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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 122 for “"Rydberg"”.
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Strongly interacting photons via Rydberg-Rydberg interactions
… by coupling the photons to highly polarizable Rydberg states with a phenomena called electromagnetically induced transparency (EIT). The strong van der Waals or dipole-dipole interactions between Rydberg excitations map to the photons under EIT conditions. The photons are incident on a …
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Millimeter-wave dynamics and control of Rydberg-Rydberg transitions
… enough to allow for coherent manipulation of Rydberg states and a coherent coupling of an optical and millimeter-wave photon. I demonstrate this coherent coupling in an ensemble of barium atoms, and provide a theoretical description of how to provably perform complete STImulated Raman …
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Direct observation of Rydberg-Rydberg transitions via CPmmW spectroscopy
Rydberg-Rydberg transitions of BaF molecules have been directly observed in our lab. The key to the experimental success is our ability to combine two powerful and new technologies, Chirped-Pulse millimeter-Wave spectroscopy (CPmmW) and a buffer gas cooled molecular beam source. CPmmW spectroscopy …
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Rydberg atom diamagnetism
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1988.
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Chirped-pulse millimeter-wave spectroscopy, dynamics, and manipulation of Rydberg-Rydberg Transitions
… technique is applied to transitions between Rydberg states, and calcium atoms are used as the initial test system. The unique feature of Rydberg{Rydberg transitions is that they have enormous electric dipole transition moments: ~5 kiloDebye at n* ~45, where n* is the eective principal quantum …
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Rydberg atom networks for quantum technologies [Reti atomiche Rydberg per le tecnologie quantistiche]
Gli atomi di Rydberg sono destinati a diventare validi candidati per il progresso delle tecnologie quantistiche. Il loro principale vantaggio risiede nelle forti interazioni dipolari tra più atomi, che portano a fenomeni come la “blockade" e la facilitazione di Rydberg. Oltre a queste notevoli …
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A cold strontium Rydberg gas
Cold gases of Rydberg atoms are an ideal system in which to study the novel effects of strong interatomic interactions. This thesis describes the design and construction of the world's first experiment to study Rydberg states in a cold gas of an alkaline earth metal, in this particular case …
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Rydberg spectroscopy of calcium monofluoride
… non-bonding electron in the outer orbital. Their Rydberg spectra will reveal the Rydberg e⁻ <--> ion-core interaction in the simplest case. This thesis presents the experimental results of Calcium Monofluoride (CaF) in the n* = 17 to 18, v⁺ = 1 autoionizing region, of which the OODR …
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Rydberg spectroscopy of barium monofluoride
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Optical imaging of Rydberg atoms
… induced transparency (EIT) in Rydberg atoms in order to observe optical nonlinearities at the single photon level. ⁸⁷Rb atoms are trapped and cooled using a magneto-optical trap (MOT) and a far off resonance dipole trap (FORT). Once the system is prepared, a ladder EIT scheme …
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High Angular Momentum Rydberg Wave Packets
High angular momentum Rydberg wave packets are studied. Application of carefully tailored electric fields to low angular momentum, high- n ( n ∼ 300) Rydberg atoms creates coherent superpositions of Stark states with near extreme values of angular momentum, [cursive l]. Wave packet components orbit …
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Alkali Rydberg States in Electromagnetic Fields
… study highly excited hydrogen and alkali atoms (’Rydberg states’) under the influence of a strong microwave field. As the external frequency is comparable to the highly excited electron’s classical Kepler frequency, the external field induces a strong coupling of many different quantum mechanical …
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ELECTRIC FIELD IONIZATION OF SODIUM RYDBERG ATOMS
The outer electron of a Rydberg atom is so weakly bound to the atomic core that a relatively small electric field may cause the electron to be stripped from the atom. The field strength at which this ionization happens is strongly dependent on the state of the Rydberg atom. Pulsed electric field …
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Excitation Spectroscopy of Krypton Molecular Rydberg States
… 480 (LESSTHEQ) (lamda) (LESSTHEQ) 545 nm, and Rydberg series of krypton dimers have been observed. The most pronounced peaks in the spectrum have been attributed to np('3)(PI)(,g) (<---) 5s('3)(SIGMA)(,u)('+) (7 (LESSTHEQ) n (LESSTHEQ) 18) transitions. The series limit and quantum defect, …
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Inter-Rydberg excitation spectroscopy of krypton dimers
An excitation spectrum of the krypton dimer 6p$\sp3\Pi\sb{\rm g}(0\sbsp{g}{-})$ $\gets$ 5s$\sp3\Sigma\sbsp{\rm u}{+}(1\sb{\rm u}$, 0$\sbsp{\rm u}{-})$ transition has been observed over 525 nm $\leq$ $\lambda$ $\leq$ 545 nm. An argon fluoride excimer laser was used to excite the atomic krypton 6p …
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Quantum simulations in interacting Rydberg synthetic dimensions
… realization of synthetic dimensions using Rydberg atom arrays as a novel and flexible platform for quantum simulation. By coherently coupling a discrete set of Rydberg states via engineered microwave (MW) fields, we construct synthetic lattices in which internal atomic states serve as …
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Millimeter-wave studies of hydrogen Rydberg states
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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Probing nonlocal correlations with ultralong-range Rydberg molecules
… in ultracold atomic gases using ultralong-range Rydberg molecules. We will present a description of the relevant experimental apparatus and techniques developed for laser cooling and trapping ultracold mixtures of Sr, and a brief theoretical discussion on the relationship between the pair …
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Ionization of Rydberg Atoms at Patterned Electrode Arrays
… controlled surface fields on the ionization of Rydberg atoms near surfaces. Lithographically-patterned micrometer scale electrode arrays are used to generate controlled surface electric fields. The data show that application of even small electrode biases (~±1V) can lead to a transition from …
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Ultracold Rydberg Atoms in Structured and Disordered Environments
The properties of a Rydberg atom immersed in an ultracold environment were investigated. Two scenarios were considered, one of which involves the neighbouring ground-state atoms arranged in a spatially structured configuration, while the other involves them distributed randomly in space. To …
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