Electrical Control, Read-out and Initialization of Single Electron Spins

An electron, in addition to its electric charge, possesses a small magnetic moment, called spin. The spin of an electron can point parallel (spin-up) or antiparallel (spin-down) to the magnetic field. These two states are analogous to zero and one of the logical bit in current digital electronic devices. However, according to the laws of quantum...

Coherent Coupling of Qubits in Small Quantum Dot Arrays

The coherent coupling of electron charges and spins is investigated in small quantum dot arrays.

Quantum control and coherence of interacting spins in diamond

The field of quantum science and technology has generated many ideas for new revolutionary devices that exploit the quantum mechanical properties of small-scale systems. Isolated solid state spins play a large role in quantum technologies. They can be used as basic building blocks for a quantum computer or as ultra-sensitive magnetic-field...

On the Quantum Measurement of Superconducting Flux Qubits

Electron Spins in Semiconductor Quantum Dots

This thesis describes a series of experiments aimed at understanding and controlling the behavior of the spin degree of freedom of single electrons, confined in semiconductor quantum dots. This research work is motivated by the prospects of using the electron spin as a quantum bit (qubit), the basic building block of a quantum computer. Here,...