Masters Degrees (Physics)
http://hdl.handle.net/10413/6604
2019-01-24T12:26:24ZPhoto-switching of dabcyl modified silicon microwire field effect transistors.
http://hdl.handle.net/10413/15731
Photo-switching of dabcyl modified silicon microwire field effect transistors.
Abstract available in PDF file.
Masters of Science in Physics. University of KwaZulu-Natal, Durban 2017.
2017-01-01T00:00:00ZDevelopment of a post-processing technique for a Quantum Key Distribution system.
http://hdl.handle.net/10413/15723
Development of a post-processing technique for a Quantum Key Distribution system.
Quantum Information, Processing and Communication (QIPC) is a field concerned
with technological implementations established on quantum mechanical
phenomena. It is established on the concept that the action of manipulating
information is controlled by the quantum physical effects. Therefore,
quantum information can be characterised, quantified and processed as a
physical body applying laws of quantum mechanics. QIPC consists of two
major disciplines, quantum computing and quantum communication.
Communication is bound by the transfer of information. Quantum communication
applies some of the fundamental features of quantum mechanics,
such as, the superposition principle and the Heisenberg uncertainty principle
to protect the transfer of information. One of the most advanced quantum
information related technology at present is Quantum Key Distribution
(QKD). It is defined as a process of encoding information into a quantum
carrier in the form of single photons and distribute that information amongst
legitimate entities.
Masters of Science in Physics. University KwaZulu-Natal, Durban. 2017.
2017-01-01T00:00:00ZNumerical simulations of fundamental light-matter interactions.
http://hdl.handle.net/10413/15716
Numerical simulations of fundamental light-matter interactions.
We present the results of the numerical investigations of light-matter interactions in
one and two dimensions from the quantum mechanical perspective. We investigate the
dynamics of two-level systems coupled to quantized electromagnetic fields. We construct
a quantum mechanical model to demonstrate how light interacts with classical
objects such as mirrors and beam-splitters made from group of atoms, where each atom
is modelled as a two-level system. We have been able to simulate behaviour of a singlephoton
being reflected
and transmitted as a process of absorption and re-emission by
the atoms.
Masters of Science in Physics. University KwaZulu-Natal, Durban 2017.
2017-01-01T00:00:00ZQuantum Key Distribution for the undergraduate curriculum.
http://hdl.handle.net/10413/15715
Quantum Key Distribution for the undergraduate curriculum.
Quantum Key Distribution (QKD) is one of the technological applications of
quantum mechanics. The technology allows two users to securely establish
an unbreakable key. The key is used to encrypt and decrypt sensitive information
such as online banking and emails. This technological application has
matured in an industry as it provides real world implementation. It offers
a provably secure key based on the principles of quantum mechanics. There
are products that are available that can be used to implement this technology.
This study demonstrates the implementation of the QKD process for the
undergraduate physics curriculum. We outline the procedure of QKD in
a convenient way for students to follow and understand. To this end, a
comprehensive manual has been developed to enable undergraduate students
to learn the foundations of QKD. Students will gain knowledge that using
quantum mechanical properties, two remote parties can securely establish a
communication by exchanging keys which can then be used as an encryption.
We present the QKD system such as the id 3000 as a learning tool in the
physics 3rd-year laboratory, to introduce undergraduate students to applications
in quantum information science. We demonstrate a typical experiment
which undergraduate students can perform using the id 3000 system in the
3rd physics laboratory. Our vision is to see students exploring quantum mechanics
in more depth and learning practical work alongside theories taught
in the curriculum.
Master of Science in Physics. University of KwaZulu-Natal, Durban 2017.
2017-01-01T00:00:00Z