Essays about: "Rare-earth ion quantum computing"

Showing result 1 - 5 of 8 essays containing the words Rare-earth ion quantum computing.

1. 1. Active stabilisation of a micro-sized fibre cavity using tilt locking to enable quantum operations on single ions

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Jannek Hansen; [2021]
   Keywords : Quantum computation; optical cavity; microcavity; locking; tilt locking; cavity stabilization; Gaussian-Hermitian modes; quantum computer; higher-order transverse modes; Physics and Astronomy;

   Abstract : In this thesis, the tilt locking scheme is applied to create an error signal that monitors length changes in a fibre-based microcavity. To find a robust and precise locking technique is an essential step towards quantum operations on single rare-earth ions doped in microcrystals. Quantum computing and information is a frontier of modern physics. READ MORE

3. 2. A Fabry–Pérot Cavity for Rare-Earth-Ion-Doped Nanocrystals

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Andre Nüsslein; [2019]
   Keywords : Quantum Computer; Rear Earth Ions; Cavity; Laser; Cavity Quantum Electrodynamics; QED; Solidworks; Physics and Astronomy;

   Abstract : This thesis work contributes to the effort of detecting single rare earth ions doped into crystals, an operation crucial for the development of rare earth quantum computer hardware. Doping crystals with rare earth elements, their trivalent ions substitute some of the crystal’s original bonds. READ MORE

4. 3. Single Ion Detection of Cerium in Y2SiO5 Microcrystals

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Vassily Kornienko; [2019]
   Keywords : cerium; YSO; rare-earths; quantum computing; microcrystals; Physics and Astronomy;

   Abstract : Quantum computing with single instances of rare earth-ions doped into inorganic crystals shows great promise as a scalable design in the field of quantum information. A detectable and controllable single readout ion is necessary for the scheme proposed in Lund to work. READ MORE

5. 4. Sensitivity of Various Qubit Detection Methods in Pr:Y2SiO5

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Author : Vassily Kornienko; [2017]
   Keywords : Rare-earth ion quantum computing; Pr:Y2SiO5; Physics and Astronomy;

   Abstract : The long coherence times of the 4f hyperfine levels of rare-earth-ions gives the possibility to use these as quantum computation devices. Moreover after being doped into a crystal the strong dipole-dipole interaction can be utilized to entangle them. Much work has been done here in Lund to attain as many of the DiVincenzo criteria as possible. READ MORE

6. 5. Influence of Ion-Ion Interactions on Single Qubit State Transfer Fidelities

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Author : Sofia Borgå; [2015]
   Keywords : Physics and Astronomy;

   Abstract : Experimental single qubit gate fidelities in the rare-earth quantum computing (REQC) scheme was found to be lower than predicted by simulation of the optical Bloch equations for the system. The cause was believed to be excitation-induced frequency shifts (EFS), so this BSc thesis investigates a model for EFS in Eu:YSO where stochastic frequency shifts are imposed on the ions. READ MORE