You searched for subject:(dressed states).
Showing records 1 – 4 of
4 total matches.
No search limiters apply to these results.
Vanderbilt University
1.
Davidson, Roderick Belden II.
Nonlinear Near-Field Dynamics of Plasmonic Nanostructures.
Degree: PhD, Physics, 2016, Vanderbilt University
URL: http://hdl.handle.net/1803/14988 
► We present three experiments designed to explore the physics of nanostructured materials in nonlinear optics. We utilize both photon and electron-beam excitations on systems with…
(more)
▼ We present three experiments designed to explore the physics of nanostructured materials in nonlinear optics. We utilize both photon and electron-beam excitations on systems with local densities of
states specifically designed to generate small mode volumes. The first experiment uses planar arrays of gold Archimedean nanospirals to create asymmetric electric-field profiles for efficient second-harmonic generation (SHG). This nanostructure exhibits two-dimensional chirality and record SHG efficiency per unit volume. In the optical-field-induced second harmonic experiment, we employ an array of serrated gold nanogaps coupled to a polymer film to temporally resolve the change in the second-order nonlinear susceptibility of the polymer with 100 attosecond time resolution while separaing the nonlinear signals from the polymer and plasmonic emission using a spatial light modulator. Finally, we report the first demonstration of a quantum emitter in a
dressed state using an electron beam to excite neutral nitrogen-vacancy (NV0) centers in a diamond nanocrystal. We deduce the presence of Rabi oscillations from the ensemble of NV0 centers at room temperature by measuring the second-order autocorrelation function of the cathodoluminescence signal that arises from the beam-induced plasmon interaction with the NV0 centers. The effects of phonon scattering on the autocorrelation amplitudes are revealed by subtracting the zero-phonon contribution to the cathodoluminescence spectrum. In summary, we have demonstrated three unique approaches for generating strong nonlinearities in nanoscale systems by manipulating the local density of
states and following the dynamical evolution of these
states in the time domain.
Advisors/Committee Members: Sandra J. Rosenthal (committee member), Kalman Varga (committee member), Yaqiong Xu (committee member), Jason G. Valentine (committee member), Benjamin J. Lawrie (committee member), Richard F. Haglund Jr. (Committee Chair).
Subjects/Keywords: nonlinear plasmonics; dressed states; harmonic generation
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Davidson, R. B. I. (2016). Nonlinear Near-Field Dynamics of Plasmonic Nanostructures. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/14988
Chicago Manual of Style (16th Edition):
Davidson, Roderick Belden II. “Nonlinear Near-Field Dynamics of Plasmonic Nanostructures.” 2016. Doctoral Dissertation, Vanderbilt University. Accessed March 06, 2021.
http://hdl.handle.net/1803/14988.
MLA Handbook (7th Edition):
Davidson, Roderick Belden II. “Nonlinear Near-Field Dynamics of Plasmonic Nanostructures.” 2016. Web. 06 Mar 2021.
Vancouver:
Davidson RBI. Nonlinear Near-Field Dynamics of Plasmonic Nanostructures. [Internet] [Doctoral dissertation]. Vanderbilt University; 2016. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1803/14988.
Council of Science Editors:
Davidson RBI. Nonlinear Near-Field Dynamics of Plasmonic Nanostructures. [Doctoral Dissertation]. Vanderbilt University; 2016. Available from: http://hdl.handle.net/1803/14988
University of New Mexico
2.
Hankin, Aaron.
Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology.
Degree: Physics & Astronomy, 2015, University of New Mexico
URL: http://hdl.handle.net/1928/25779
► With the advent of laser cooling and trapping, neutral atoms have become a foundational source of accuracy for applications in metrology and are showing great…
(more)
▼ With the advent of laser cooling and trapping, neutral atoms have become a foundational source of accuracy for applications in metrology and are showing great potential for their use as qubits in quantum information. In metrology, neutral atoms provide the most accurate references for the measurement of time and acceleration. The unsurpassed stability provided by these systems make neutral atoms an attractive avenue to explore applications in quantum information and computing. However, to fully investigate the field of quantum information, we require a method to generate entangling interactions between neutral-atom qubits. Recent progress in the use of highly-excited Rydberg
states for strong dipolar interactions has shown great promise for controlled entanglement using the Rydberg blockade phenomenon. I report the use of singly-trapped cesium atoms as qubits for applications in metrology and quantum information. Each atom provides a physical basis for a single qubit by encoding the required information into the ground-state hyperfine structure of cesium. Through the manipulation of these qubits with microwave and optical frequency sources, we demonstrate the capacity for arbitrary single-qubit control by driving qubit rotations in three orthogonal directions on the Bloch sphere. With this control, we develop an atom interferometer that far surpasses the force sensitivity of other approaches by applying the well-established technique of light-pulsed atom-matterwave interferometry to single atoms. Following this, we focus on two-qubit interactions using highly-excited Rydberg
states. Through the development of a unique single-photon approach to Rydberg excitation using an ultraviolet laser at 319 nm, we observe the Rydberg blockade interaction between atoms separated by 6.6(3) microns. Motivated by the observation of Rydberg blockade, we study the application of Rydberg-
dressed states for a quantum controlled-phase gate. Using a realistic simulation of the
dressed-state dynamics, we calculate a controlled-phase gate fidelity of 94% that is primarily limited by Doppler frequency shifts. Finally, we employ our single-photon excitation laser to measure the Rydberg-
dressed interaction, thus demonstrating the viability of this approach.
Advisors/Committee Members: Deutsch, Ivan, Biedermann, Grant, Carlton, Caves, Lidke, Keith.
Subjects/Keywords: atomic physics; quantum information; quantum computing; Rydberg spectroscopy; atom interferometry; Rydberg dressing; Rydberg-dressed states; controlled-phase gate; cphase gate
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hankin, A. (2015). Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology. (Doctoral Dissertation). University of New Mexico. Retrieved from http://hdl.handle.net/1928/25779
Chicago Manual of Style (16th Edition):
Hankin, Aaron. “Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology.” 2015. Doctoral Dissertation, University of New Mexico. Accessed March 06, 2021.
http://hdl.handle.net/1928/25779.
MLA Handbook (7th Edition):
Hankin, Aaron. “Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology.” 2015. Web. 06 Mar 2021.
Vancouver:
Hankin A. Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology. [Internet] [Doctoral dissertation]. University of New Mexico; 2015. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1928/25779.
Council of Science Editors:
Hankin A. Rydberg Excitation of Single Atoms for Applications in Quantum Information and Metrology. [Doctoral Dissertation]. University of New Mexico; 2015. Available from: http://hdl.handle.net/1928/25779
Université de Grenoble
3.
Rohr, Sven.
Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique.
Degree: Docteur es, Physique, 2014, Université de Grenoble
URL: http://www.theses.fr/2014GRENY046
► L'exploration du monde quantique au moyen d'objets macroscopiques constitue l'un des défis centraux de ces dernières décennies pour la recherche en physique. Parmi les systèmes…
(more)
▼ L'exploration du monde quantique au moyen d'objets macroscopiques constitue l'un des défis centraux de ces dernières décennies pour la recherche en physique. Parmi les systèmes proposés pour atteindre cet objectif, les systèmes hybrides, qui couplent un résonateur nanomécanique à un qubit unique, font figure de paradigme.L'excitation cohérente d'un oscillateur mécanique macroscopique par un unique spin électronique ouvrirait en particulier de nouvelles perspectives pour la création d'états quantiques arbitraires du mouvement.Dans ce manuscrit, nous considérons un système hybride constitué d'un oscillateur nanomécanique et du spin électronique d'un unique centre NV, couplés entre eux par une interaction magnétique. Nous nous concentrons sur le cas d'une interaction paramétrique où la vibration mécanique module l'énergie du qubit, et plus précisément sur le cas où le qubit ainsi forcé et l'oscillateur mécanique évoluent sur des échelles de temps comparables.Dans cette situation, nos observations montrent une synchronisation de la dynamique du qubit sur l'oscillation mécanique. Le phénomène est dans un premier temps abordé par une expérience-test qui remplace le mouvement mécanique par un champ radiofréquence en couplage paramétrique avec le spin. Cette première implémentation permet de dégager les propriétés essentielles de l'effet paramétrique, qui est dans un second temps observé sur l'expérience principale.Dans cette seconde expérience, un centre NV est attaché à l'extrémité d'un nanofil de carbure de silicium en vibration placé dans un fort gradient de champ magnétique. Le caractère bidimensionnel des déformations du nanofil octroie alors à la synchronisation des signatures vectorielles encore inédites, qui peuvent aussi être interprétées comme la manifestation d'un triplet de Mollow phononique, ainsi qu'il a été observé dans les premières expériences d'électrodynamique quantique.Finalement, nous explorons la robustesse de la synchronisation vis-à-vis du mouvement Brownien du résonateur, et démontrons la possibilité de protéger le qubit de cette source de décohérence additionnelle grâce à une excitation mécanique de faible amplitude.
Probing the quantum world with macroscopic objects has been a core challenge for research in physics during the past decades. Proposed systems to reach this goal include hybrid devices that couple a nanomechanical resonator to a single spin qubit. In particular, the coherent actuation of a macroscopic mechanical oscillator by a single electronic spin would open perspectives in the creation of arbitrary quantum states of motion.In this manuscript, we investigate a hybrid system coupling a nanomechanical oscillator and a single electronic spin of a NV defect in magnetic interaction. We focus on the parametric interaction case, when the mechanical motion modulates the qubit energy, and in particular when the driven qubit and mechanical oscillators evolves on similar timescales. In that situation a synchronization of the qubit dynamics onto the mechanical motion is observed. The…
Advisors/Committee Members: Wernsdorfer, Wolfgang (thesis director), Arcizet, Olivier (thesis director).
Subjects/Keywords: Systèmes hybrides spino-mécaniques; Centre NV; Spin électronique; Nanomécanique; Synchronisation de spin; Etats habillés; Hybrid mechanical quantum systems; Nitrogen Vacancy defect; Electronic spin; Nanomechanics; Spin locking; Dressed states; Coherence protection; 530
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rohr, S. (2014). Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2014GRENY046
Chicago Manual of Style (16th Edition):
Rohr, Sven. “Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique.” 2014. Doctoral Dissertation, Université de Grenoble. Accessed March 06, 2021.
http://www.theses.fr/2014GRENY046.
MLA Handbook (7th Edition):
Rohr, Sven. “Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique.” 2014. Web. 06 Mar 2021.
Vancouver:
Rohr S. Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique. [Internet] [Doctoral dissertation]. Université de Grenoble; 2014. [cited 2021 Mar 06].
Available from: http://www.theses.fr/2014GRENY046.
Council of Science Editors:
Rohr S. Hybrid spin-nanomechanical systems in parametric interaction : Systèmes hybrides spino-mécaniques en interaction paramétrique. [Doctoral Dissertation]. Université de Grenoble; 2014. Available from: http://www.theses.fr/2014GRENY046
University of Otago
4.
Hunter, Matthew Danny James.
Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
.
Degree: University of Otago
URL: http://hdl.handle.net/10523/10479
► We present here a novel framework within which the implementation of sub-Doppler cooling, in prevalent form manifest as polarisation gradient cooling, on atomic systems subsistent…
(more)
▼ We present here a novel framework within which the implementation of sub-Doppler cooling, in prevalent form manifest as polarisation gradient cooling, on atomic systems subsistent in both a free-space regime and one in the presence of a deep, far-off resonant dipole trap, can be fundamentally understood. We develop first a theoretical means through which the predicted presence or absence of atomic cooling, for an arbitrary frequency of an incident cooling field, on the D2 line of Rb-85 can be made. Following such a development, the framework itself is applied to both free-space atomic systems and those under which the imposition of a dipole potential is physically realised, in the pursuit of making transparent the mechanisms governing the integration of polarisation gradient cooling in a diverse array of systems. Excellent agreement is evinced between theory and experiment in all atomic systems investigated, suggesting that the theoretical framework developed provides an adequate description regarding the mechanisms of polarisation gradient cooling pertinent to its implementation on the D2 line of Rb-85
Advisors/Committee Members: Andersen, Mikkel (advisor).
Subjects/Keywords: Polarization gradient cooling;
Atomic physics;
Quantum optics;
Sisyphus cooling;
Quantum mechanics;
Dressed states;
Atomic cooling;
Sub-Doppler cooling
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hunter, M. D. J. (n.d.). Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
. (Masters Thesis). University of Otago. Retrieved from http://hdl.handle.net/10523/10479
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Chicago Manual of Style (16th Edition):
Hunter, Matthew Danny James. “Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
.” Masters Thesis, University of Otago. Accessed March 06, 2021.
http://hdl.handle.net/10523/10479.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
MLA Handbook (7th Edition):
Hunter, Matthew Danny James. “Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
.” Web. 06 Mar 2021.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Vancouver:
Hunter MDJ. Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
. [Internet] [Masters thesis]. University of Otago; [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10523/10479.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Council of Science Editors:
Hunter MDJ. Polarization Gradient Cooling in a Far Off-Resonant Dipole Trap
. [Masters Thesis]. University of Otago; Available from: http://hdl.handle.net/10523/10479
Note: this citation may be lacking information needed for this citation format:
No year of publication.
. 
Open Access Theses and Dissertations