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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 176 for “"Quantum computation"”.
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Dissecting topological quantum computation
… of these have been considered as a means for quantum computation, but non-Abelian anyons are usually assumed to be better suited to the task. Here we challenge this view, demonstrating that Abelian anyon models have as much potential as some simple non-Abelian models. First the means to …
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Multi-party quantum computation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Physical challenges of quantum computation
… of several physical challenges for building a quantum computer, a hypothetical device which is capable of accomplishing tasks unachievable by the classical model of computation. In chapter 1, we will give an overview of quantum computation and discuss the physical challenges for building a …
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Alternative models for quantum computation/
We propose and study two new computational models for quantum computation, and infer new insights about the circumstances that give quantum computers an advantage over classical ones. The bomb query complexity model is a variation on the query complexity model, inspired by the Elitzur-Vaidman bomb …
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Quantum computation with identical bosons
We investigate the computational complexity of quantum computing with identical noninteracting bosons, such as that in a linear optical system. We explore the challenges in building devices that implement this model and in certifying their correctness. In work done with Scott Aaronson, we introduce …
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Local Hamiltonians in quantum computation
… I investigate aspects of local Hamiltonians in quantum computing. First, I focus on the Adiabatic Quantum Computing model, based on evolution with a time- dependent Hamiltonian. I show that to succeed using AQC, the Hamiltonian involved must have local structure, which leads to a result about …
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Practical fault-tolerant quantum computation
… superposition, interference, and entanglement of quantum states to compute faster than a classical computer on select tasks. Manipulating quantum systems requires great care, however, as they are quite sensitive to many sources of noise. Surpassing the limits of hardware fabrication and control, …
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The Differential Scheme and Quantum Computation
<p>It is well-known that standard models of computation are representable as simple dynamical systems that evolve in discrete time, and that systems that evolve in continuous time are often representable by dynamical systems governed by ordinary differential equations. In many applications, e.g., …
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Quantum computation beyond the circuit model
The quantum circuit model is the most widely used model of quantum computation. It provides both a framework for formulating quantum algorithms and an architecture for the physical construction of quantum computers. However, several other models of quantum computation exist which provide useful …
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Optimising Qubit Designs for Topological Quantum Computation
… in order to perform logic gates for topological quantum computations, are governed by the exchange group of the constituent particles. We examine representations of these exchange groups and investigate what restrictions their structure places on the effciency, reliability and universality of …
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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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Logical and algebraic structures from Quantum Computation
… open problems regarding the axiomatisation of quantum computational logics. This thesis will be structured as follows: in Chapter 2 we will review some basics of universal algebra and functional analysis. In Chapters 3 through 6 the fundamentals of quantum gate theory will be produced. In …
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Coherent Control of Molecules for Quantum Computation
… the inuence of light can be used to perform quantum computational operations when their vibrational or rotational quantum states are coherently controlled. An analysis is presented of quantum computation within the vibrational degrees of freedom of a polyatomic molecule. A set of 2n …
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A parallel environment for simulating quantum computation
… and implementation of an environment to allow quantum computation to be simulated on classical computers. Although it is believed that quantum computers cannot in general be efficiently simulated classically, it is nevertheless possible to simulate small but interesting systems, on the order of …
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Horizons of Artificial Intelligence in Quantum Computation
The potential emergence of practical quantum computers has guided research into their potential applications, particularly in the context of artificial intelligence. Motivated by the success of deep neural networks in classical machine learning, a prevailing hope is that such success will translate …
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Mixed Species Ion Chains for Scalable Quantum Computation
… are investigated as a tool for building scalable quantum computation devices. Ytterbium ions provide a stable, environmentally-insensitive qubit that is easily initialized and manipulated, while barium ions are easily entangled with photons that can allow quantum information to be transmitted …
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Quantum Computation in Ultra-thin Topological Insulator Films
In the past several decades quantum computation has become a rapidly developing research area. The properties particular to quantum systems such as superposition of quantum states, wave function collapse, and quantum entanglement have shone a path to a type of ultra-high-speed and powerful …
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Applications of abelian algebraic structures in quantum computation
… 35, 49, 18], demonstrated a unique ability of quantum computers to solve problems defined on abelian groups. In this thesis, we study ways in which that ability can be leveraged in order to solve problems on more complex structures such as non-abelian groups and hypergroups. This leads to new …
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