Measurement and feedback for cooling heavy levitated particles in low frequency traps
| Autor: | Walker, L. S., Robb, G. R. M., Daley, A. J. |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 100, 063819 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.100.063819 |
| Popis: | 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. Comment: 9 pages, 6 figures |
| Databáze: | arXiv |
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