335 citations · 1.2k across the 13 of their papers we have counts for
13 papers
Observation of non-contact Casimir friction
Zhujing Xu, Peng Ju, Kunhong Shen +3
Quantum mechanics predicts the occurrence of random electromagnetic field fluctuations, or virtual photons, in vacuum. The exchange of virtual photons between two bodies in relativ…
Near-field GHz rotation and sensing with an optically levitated nanodumbbell
Peng Ju, Yuanbin Jin, Kunhong Shen +5
A levitated non-spherical nanoparticle in a vacuum is ideal for studying quantum rotations and is an extremely sensitive torque and force detector. It has been proposed to probe fu…
Nuclear spin polarization and control in a van der Waals material
Xingyu Gao, Sumukh Vaidya, Kejun Li +11
Van der Waals layered materials are a focus of materials research as they support strong quantum effects and can easily form heterostructures. Electron spins in van der Waals mater…
Switching and amplifying three-body Casimir effects
Zhujing Xu, Peng Ju, Xingyu Gao +3
The dynamics of three interacting objects has been investigated extensively in Newtonian gravitational physics (often termed the three-body problem), and is important for many quan…
On-chip optical levitation with a metalens in vacuum
Kunhong Shen, Yao Duan, Peng Ju +6
Optical levitation of dielectric particles in vacuum is a powerful technique for precision measurements, testing fundamental physics, and quantum information science. Conventional…
High-contrast plasmonic-enhanced shallow spin defects in hexagonal boron nitride for quantum sensing
Xingyu Gao, Boyang Jiang, Andres E. Llacsahuanga Allcca +9
The recently discovered spin defects in hexagonal boron nitride (hBN), a layered van der Waals material, have great potential in quantum sensing. However, the photoluminescence and…
Non-reciprocal energy transfer through the Casimir effect
Zhujing Xu, Xingyu Gao, Jaehoon Bang +2
A fundamental prediction of quantum mechanics is that there are random fluctuations everywhere in a vacuum because of the zero-point energy. Remarkably, quantum electromagnetic flu…
5D cooling and nonlinear dynamics of an optically levitated nanodumbbell
Jaehoon Bang, Troy Seberson, Peng Ju +5
Optically levitated nonspherical particles in vacuum are excellent candidates for torque sensing, rotational quantum mechanics, high-frequency gravitational wave detection, and mul…
Quantum information processing with closely-spaced diamond color centers in strain and magnetic fields
Zhujing Xu, Zhang-qi Yin, Qinkai Han +1
Electron and nuclear spins of diamond nitrogen-vacancy (NV) centers are good candidates for quantum information processing as they have long coherence time and can be initialized a…
Ultrasensitive torque detection with an optically levitated nanorotor
Jonghoon Ahn, Zhujing Xu, Jaehoon Bang +3
Torque sensors such as the torsion balance enabled the first determination of the gravitational constant by Cavendish and the discovery of Coulomb's law. Torque sensors are also wi…
Stable emission and fast optical modulation of quantum emitters in boron nitride nanotubes
Jonghoon Ahn, Zhujing Xu, Jaehoon Bang +3
Atom-like defects in two-dimensional (2D) hexagonal boron nitride (hBN) have recently emerged as a promising platform for quantum information science. Here we investigate single-ph…
Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor
Jonghoon Ahn, Zhujing Xu, Jaehoon Bang +5
Levitated optomechanics has great potentials in precision measurements, thermodynamics, macroscopic quantum mechanics and quantum sensing. Here we synthesize and optically levitate…
Detecting Casimir torque with an optically levitated nanorod
Zhujing Xu, Tongcang Li
The linear momentum and angular momentum of virtual photons of quantum vacuum fluctuations can induce the Casimir force and the Casimir torque, respectively. While the Casimir forc…