Quantum entanglement of a tunneling spin with mechanical modes of a torsional resonator
arXiv:1104.1170 · doi:10.1103/PhysRevX.1.011005
Abstract
We solve Schrödinger equation describing a tunneling macrospin coupled to a torsional oscillator. Energy spectrum is studied for various quantum regimes. Magnetic susceptibility and noise spectrum are computed. We show that entanglement of the spin with mechanical modes of a subnanometer oscillator results in the decoherence of spin tunneling. For larger oscillators the presence of a tunneling spin can be detected through splitting of the mechanical mode at the resonance. Our results apply to experiments with magnetic molecules coupled to nanoresonators.
5 pages, 4 figures
References in corpus (6)
- Generating Single Microwave Photons in a Circuit
- An off-board quantum point contact as a sensitive detector of cantilever motion
- Nano-Torsional Resonator Torque Magnetometry
- Macrospin Tunneling and Magnetopolaritons with Nanomechanical Interference
- Rotational States of Magnetic Molecules
- Single magnetic molecule between conducting leads: Effect of mechanical rotations
Cited by in corpus (15)
- Angular momentum in spin-phonon processes
- Quantum many-body dynamics of the Einstein-de Haas effect
- Dynamics and Dissipation induced by Single-Electron Tunneling in Carbon Nanotube Nanoelectromechanical Systems
- Magnetic Actuation and Feedback Cooling of a Cavity Optomechanical Torque Sensor
- Magnetomechanical coupling and ferromagnetic resonance in magnetic nanoparticles
- Spin Transfer of Quantum Information between Majorana Modes and a Resonator
- Landau-Zener dynamics of a nanoresonator containing a tunneling spin
- Linear Stability Analysis of a Levitated Nanomagnet in a Static Magnetic Field: Quantum Spin Stabilized Magnetic Levitation
- Electron-vibron coupling effects on electron transport via a single-molecule magnet
- Mechanism for nuclear and electron spin excitation by radio frequency current
- Damping of a nanocantilever by paramagnetic spins
- Quantum Tunneling of the Magnetic Moment in a Free Particle
- Conservation of Angular Momentum in the Elastic Medium with Spins
- Distribution of eigenstate populations and dissipative beating dynamics in uniaxial single-spin magnets
- Torque-free manipulation of nanoparticle rotations via embedded spins