Alexandria Digital Research Library

Superconducting qubits : dephasing and quantum chemistry

Author:
O'Malley, Peter James Joyce
Degree Grantor:
University of California, Santa Barbara. Physics
Degree Supervisor:
John Martinis
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2016
Issued Date:
2016
Topics:
Chemistry and Quantum physics
Keywords:
Quantum Noise
Quantum Algorithms
Quantum Computation
Quantum Chemistry
Quantum Information
Genres:
Dissertations, Academic and Online resources
Dissertation:
Ph.D.--University of California, Santa Barbara, 2016
Description:

One of the most exciting potential applications of a quantum computer is the ability to efficiently simulate quantum systems, a task that is out of the reach of even the largest classical supercomputers. Such simulations require a quantum algorithm capable of efficiently representing and manipulating a quantum system, as well as a device with sufficient coherence to execute it. In this work, we describe experiments advancing both of these goals. First, we discuss dephasing---currently a leading cause of decoherence in superconducting qubits---and present measurements accurately quantifying both low- and high-frequency phase noise sources. We then discuss two quantum algorithms for the simulation of chemical Hamiltonians, and experimentally contrast their performance. These results show that with continuing improvement in quantum devices we may soon be able to apply quantum computers to practical chemistry problems.

Physical Description:
1 online resource (126 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f34j0f6m
ISBN:
9781369147292
Catalog System Number:
990046968900203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Peter O'Malley
File Description
Access: Public access
OMalley_ucsb_0035D_13079.pdf pdf (Portable Document Format)