Physics – Quantum Physics
Scientific paper
2005-12-22
Physics
Quantum Physics
PhD Thesis; Figures compressed; If needed, contact the author for a version in spanish. (Full abstract is in the thesis file)
Scientific paper
Recently developed quantum algorithms suggest that quantum computers can solve certain problems and perform certain tasks more efficiently than conventional computers. Among other reasons, this is due to the possibility of creating non-classical correlations, or quantum entanglement, which is a phenomena hard or impossible to reproduce by classical-information methods. In this thesis I first investigate the simulation of quantum systems on a quantum computer constructed of two-level quantum elements or qubits. For this purpose, I present algebra mappings that allow one to obtain physical properties and compute correlation functions of fermionic, anyonic, and bosonic systems with such a computer. The results obtained show that the complexity of preparing a quantum state which contains the desired information for the computation is crucial. Second, I present a wide class of quantum computations, which could involve entangled states, that can be simulated with the same efficiency on both types of computers. The notion of generalized quantum entanglement then naturally emerges. This generalization of entanglement is based on the idea that entanglement is an observer-dependent concept, that is, relative to a set of preferred observables.
No associations
LandOfFree
Quantum Computation, Complexity, and Many-Body Physics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum Computation, Complexity, and Many-Body Physics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Computation, Complexity, and Many-Body Physics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-697196