Search for dissertations about: "single ion"

Showing result 1 - 5 of 374 swedish dissertations containing the words single ion.

2. 1. Ion Tracks for Micro- and Nanofabrication : From Single Channels to Superhydrophobic Surfaces

   Author : Reimar Spohr; Lars Westerberg; Lars Montelius; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ion track; single ion; real time; phase detection; conductometric cell; conductometry; electro replication; microtechnology; nanotechnology; surfactant; self organization; GMR; magnetic; sensor technology; hydrophobic; tilted texture.; Physics; Fysik; Materialvetenskap; Materials Science;

   Abstract : A method is described for preset-count irradiations between 1 and 100 ions singling-out individual ions from an ion beam with more than a billion ions arriving per second. The ion tracks are etched in a conductometric system with real-time evaluation of the acquired data. The etch process can be interrupted when reaching a preset channel diameter. READ MORE

4. 2. Towards Single-Ion Detection and Single-Photon Storage in Rare-Earth-Ion-Doped Crystals

   Author : Mohammed Alqedra; NanoLund: Centre for Nanoscience; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Single-ion detection; microcavities; quantum memory; rare-earth-ion-doped crystals; Fysicumarkivet A:2022:Alqedra;

   Abstract : Solid materials doped with rare-earth ions are considered an attractive platform for quantum information applications. One of the main reasons for this is the exceptionally long optical and hyperfine coherence times of the 4fn states, due to the shielding provided by the outer lying 5s and 5p electrons. READ MORE

5. 3. A single trapped Rydberg ion

   Author : Gerard Higgins; Markus Hennrich; Tilman Pfau; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Trapped ions; Rydberg physics; quantum information platforms; atomic physics; fysik; Physics;

   Abstract : Systems of trapped ions and systems of ultracold Rydberg atoms are used at the forefront of quantum physics research and they make strong contenders as platforms for quantum technologies. Trapped Rydberg ions are a new hybrid technology envisaged to have both the exquisite control of trapped ion systems and the strong interactions of Rydberg atoms. READ MORE

6. 4. Towards single Ce ion detection in a bulk crystal for the development of a single-ion qubit readout scheme

   Author : Ying Yan; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2013:Yan; Ultra-violet laser spectroscopy; Single ion detection; Rare-earth-ion-doped crystals; Quantum computing; Laser stabilisation;

   Abstract : The work presented in this thesis was concerned with investigating the relevant spectroscopic properties of Ce ions randomly doped in an Y2SiO5 crystal at low temperatures (around 4 K), in order to develop a technique and an experimental set-up to detect the fluorescence photons emitted by a single Ce ion. The aim of the work was to determine whether a single Ce ion (referred to as the readout ion) can be used as a local probe to sense the quantum state of a neighbouring single-ion qubit via a state-selective interaction between the readout and qubit ion. READ MORE

7. 5. Theoretical Investigations of the Role of Ion-Ion Correlations and Ion-Specific Interactions in Electric Double Layers

   Author : Erik Wernersson; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electric double layers; Electrolyte solutions; Ion-ion correlations; Dispersion forces; Colloidal interactions; Charge inversion; Continuum models;

   Abstract : Electric double layers are ubiquitous, arising in some form in almost every situation involving an interface with an aqueous electrolyte solution. In order to gain insight into the behavior of electrolytes and electric double layers, simple models of bulk and inhomogeneous electrolyte solutions are considered in this thesis. READ MORE