Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"rubidium atoms"”.
-
Manipulation and control of ultra-cold rubidium atoms
… been designed and implemented to confine neutral atoms in microscopic dipole traps and to manipulate their internal states by laser excitation to Rydberg states. A lot of effort was devoted to the stabilization of the laser sources for two-photon excitation to the Rydberg states, using techniques …
-
Loading rubidium atoms into a hollow core fiber
… for cooling, trapping, and transferring rubidium atoms into a hollow core photonic band gap fiber. The atoms are first collected in a magneto-optical trap (MOT) and then cooled using polarization gradient cooling. Magnetic traps are then used to confine and transfer the atoms toward the …
-
Laser cooling of rubidium atoms in a magneto-optical trap
… experimental work concerning radiation forces on atoms, with particular reference to rubidium atoms confined in a magneto-optical trap. After a short history of the field of laser cooling, a review of the semiclassical theory of mechanical interactions between two-level atoms and electromagnetic …
-
State-selective imaging of single rubidium atoms in a solid neon matrix
… dissertation discusses our progress toward using rubidium atoms trapped in solid neon as single-atom quantum sensors. The process of doping rare-gas solids allows for the co-trapping of arbitrary atoms and molecules, which is an advantage for nanoscale sensing. The dopants can also be buried …
-
Investigation of Ultracold Rubidium Atoms in a Pulsed Far off Resonance Trap
… trap which uses laser light to confine ultracold rubidium (Rb) atoms. Because the laser frequency is detuned far from the atomic resonance frequency, the optical dipole force trap is also called a "far-off-resonance trap" (FORT). The use of pulsed laser light to create an optical trap may find …
-
Spectroscopic Study of Ultracold Rubidium Atoms in an Optical Dipole Force Trap
<p>The interaction of light with atoms and molecules is of fundamental interest in many branches of science. In atomic physics, this interaction can be used to cool and spatially confine (trap) atoms. These traps can be used as the starting point for other experiments, but the dynamics of the …
-
Probing and preparing novel states of quantum degenerate rubidium atoms in optical lattices
Ultracold atoms in optical lattices are promising systems to realize and study novel quantum mechanical phases of matter with the control and precision offered by atomic physics. Towards this goal, as important as engineering new states of matter is the need to develop new techniques to probe these …
-
Fine-structure mixing in 9 (2)D rubidium atoms by collisions with ground-state rubidium and noble gas atoms.
Dept. of Physics. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1988 .M255. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.Sc.)--University of Windsor (Canada), 1988.
-
Optical Pumping of Rubidium Spin in a Solid Argon Matrix
… the matrix isolation technique we have trapped rubidium atoms inside a cryogenic solid argon crystal of thickness 200 µm. This weakly-interacting solid offers the experimental simplicity and high densities of solid-state systems, while allowing the implanted atoms to retain many of the …
-
Resonant Dipole-Dipole Energy Transfer Dynamics in a Frozen Rydberg Gas
… strongly couples ultracold highly excited atoms, known as Rydberg atoms, and is the dominant mechanism for energy exchange among such atoms on microsecond time scales. I present the results of experiments that investigate this interaction using rubidium atoms excited to Rydberg states with …
-
Novel schemes for the optical manipulation of atoms and molecules
The range of atoms which can be cooled by lasers is limited to those which have a closed two level structure. Several schemes have been proposed which aim to extend this range by using coherent control of the particle momenta, but none have yet been demonstrated. We hope to implement these and …
-
Coherent matter waves near surfaces
Neutral atoms can be trapped and manipulated on microscopic scales near surfaces of atom chips. The work covered by this thesis includes the development and test of microscopic atom optical tools. An omni-directional magnetic matter wave guide and novel types of magneto-electric trapping potentials …
-
Designing a modified Zeeman slower for the Paschen-Back magnetic regime
… highly magnetized, high density plasmas using rubidium atoms. By replacing the atom source with a Zeeman slower, a well-studied device to slow and cool atoms, the atom flux could be increased by a factor more than 1000, leading to higher High-B plasma densities. The goal of this project is to …
-
On-Chip Atomic Spectroscopy
… solid and hollow core waveguides integrated with rubidium vapor cells was developed. A variety of sealing techniques were tested for vapor cell integration with the ARROW chip and for compatibility with rubidium. Rubidium was used because it is of particular interest for studying quantum coherence …
-
Four-wave mixing with hermite-gauss modes in rubidium vapor
… wave diode laser to excite a sample of Rubidium atoms, on the ⁸⁵Rb D2 line, tuned to the frequency of the 5²S_(1/2) (𝐹 = 3) → 5²P_(3/2) transition. With a Spatial Light Modulator, we were able to split the laser beam in two and structure them in the desired modes. These two beams, A and …
-
Intrinsic Quantum Thermodynamics: Application to Hydrogen Storage on a Carbon Nanotube and Theoretical Consideration of Non-Work Interactions
… experiment deals with the spin relaxation of rubidium atoms and the second tests the relaxation behavior of single trapped ion that is allowed to interact with an external heat reservoir. Good agreement between experiment and the model predictions is found.
-
Molecular beam studies of excitation and electron transfer reactions
… for collisional ionization between potassium and rubidium atoms and some molecules. From the thresholds, electron affinities for SF$\sb6$ and CF$\sb3$Br and the bond dissociation energy for the CH$\sb3$Br bond could be obtained. These values were in good agreement with the literature values, …
-
Development Of A Cold Atoms Platform For A DQC1 Implementation
… we report on the development progress of a cold atoms platform to demonstrate a model of quantum computation known as deterministic Quantum computing with One Clean Qubit (DQC1). This is a novel class of algorithms where interactions between qubits enable nonclassical correlations other than …
-
Optical micro- and nanofibres: Higher mode generation and particle manipulation studies
… such higher-mode nanofibre into a cloud of cold Rubidium atoms. This led to the detection of stronger signals of resonance fluorescence coupling into the nanofibre and for light absorption by the atoms due to the presence of higher guided modes within the fibre. Theoretical work on the impact of …
-
Semiconductor-generated entangled photons for hybrid quantum networks
… quantum memories can be realized using alkali atoms such as rubidium. Leading in the deterministic generation of single photons and polarization entangled photon pairs are semiconductor InAs/GaAs quantum dots grown by the Stranski-Krastanov method. Despite remarkable progress in the last twenty …