Exploring the foundation of quantum information in quantum optics
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 the promises of quantum information has already been demonstrated in different implementations, which could also be viewed as witness of quantum mechanics. As we progress further in quantum information, we find that some of the aspects of quantum mechanics could be tested in a novel way. Performing those tests may lead to new physical theory or at least reinforce our belief of the accuracy of quantum mechanics. In this thesis, I report a few different approaches in testing the foundation of quantum mechanics using results obtained from quantum optics. While developing such test, quantum state tomography is heavily used to characterize our system. I also report a simplified way of performing quantum state tomography for quantum state that is close to pure state.
Showing items related by title, author, creator and subject.
Ouyang, Yingkai (University of Waterloo, 2013-05-01)Transmitting quantum information across quantum channels is an important task. However quantum information is delicate, and is easily corrupted. We address the task of protecting quantum information from an information ...
Topics on the information theoretic limits of quantum information processing and its implementation Raeisi, Sadegh (University of Waterloo, 2015-02-24)Recent advances in quantum technologies enabled us to make large quantum states and pushed towards examining quantum theory at the macroscopic level. However observation of quantum e ects at a macroscopic level still ...
Ried, Katja Stephanie (University of Waterloo, 2016-05-18)Quantum mechanics has achieved unparalleled success as an operational theory, describing a wide range of experiments to remarkable accuracy. However, the physical foundations on which it rests remain as puzzling as they ...