| dc.identifier.uri | http://hdl.handle.net/1951/55394 | |
| dc.identifier.uri | http://hdl.handle.net/11401/70966 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Dissertation | |
| dcterms.abstract | In this thesis, we present work on coherent control of multilevelquantum systems in the strong field limit using shaped ultrafastlaser pulses. In recent years there have been numerous multiphotonabsorption experiments in two,three, and four-level atomic/molecularsystems and many are performed in the limit of weak fields whereperturbation theory is valid. Here, we describe a series ofexperiments aimed at exploring and understanding multiphotontransitions when the exciting field is strong and perturbationtheory breaks down. Our approach to strong field control utilizesboth parameterized scans of various pulse shapes and closed-looplearning control to identify a pulse shape that is optimal forpopulating a target quantum state. With this we will highlight thedifference between sequential population transfer and adiabaticrapid passage in multilevel systems with multiphoton couplingbetween levels. Additionally, we examine strong field control of afour-level atomic interferometer and show how interference in atarget state changes from resonant pathways in the frequency domainto time-domain interference via a singe path.Further, we use shaped femtosecond pulses to demonstrate aphenomenon in which a three-level atom becomes a modulator of anultrafast pulse. The results are based on a pump-probe scheme thatis very similar to Electromagnetically Induced Transparency (EIT).Important dynamics associated with a time-dependent coupling fieldare examined. Lastly, we extend previous work on two-photon drivensuperfluorescence from a shaped ultrafast drive laser and show howstimulated emission near threshold can turn modest coherent controlyields into essentially perfect discrimination between systems wherea control factor of about 10<super>4</super> is achieved between atomic andmolecular species. | |
| dcterms.available | 2012-05-15T18:02:44Z | |
| dcterms.available | 2015-04-24T14:45:20Z | |
| dcterms.contributor | Weinacht, Thomas C. | en_US |
| dcterms.contributor | Peter W. Stephens | en_US |
| dcterms.contributor | Thomas H. Bergemann | en_US |
| dcterms.contributor | Valery Milner. | en_US |
| dcterms.creator | Clow, Stephen Daniel | |
| dcterms.dateAccepted | 2012-05-15T18:02:44Z | |
| dcterms.dateAccepted | 2015-04-24T14:45:20Z | |
| dcterms.dateSubmitted | 2012-05-15T18:02:44Z | |
| dcterms.dateSubmitted | 2015-04-24T14:45:20Z | |
| dcterms.description | Department of Physics | en_US |
| dcterms.format | Application/PDF | en_US |
| dcterms.format | Monograph | |
| dcterms.identifier | Clow_grad.sunysb_0771E_10157.pdf | en_US |
| dcterms.identifier | http://hdl.handle.net/1951/55394 | |
| dcterms.identifier | http://hdl.handle.net/11401/70966 | |
| dcterms.issued | 2010-08-01 | |
| dcterms.language | en_US | |
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Previous issue date: 1 | en |
| dcterms.provenance | Made available in DSpace on 2015-04-24T14:45:20Z (GMT). No. of bitstreams: 3
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Previous issue date: 1 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | Coherent Control, Femtosecond, Multilevel, Multiphoton, Strong Field, Ultrafast | |
| dcterms.subject | Physics, Atomic -- Physics, Molecular | |
| dcterms.title | Strong Field Control of Multilevel Quantum Systems | |
| dcterms.type | Dissertation | |
