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 10 of 10 for “"hyperfine levels"”.
-
The thermal conductivity of double nitrate crystals below 1 K
… to electronic transitions between the magnetic hyperfine levels. The splitting, in zero external magnetic field, between the hyperfine levels in the Pr+3 ion inCMN is 0.048 K. This splitting in the Ho+3 ion inLMN is estimated to be on the order of or less than 0.03 K.
-
Novel schemes for the optical manipulation of atoms and molecules
… collected in a magneto-optical trap. The lower hyperfine levels of these cold atoms very closely mimic the ideal two-level atom, and we use carefully crafted laser pulses to prepare, manipulate, and read their quantum state. The hyperfine levels are coupled using two fields whose frequency …
-
An ultracold gas of dipolar fermionic ²³Na⁴⁰K molecules
… Coherent microwave control of rotational and hyperfine states of ²³Na⁴⁰K ground state molecules is demonstrated. In particular, we observe long coherence times of the molecular sample approaching one second in a superposition of two hyperfine levels in the singlet rovibrational ground state. …
-
Quantum computing with naturally trapped sub-nanometre-spaced ions
… as a superposition between two ground state hyperfine levels, the interaction is turned off. The interaction is turned on selectively by transferring this superposition to the optical transition with a pi-pulse, for the specific ions that are to interact. This thesis describes how peaks of …
-
Investigation of quantum information storage in rare earth doped materials
… Long coherence times in both the optical and hyperfine levels have been observed as well as optical manipulation of the nuclear spin states. The rare earth ions of interest also possess a linear Stark shift which is essential for the quantum memory under investigation here. The scheme …
-
Investigation of quantum information storage in rare earth doped materials
… Long coherence times in both the optical and hyperfine levels have been observed as well as optical manipulation of the nuclear spin states. The rare earth ions of interest also possess a linear Stark shift which is essential for the quantum memory under investigation here. The scheme …
-
Measurement of Hyperfine Coupling Constants of the 5d²D₃/₂ and 5d²D₅/₂ Levels in Atomic Cesium Using Polarization Quantum Beat Spectroscopy
<p>Accurate measurements of hyperfine constants have revealed effects that can not be explained by a simple hydrogenic picture of the alkali atoms such as cesium [1-3]. More precise experimental results and theoretical treatments are in demand for the alkali elements, especially for atomic cesium …
-
Control of neutral atoms in optical lattices
… microwave pulses that drive population between hyperfine levels in a lin-perp-lin polarization-gradient lattice. By measuring the amount of population transferred into certain excited states, we can detect changes in the spectrum of the two-atom system induced by the interaction. In the third …
-
Quasi-One-Dimensional Ultracold Fermi Gases
… This experiment uses the lowest two ground state hyperfine levels of fermionic lithium. Having two different states creates a pseudo-spin-1/2 system and allows us to emulate electronic systems, such as superconductors and crystal lattices. In our experiment, we can control the ratio between these …
-
Crystal and spin structure and their relation to physical properties in some geometrical and spin spiral multiferroics
… can be very well described in terms of lattice, hyperfine and crystal field interaction contributions. From the specific heat data the contributions from lattice, hyperfine and crystal field interactions was determined. The hyperfine field at Ho site and the hyperfine splitting energy are …