Browsing Science (Faculty of) by Subject "Quantum information"
Now showing items 1-11 of 11
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Ablation loading and qudit measurements with barium ions
(University of Waterloo, 2023-08-31)Barium is one of the best ions for performing quantum information in a trapped-ion system. Its long-lived metastable D5/2 state allows for some interesting quantum operations, including the current best state preparation ... -
Augmenting Quantum Mechanics with Artificial Intelligence
(University of Waterloo, 2018-12-04)The simulation of quantum matter with classical hardware plays a central role in the discovery and development of quantum many-body systems, with far-reaching implications in condensed matter physics and quantum technologies. ... -
Electron transport in semiconducting nanowires and quantum dots
(University of Waterloo, 2017-01-10)Single electrons confined in electrostatic quantum dots are a promising platform for realizing spin based quantum information processing. In this scheme, the spin of each electron is encoded as a qubit, and can be manipulated ... -
Exploring the foundation of quantum information in quantum optics
(University of Waterloo, 2016-09-21)Quantum information is promising in solving certain computational problems and information security. The power of its speed up and privacy is based on one of the most tested physical theory: quantum mechanics. Many of ... -
New methods in quantum error correction and fault-tolerant quantum computing
(University of Waterloo, 2018-10-22)Quantum computers have the potential to solve several interesting problems in polynomial time for which no polynomial time classical algorithms have been found. However, one of the major challenges in building quantum ... -
Novel Heat-Bath Algorithmic Cooling methods
(University of Waterloo, 2020-08-20)The field of quantum information has inspired new methods for cooling physical systems at the quantum scale by manipulating entropy in an algorithmic way, such as heat-bath algorithmic cooling (HBAC). These methods not ... -
Photons & Phonons: A room-temperature diamond quantum memory
(University of Waterloo, 2016-08-19)This thesis presents demonstrations of the storage and manipulation of single photons in a room-temperature diamond quantum memory using a Raman memory protocol. We report on results from four experiments. In the first ... -
Quantum Information Enabled Neutron Interferometry
(University of Waterloo, 2017-06-12)Neutron interferometry with its ability to encode and extract information provides a test bed for quantum mechanics and precise measurement of physical quantities of significant importance in physics. However, this ... -
The Roles of Causal Propagator in Relativistic Quantum Information
(University of Waterloo, 2023-05-29)This thesis focuses on the roles of causal propagator — the expectation value of the field commutator — in relativistic quantum information. Consider two observers Alice and Bob, each carrying a two-level quantum system ... -
Symmetric Extendability of Quantum States and the Extreme Limits of Quantum Key Distribution
(University of Waterloo, 2016-10-13)We investigate QKD protocols with two-way classical post-processing that are based on the well-known six-state and BB84 signal states. In these QKD protocols, the source (Alice) sends quantum signals to the receiver (Bob), ... -
Testing classical and quantum theory with single photons
(University of Waterloo, 2018-01-19)To date, quantum theory is the most successful physical theory that has been discovered. However, there is still the possibility that an inconsistency between experimental observations and the predictions of quantum theory ...