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Thesis_AlexanderStaron.pdf (7.51 MB)

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Stochastic Resonances and Velocity Sorting in a Dissipative Optical Lattice

Staron, Alexander
http://orcid.org/0000-0002-0448-7448
http://rave.ohiolink.edu/etdc/view?acc_num=miami1596451157122873

Abstract Details

2020, Master of Science, Miami University, Physics.
This thesis investigates the dynamics of a sample of ultracold 85Rb atoms in a 3D tetrahedral dissipative optical lattice. By illuminating a dissipative optical lattice with a weak probe beam and measuring its transmission spectrum, we detect resonances that characterize the vibrational frequencies of the atoms, the energy spacing between light-shifted Zeeman sublevels, and directed propagation modes. We observe a resonant enhancement in the directed propagation of cold atoms as we vary the photon scattering rate. This resonant system response as a function of random environmental noise is a signature of stochastic resonance. The directed propagation is induced by probe intensities less than 1% of the lattice intensity and occurs perpendicular to probe propagation. We experimentally characterize the stochastic resonance as a function of system parameters such as probe intensity and lattice well depth. Further, we present a method for velocity-sorting cold atoms in an optical lattice by inducing velocity-specific propagation in two chosen directions.
Samir Bali (Advisor)
E. Carlo Samson (Committee Member)
Imran Mirza (Committee Member)
140 p.
Physics
optical lattice; stochastic resonance; pump probe spectroscopy; Brownian ratchet; velocity sorting; Brillouin; Raman; cold atoms; directed propagation

Recommended Citations

Citations

  • Staron, A. (2020). Stochastic Resonances and Velocity Sorting in a Dissipative Optical Lattice [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1596451157122873

    APA Style (7th edition)

  • Staron, Alexander. Stochastic Resonances and Velocity Sorting in a Dissipative Optical Lattice. 2020. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1596451157122873.

    MLA Style (8th edition)

  • Staron, Alexander. "Stochastic Resonances and Velocity Sorting in a Dissipative Optical Lattice." Master's thesis, Miami University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1596451157122873

    Chicago Manual of Style (17th edition)

miami1596451157122873
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This open access ETD is published by Miami University and OhioLINK.