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.
Results
Showing 1 to 20 of 95 for “"Quantum computer"”.
-
Toward a personal quantum computer
… Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
Towards a table top quantum computer
In the early 1990s, quantum computing proved to be an enticing theoretical possibility but a extremely difficult experimental challenge. Two advances have made experimental quantum computing demonstrable: Quantum error correction; and bulk, thermal quantum computing using nuclear magnetic resonance …
-
Approximating a wavelet kernel using a quantum computer
Machine learning and quantum computing are both fields which have gained a significant amount of popularity and attention in recent years. The intersection of these two fields, quantum machine learning, looks at whether quantum computers can aid or improve classical machine learning methods, or …
-
The complexity of sampling from a weak quantum computer
Quantum computers have the promise of revolutionizing information technology, artificial intelligence, cryptography, and industries such as drug design. Up until this point our main understanding of quantum computing has been bound to theoretical speculations which has successfully lead to the …
-
Synthesis and evaluation of fault-tolerant quantum computer architectures
… is the cornerstone of practical, large-scale quantum computing, pushed into its prominent position with heroic theoretical efforts. The fault-tolerance threshold, which is the component failure probability below which arbitrarily reliable quantum computation becomes possible, is one standard …
-
Distributed Simulation Methods and Algorithms for Superconducting Quantum Computer Reliability
Superconducting quantum computers are yet to reach the fault-tolerant regime, and thus the tantalising promises behind quantum algorithms are laid barren. To cross this knowledge-concealing wasteland, one must first understand how both intrinsic and extrinsic noise hinders the reliability of …
-
An optical-fiber interface to a trapped-ion quantum computer
The trapped-ion quantum computer is an atom-based implementation of a quantum computer that has successfully demonstrated numerous quantum algorithms and the potential for scalability. Fundamental to its operation is the short-range Coulombic interaction among its atomic ion registers, which has …
-
Time-evolution of SU(2) lattice gauge theory on a quantum computer
… tool used to study the forces of nature, like Quantum Electrodynamics and Quantum Chromodynamics. Quantum computers offer an alternative to classical computers in studying these forces. In my thesis, a gate-based quantum computer was used to perform calculations of the propagation of an …
-
Fault-tolerant quantum computer architectures using hierarchies of quantum error-correcting codes
Quantum computers have been shown to efficiently solve a class of problems for which no efficient solution is otherwise known. Physical systems can implement quantum computation, but devising realistic schemes is an extremely challenging problem largely due to the effect of noise. A quantum …
-
Algorithmic Quantum-State Generation for Simulating Quantum Field Theories on a Quantum Computer
Simulating a quantum field theory (QFT) on a quantum computer comprises three steps: generating an initial state, simulating time evolution and measuring observables, with the initial-state generation being the most expensive step for the entire simulation. In this thesis, we introduce a general …
-
Foundational Abstractions for Quantum Programming
Bringing the promise of quantum computation into reality requires not only building a quantum computer but also correctly programming it to run a quantum algorithm. To obtain asymptotic advantage over classical algorithms for applications including simulation, search, and optimization, quantum …
-
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 …
-
Zen and the Art of Praxis: New Adventures in Live Coding, Quantum Computing, and The Web.
In recent years, quantum computing has emerged from the realm of science fiction, becoming a real-world discipline with practical applications. Although NISQ-era hardware imposes significant limitations, and the case for quantum advantage over classical algorithms remains largely theoretical, its …
-
The power of restricted quantum computational models
Restricted models of quantum computation are ones that have less power than a universal quantum computer. We studied the consequences of removing particular properties from a universal quantum computer to discover whether those resources were important.In the first part of the thesis we studied …
-
Quantum Computation With Electron Spins of Phosphorous Donors in Silicon
The discovery of efficient quantum algorithms a decade ago has shown that a quantum computer encoding and processing information quantum mechanically, can solve important problems intractable with conventional computers. The invention of quantum error correction principle, makes quantum computation …
-
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 …
-
Decoherence and Dynamical Decoupling in Solid-State Spin Qubits
… by a nuclear spin bath relevant to semiconductor quantum computer architectures. In the presence of an external magnetic field and at low temperatures, the dominant decoherence mechanism is the spectral diffusion of the qubit spin resonance frequency due to the temporally fluctuating random …
-
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 …
-
Disorder-driven phase transitions in weak, boundary-obstructed, and non-Hermitian topological insulators
"This thesis focuses on three main areas in quantum physics. The bulk of this thesis addresses the effects of disorder on novel classes of topological insulators. Topological insulators are states of matter that display properties (most notably, protected anomalous edge states) that are robust to …
-
Using the qubus for quantum computing
In this thesis I explore using the qubus for quantum computing. The qubus is an architecture of quantum computing, where a continuous variable ancilla is used to generate operations between matter qubits. I concentrate on using the qubus for two purposes - quantum simulation, and generating cluster …
Page 1 of 5