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Showing 1 to 20 of 36 for “"Rydberg atoms"”.
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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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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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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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Interactions in an ultracold gas of Rydberg atoms
… of ultralong range interactions <br>in a frozen Rydberg gas. The observed signatures are interactioninduced <br>line broadenings and a suppression of resonant Rydberg excitation. <br>The latter effect can be interpreted as the onset of a local dipole <br>blockade and can be exploited to perform …
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Catalysis of Stark-Tuned Interactions Between Ultracold Rydberg Atoms
… transfer between ultracold <sup>85</sup>Rb Rydberg atoms. We have investigated the energy transfer process of 34<em>p</em> + 34<em>p</em> → 34<em>s</em> + 35<em>s</em>, and observed Stark-tuned Forster resonances. When additional Rydberg atoms of 34<em>d</em> state are included in the …
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Coherent control of Rydberg atoms using sub-kHz linewidth excitation lasers
… for neutral atom quantum computing with Rydberg atoms. We describe the construction and characterisation of three continuous wave lasers stabilised simultaneously on a ultrahigh finesse Ultra-low-expansion (ULE) cavity, providing long-term stability and sub-kHz linewidth lasers with a …
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Rydberg atoms in strong fields : a testing ground for quantum chaos
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Rydberg atoms in an oscillating field : extracting classical motion from quantum spectra
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Experimental and theoretical aspects of quantum chaos in Rydberg atoms in strong fields
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Quantum dynamics of ultracold atoms in inhomogeneous magnetic fields : from ground state atoms to Rydberg atoms
… of the quantum dynamics of ultracold atoms in the presence of external inhomogeneous magnetic fields. We discuss the behavior of ground state atoms inside typical magnetic field configurations. Such atoms can be approximately treated as neutral point-like particles which carry a …
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A STUDY OF LOW ENERGY ELECTRON-MOLECULE AND ION-MOLECULE COLLISIONS USING RYDBERG ATOMS (IONIZATION, ASSOCIATION, ATTACHMENT, OXYGEN, WATER)
Low energy collisions between Rydberg atoms and neutral molecules have been investigated over a wide range of principal quantum numbers n, and for several different neutral targets. The results have been used to validate the free-electron, independent particle model of Rydberg atom collisions. …
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Experimental Investigation of Long-Lived "ZEKE" Rydberg States in Ultracold Argon
… the dynamics of ultracold plasmas and ultracold Rydberg gases. Ultracold plasmas are typically formed by photo-excitation of ultracold atoms to an energy region near (both above and below) an ionization threshold. Excitation to bound, highly-excited Rydberg states can lead to formation of a …
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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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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 …
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Experimental demonstration of high-fidelity entanglement via Rydberg blockade
The strong dipole interactions of Rydberg atoms are ideal candidates to facilitate interactions between neutral atoms to generate entanglement for quantum information processing. This offers the potential to scale to large atom arrays through well established techniques for neutral atoms, …
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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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Coherent atom-light interactions in multi-level systems
… resonances to absorbing resonances possible. Rydberg EIT is then introduced and is used to shown how the switching of such resonances using external electric fields in possible. The work then progresses towards the use of thin vapour cells to overcome the limitations of conventional systems. …
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