Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Quantum process tomography"”.
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Cumulative effects in quantum algorithms and quantum process tomography
This thesis comprises three results on quantum algorithms and quantum process tomography. In the first section, I create a tool that uses properties of the quantum general adversary bound to upper bound the query complexity of Boolean functions. Using this tool I prove the existence of O(1)-query …
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High-Dimensional Quantum Information: From Sensing to Underwater Quantum Communication
Quantum information has become an exciting field of research in the last 20 years, as experimental advancements allow us to control, manipulate, and detect states of quantum systems. A subset of this field studies the application of high-dimensional quantum states in communication, computing, and …
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The quantum Fourier transform and quantum chaos
In this thesis I study control of quantum systems while implementing complex quantum operations. Through experimental implementations of such operations, I test the accuracy of control and provide methods for identifying the type and strength of experimental errors. The centerpiece of this work is …
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Testing the limits of nonlocality
The nascent field of quantum information offers the promise of dramatic speed increases for certain types of computation and logical protocols which are classically impossible. The phenomenon of nonlocality is fundamental to this study, and polarization-entangled photons o er a clean, bright, and …
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Quantum Detector and Process Tomography: Algorithm Design and Optimisation
… new algorithms and investigates optimisation in quantum detector tomography (QDT) and quantum process tomography (QPT). QDT is a fundamental technique for calibrating quantum devices and performing quantum engineering tasks. We design optimal probe states based on the minimum upper bound of the …
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Quantum gates, sensors, and systems with trapped ions
Quantum information science promises a host of new and useful applications in communication, simulation, and computational algorithms. Trapped atomic ions are one of the leading physical systems with potential to implement a large-scale quantum information system, but many challenges still remain. …
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Single and multi-exciton dynamics in nanoscale semiconductors
… and recovery of nanotubes in the solid state. Quantum process tomography is used to unambiguously elucidate the single-exciton dynamics of J-aggregate nanotubes in solution. Inversion of spectroscopic signals from eight transient grating experiments completely characterizes the time evolution …
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Telecom Wavelength Quantum Devices
Semiconductor quantum dots (QDs) are well established as sub-Poissonian sources of entangled photon pairs. To improve the utility of a QD light source, it would be advantageous to extend their emission further into the near infrared, into the low absorption wavelength windows utilised in long-haul …