Superconducting microsphere magnetically levitated in an anharmonic potential with integrated magnetic readout
arXiv:2210.13451 · doi:10.1103/PhysRevApplied.19.054047
Abstract
Magnetically levitated superconducting microparticles offer a promising path to quantum experiments with picogram to microgram objects. In this work, we levitate a 700ng amu superconducting microsphere in a magnetic chip trap in which detection is integrated. We measure the particle's center-of-mass motion using a DC-SQUID magnetometer. The trap frequencies are continuously tunable between 30 and 160 Hz and the particle remains stably trapped over days in a dilution refrigerator environment. We characterize motional-amplitude-dependent frequency shifts, which arise from trap anharmonicities, namely Duffing nonlinearities and mode couplings. We explain this nonlinear behavior using finite element modelling of the chip-based trap potential. This work constitutes a first step towards quantum experiments and ultrasensitive inertial sensors with magnetically levitated superconducting microparticles.
version close to published version; 16 pages, 13 figures
References in corpus (5)
- Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
- Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
- Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle
- Acceleration sensing with magnetically levitated oscillators above a superconductor
- Spin-mechanics with nitrogen-vacancy centers and trapped particles
Cited by in corpus (24)
- Massive quantum systems as interfaces of quantum mechanics and gravity
- High-Q magnetic levitation and control of superconducting microspheres at millikelvin temperatures
- Macroscopic Quantum Superpositions via Dynamics in a Wide Double-Well Potential
- Quantum theory of light interaction with a Lorenz-Mie particle: Optical detection and three-dimensional ground-state cooling
- Maglev for Dark Matter: Dark-photon and axion dark matter sensing with levitated superconductors
- Dark Matter Searches with Levitated Sensors
- Quantum control of continuous systems via nonharmonic potential modulation
- Superconducting Levitated Detector of Gravitational Waves
- Detecting kHz gravitons from a neutron star merger with a multi-mode resonant mass detector
- First Search for Ultralight Dark Matter Using a Magnetically Levitated Particle
- Hot Schrödinger Cat States
- Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
- Kerr enhanced optomechanical cooling in the unresolved sideband regime
- Superconducting flip-chip devices using indium microspheres on Au-passivated Nb or NbN as under-bump metallization layer
- Stable magnetic levitation of soft ferromagnets for macroscopic quantum mechanics
- A general approach to backaction-evading receivers with magnetomechanical and electromechanical sensors
- Characterisation of a levitated sub-mg ferromagnetic cube in a planar alternating-current magnetic Paul trap
- Modelling magnetically-levitated superconducting ellipsoids, cylinders and cuboids for quantum magnetomechanics
- Gyroscopically stabilized quantum spin rotors
- Mechanical Sensors for Ultraheavy Dark Matter Searches via Long-range Forces
- Roto-translational optomechanics
- Magnetic flux threading a planar holed superconductor
- Modification of adhesion between microparticles and engineered silicon surfaces
- Nonlinear stochastic and quantum motion from Coulomb forces