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 20 of 21 for “"Quantum logic"”.
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A quantum logic approach to the addition of spin angular momenta
Call number: LD2668 .T4 1985 S57
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A quantum logic approach to the addition of spin angular momenta
Call number: LD2668 .T4 1985 S57
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MATERIALS CHARACTERIZATION FOR SUB-MICRON SUPERCONDUCTING INTERCONNECTS IN RECIPROCAL QUANTUM LOGIC CIRCUITS
… a considerable amount of energy.Reciprocal Quantum Logic (RQL) is a classical logic family within superconducting electronics, and is a candidate for energy efficient computing technologies. Similar to the current complimentary metal-oxide semiconductor technologies, RQL interconnects are …
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Applications of single-photon two-qubit quantum logic to the quantum information science
… this thesis, I describe demonstration of various quantum information processing tasks using single-photon two-qubit (SPTQ) quantum logic. As an initial state of those tasks, I used various entangled photon pairs, and I describe development of a polarization entangled photon pair source based on a …
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Second Harmonic Generation in Silicon Photonic Crystal Resonators for Quantum Optic Applications
… way of achieving all-photonic classical and quantum logic gates is with dynamically coupled photonic crystal cavities. A silicon architecture that has octave-separated resonances with high quality factor, low mode volume, high nonlinear coupling is implemented in the form of a one dimensional …
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Measurement-based quantum computation with cluster states
In this thesis we describe the one-way quantum computer (QCc), a scheme of universal quantum computation that consists entirely of one-qubit measurements on a highly entangled multi-particle state, the cluster state. We prove universality of the QCc, describe the underlying computational model and …
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Measurement and Quasi-States in Quantum-Mechanics
Part of the task of quantum logic is to account for the collapse of the state vector during measurement. A difficulty in this is that it is not obvious how to describe measurement quantum mechanically as the interaction of two or more systems: interacting quantum mechanical systems do not possess …
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Interpreting Negation: A Semantic Theory of Negation for Standard and Non-Standard Logics
… to the negation operators found in classical logic, quantum logic and some versions of three-valued logic--logics I refer to an 'valent' logics. In particular, each of these operators adheres to the following three constraints: (1) A proposition and its negation cannot intersect in a …
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Towards quantum information processing with diamond color centers
… requirements summarize the key properties that quantum systems should have to be useful for quantum computing. The work in this thesis focuses on one of the leading solid-state quantum systems, the nitrogen vacancy (NV) center in diamond. The NV has emerged as an excellent quantum sensor, in …
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Atomic and molecular ions with photon resonators for quantum information science
… platform for the realization of fault-tolerant quantum information processing (QIP). Much progress with single atomic and molecular ion qubits has been made both in theory and experiment on the fundamental building blocks for scalable QIP architectures. Nonetheless, difficulty still remains for …
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Components for quantum computing based on optical transitions in single quantum dots
… makes them well suited for applications in quantum optics. Semiconductor quantum dots (QDs) are particularly promising, due to their discrete atom-like energy levels. In this thesis, transitions between these energy levels are used to investigate the effects of electric and magnetic fields …
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Engineering coherent control of quantum information in spin systems
Quantum Information Processing (QIP) promises increased efficiency in computation. A key step in QIP is implementing quantum logic gates by engineering the dynamics of a quantum system. This thesis explores the requirements and methods of coherent control in the context of magnetic resonance for: …
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Control of neutral atoms in optical lattices
… are promising candidates to store and manipulate quantum information. In this thesis we examine several problems related to the control of neutral atoms for quantum computation and simulation. In the first problem we show how the transport of atoms in an optical lattice can be controlled through …
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Pure sources and efficient detectors for optical quantum information processing
… and how it can be quantified and manipulated. Quantum information processing extends these lessons to quantum systems, where the properties of intrinsic uncertainty and entanglement fundamentally defy classical explanation. This growing field has many potential applications, including …
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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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Raman Cooling to High Phase Space Density
Experiments on quantum degenerate gasses have become widespread since the first experimental observations of Bose-Einstein condensates (BECs) a few decades ago. Traditionally such experiments have relied heavily on evaporation to produce their quantum degenerate Bose or Fermi gases. Although …
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Coherent Interactions in Rare-Earth-Ion-Doped Crystals for Applications in Quantum Information Science
… cooled rare-earth-ion-doped crystals for quantum information processing and quantum optics. Several aspects of the coherent interaction between light and rare-earth ions in solids are addressed. Quantum information science has given physicists new views of quantum mechanics. The …
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Fermionic Quantum Information in Surface Acoustic Waves
Quantum computers are on the verge of revolutionising modern technology by providing scientists with unparalleled computational resources. With quantum-mechanical phenomena such as the superposition principle and entanglement, these computers could solve certain computational problems that are …
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