Ucla Phd Thesis Archive about enhancing and maintaining knowledge through constant studying, both in class Ucla Phd Thesis Archive and at home. The number of tasks may vary greatly from subject to subject. Nevertheless, they have to be ready on time/10() Ph.D. Theses [1] W. Wang, “Hardware-enabled design for security (dfs) solutions,” PhD Thesis, Department of Electrical Engineering, University of California Los Angeles, UCLA Graduate Programs: A-Z Quickly browse graduate programs at the University of California Los Angeles. Meet UCLA faculty, learn graduate school admissions requirements, acceptance rates, and deadlines, and which programs offer doctoral and master’s degrees
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Ultracold cold molecular ions promise new directions in various studies of funda- mental physics, phd thesis ucla as precision measurements, ultracold chemistry and quan- tum information sciences. All these exciting applications require the molecular ion to be prepared at ground state of motional and internal degrees of freedom. It has been proposed that this stringent goal could be achieved through sympa- thetic cooling via collisions with laser-cooled neutral atoms.
Three fundamental issues of this method are addressed in this thesis. First, an analytical model is established to accurately describe collision-induced heating of a single ion in contact with cold neutral atoms.
This model reveals that micromotion interruption is the cause of heating, and gives results about steady-state temperature and sympathetic cooling rate verified by Monte-Carlo simulations. It also provides insight into the power-law tails observed in the energy distribution of the trapped ion.
Next, we consider the case of multiple ions, whose inter-particle Coulomb repulsion causes ions in the Coulomb crystal state to spontaneously melt into a gas phase ion cloud, due phd thesis ucla the same micromotion interruption mechanism.
The analysis of this problem with a plasma model leads to the experimental determination of a quantity central to plasma physics, Coulomb Logarithm, phd thesis ucla, in an ion trap.
Although not sensitive to rotational structure, this method already reveals much about the fundamental quantum physics in the photodissociation process, phd thesis ucla. The measured cross-section results paves the road toward state-selective spectroscopy currently going on in our lab. The MOTion trap: a hybrid atom-ion trap system for experiments in cold-chemistry and the production of cold polar molecular ions Scott T. Sullivan, This dissertation details of the construction of and experiments performed in a hybrid system consisting of a cold neutral atomic magneto-optical trap MOT contained within a linear radio-frequency quadrupole ion trap LQT.
The combination of these two workhorses of atomic physics facilitates a variety of developing science such as the controlled investigation of ion-neutral quantum chemistry and the production of ground-state molecular ions, phd thesis ucla.
While the primary focus of this work is the production of ultracold molecular phd thesis ucla via sympathetic cooling, there has been investigation of cold T ~ 1 mK ion-neutral charge exchange processes in two different ion-neutral pair systems. In addition, a possible method of producing ultracold homonuclear molecular ions via a photo-associative ionization PAI pathway is studied in the MOT. The LQT traps ions in spatial overlap with a 40 Phd thesis ucla MOT constituting an ultracold buffer gas purposed to sympathetically cool molecular ions.
An effective, general method of producing ground-state molecular ions would open a field of physics allowing, for example, precise measurements of molecular transitions which are uniquely sensitive to parity violation, or the possible variation of fundamental constants. Phd thesis ucla promising application of cold molecular ions is an implementation of a quantum computing architecture by coupling micro-fabricated strip-line resonators to the microwave rotational transition found in many diatomic molecular ions.
As a product of overcoming experimental challenges, this thesis discusses several experiments to characterize trapping and reaction dynamics in the phd thesis ucla. Controlled measurements of these inelastic processes test the cutting edge of quantum theory of ion-neutral interaction in both the ground-state and under optical excitation.
To demonstrate high fidelity qubit operations, phd thesis ucla, a number of unknown state energies were needed. UCLA Phd thesis ucla of Physics and Astronomy Portola Plaza PAB B Los Angeles, CA UCLA Department of Physics and Astronomy Portola Plaza Knudsen Los Angeles, CA You are here Home » Publications » PhD Dissertations.
PhD Dissertations Toward production of ultracold molecular ions Kuang Chen, phd thesis ucla, Ultracold cold molecular ions phd thesis ucla new directions in various studies of funda- mental physics, such as precision measurements, ultracold chemistry and quan- tum information sciences. Download The MOTion trap: a hybrid atom-ion trap system for experiments in cold-chemistry and the production of cold polar molecular ions Scott T.
Sullivan, This dissertation details of the construction of and experiments performed in a hybrid system consisting of a cold neutral atomic magneto-optical trap MOT contained within a linear radio-frequency quadrupole ion trap LQT. Mailing Address UCLA Department of Physics and Astronomy Portola Plaza PAB B Los Angeles, CA Shipping address UCLA Department of Physics and Astronomy Portola Plaza Knudsen Los Angeles, CA Phone Copyright ©UCLA AMO Hudson Lab.
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Aug 31, · Electronic Thesis & Dissertation Drop-In Hours RSVP Required Graduate students who are finalizing their thesis or dissertation are welcome to stop by and receive assistance with filing and formatting requirements ~~~ Monday, August 16, AMAM Zoom* ~~~ Thursday, August 26, AMPM Zoom* ~~~ Ucla Phd Thesis Archive about enhancing and maintaining knowledge through constant studying, both in class Ucla Phd Thesis Archive and at home. The number of tasks may vary greatly from subject to subject. Nevertheless, they have to be ready on time/10() UCLA Ceils Scholar in Teaching and Learning, Ceils Scholar; CIRTL @ UCLA Associate, CIRTL@UCLA. Research Honors and Awards Highest Honors for PhD Dissertation, Sorbonne University, French Ministry of Research and Education Fellow, Sorbonne University Graduate Fellow, ,
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