Measurement and feedback for cooling heavy levitated particles in low frequency traps
arXiv:1903.10470 · doi:10.1103/PhysRevA.100.063819
Abstract
We consider a possible route to ground state cooling of a levitated nanoparticle, magnetically trapped by a strong permanent magnet, using a combination of measurement and feedback. The trap frequency of this system is much lower than those involving trapped ions or nano-mechanical resonators. Minimisation of environmental heating is therefore challenging as it requires control of the system on a timescale comparable to the inverse of the trap frequency. We show that these traps are an excellent platform for performing optimal feedback control via real-time state estimation, for the preparation of motional states with measurable quantum properties.
arXiv comment9 pages, 6 figures
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- Enhanced spin-mechanical interaction with levitated micromagnets
- Optimal control for feedback cooling in cavityless levitated optomechanics
- Mass-Independent Scheme to Test the Quantumness of a Massive Object
- Measurement-feedback control of chiral photon emission from an atom chain into a nanofiber
- Application of simultaneous and continuous measurement of noncommutative observables: Preparation of the pure ideal quadrature-squeezed state by feedback control
- Feedback cooling of fermionic atoms in optical lattices