbo, Khandekar, Chinmay, Li, Tongcang, Jacob, Zubin

“…Abstract Experimental observations of vacuum radiation and vacuum frictional torque are challenging due to their vanishingly small effects in practical…”
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Generation of acoustic self-bending and bottle beams by phase engineering by Zhang, Peng, Li, Tongcang, Zhu, Jie, Zhu, Xuefeng, Yang, Sui, Wang, Yuan, Yin, Xiaobo, Zhang, Xiang

“…Directing acoustic waves along curved paths is critical for applications such as ultrasound imaging, surgery and acoustic cloaking. Metamaterials can direct…”
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Quantum sensing and imaging with spin defects in hexagonal boron nitride by Vaidya, Sumukh, Gao, Xingyu, Dikshit, Saakshi, Aharonovich, Igor, Li, Tongcang

“…Color centers in hexagonal boron nitride (hBN) have recently emerged as promising candidates for a new wave of quantum applications. Thanks to hBN's high…”
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Femtosecond Laser Writing of Spin Defects in Hexagonal Boron Nitride by Gao, Xingyu, Pandey, Siddhant, Kianinia, Mehran, Ahn, Jonghoon, Ju, Peng, Aharonovich, Igor, Shivaram, Niranjan, Li, Tongcang

“…Optically active spin defects in wide-bandgap materials have many potential applications in quantum information and quantum sensing. Spin defects in…”
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Brownian motion at short time scales by Li, Tongcang, Raizen, Mark G.

“…Brownian motion has played important roles in many different fields of science since its origin was first explained by Albert Einstein in 1905. Einstein's…”
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Observation and control of Casimir effects in a sphere-plate-sphere system by Xu, Zhujing, Ju, Peng, Gao, Xingyu, Shen, Kunhong, Jacob, Zubin, Li, Tongcang

“…A remarkable prediction of quantum field theory is that there are quantum electromagnetic fluctuations (virtual photons) everywhere, which leads to the…”
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Coherent dynamics of strongly interacting electronic spin defects in hexagonal boron nitride by Gong, Ruotian, He, Guanghui, Gao, Xingyu, Ju, Peng, Liu, Zhongyuan, Ye, Bingtian, Henriksen, Erik A., Li, Tongcang, Zu, Chong

“…Optically active spin defects in van der Waals materials are promising platforms for modern quantum technologies. Here we investigate the coherent dynamics of…”
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Nanotube spin defects for omnidirectional magnetic field sensing by Gao, Xingyu, Vaidya, Sumukh, Dikshit, Saakshi, Ju, Peng, Shen, Kunhong, Jin, Yuanbin, Zhang, Shixiong, Li, Tongcang

“…Optically addressable spin defects in three-dimensional (3D) crystals and two-dimensional (2D) van der Waals (vdW) materials are revolutionizing nanoscale…”
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