Browsing Science (Faculty of) by Subject "Quantum optics"
Now showing items 1-10 of 10
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Direct generation of three-photon entanglement using cascaded downconversion
(University of Waterloo, 2013-12-06)High quality entangled photon sources are a key requirement for many promising quantum optical technologies. However, the production of multi-photon entangled states with good fidelity is challenging. Current sources of ... -
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 ... -
Measuring Quantum Correlations of Polarization, Spatial Mode, and Energy-Time Entangled Photon Pairs.
(University of Waterloo, 2023-09-07)Optical quantum technologies have found applications in all facets of quantum information. Single photons are actively being researched for quantum computation, communication, and sensing, due to their robustness against ... -
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 ... -
Study of realistic devices for quantum key-distribution
(University of Waterloo, 2011-10-03)Quantum key-distribution (QKD) is a scheme for establishing shared secret key between remote parties. In such a scheme, quantum preparation and measurement devices (sources and detectors) are used. In existing theoretical ... -
Subspace Control of Nitrogen Vacancy centers at Zero Field
(University of Waterloo, 2020-01-24)Nitrogen-Vacancy centers negatively charged (NV-) are spin-1 objects in diamond. In the absence of a magnetic field, two of its levels are degenerate, which is why a field is often used to lift the degeneracy and allow ... -
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 ... -
Ultrafast manipulation of single photons using dispersion and sum-frequency generation
(University of Waterloo, 2016-12-01)Single photons provide a natural platform for quantum communication and quantum networking, as they can be entangled in many degrees of freedom and maintain coherence over long-distance links. However, while their minimal ... -
Ultrafast Metrology in the Quantum Domain
(University of Waterloo, 2019-02-15)Single photons are a natural platform for quantum technologies as they support entanglement in many degrees of freedom and are inherently well protected from a detrimental type of noise called decoherence. In order to ... -
The Unruh-DeWitt Detector Model: Modified Dispersion and Nonlinear Couplings
(University of Waterloo, 2021-09-30)In this work, we employ the Unruh-DeWitt (UDW) detector model to various ends. We present applications of this relativistic detector model to quantum optics, including decoherence in optical cavities and non-linear quantum ...