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Anthony Rapp Thesis.pdf (1.88 MB)

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Numerical simulations of cold atom ratchets in dissipative optical lattices

Rapp, Anthony P
http://orcid.org/0000-0001-8871-7361
http://rave.ohiolink.edu/etdc/view?acc_num=miami1565625897258688

Abstract Details

2019, Master of Science, Miami University, Physics.
Brownian ratchets are interesting nanodevices capable of performing useful work by extracting energy from surrounding fluctuations, such that under certain conditions an increase in noise level can result in increased efficiency. Cold atoms confined in an optical lattice may serve as ideal candidates for investigating the basic physics behind Brownian ratchet efficiency dependence on environmental noise. In this thesis we implement detailed semi-classical Monte Carlo simulations to model the asymmetric diffusive motion of an Fg=1/2 ↔ Fe=3/2 atom in a 1D optical lattice in which one of the beams is phase-modulated in order to create a ratchet. We closely follow the treatment already shown by Martin Brown in his doctoral thesis [M. Brown, PhD thesis, University College London (2008)] and the referenced results therein. The results of simulations for ratchets using different types of driving modulations, such as biharmonic and multi-frequency, are presented as well as the case of a gating ratchet. All codes for our simulations are included.
Samir Bali (Advisor)
Imran Mirza (Committee Member)
Edward Samson (Committee Member)
132 p.
Physics
Brownian ratchets; quantum optics; physics simulation; Fortran

Recommended Citations

Citations

  • Rapp, A. P. (2019). Numerical simulations of cold atom ratchets in dissipative optical lattices [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1565625897258688

    APA Style (7th edition)

  • Rapp, Anthony. Numerical simulations of cold atom ratchets in dissipative optical lattices. 2019. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1565625897258688.

    MLA Style (8th edition)

  • Rapp, Anthony. "Numerical simulations of cold atom ratchets in dissipative optical lattices." Master's thesis, Miami University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1565625897258688

    Chicago Manual of Style (17th edition)

miami1565625897258688
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This open access ETD is published by Miami University and OhioLINK.