Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2008.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2009
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| Online Access: | http://hdl.handle.net/1721.1/44789 |
| _version_ | 1826202176398032896 |
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| author | Yang, Jamie Chiaming |
| author2 | David G. Cory. |
| author_facet | David G. Cory. Yang, Jamie Chiaming |
| author_sort | Yang, Jamie Chiaming |
| collection | MIT |
| description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2008. |
| first_indexed | 2024-09-23T12:03:23Z |
| format | Thesis |
| id | mit-1721.1/44789 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T12:03:23Z |
| publishDate | 2009 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/447892019-04-11T02:47:10Z Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing Yang, Jamie Chiaming David G. Cory. Massachusetts Institute of Technology. Dept. of Nuclear Science and Engineering. Massachusetts Institute of Technology. Dept. of Nuclear Science and Engineering. Nuclear Science and Engineering. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2008. Includes bibliographical references (p. 81-87). Coupled electron-nuclear spins are promising physical systems for quantum information processing: By combining the long coherence times of the nuclear spins with the ability to initialize, control, and measure the electron spin state, the favorable properties of each spin species are utilized. This thesis discusses a procedure to initialize these nuclear spin qubits, and presents a vision of how these systems could be used as the fundamental processing unit of a quantum computer. The focus of this thesis is on control of a system in which a single electron spin is coupled to N nuclear spins via resolvable anisotropic hyperfine (AHF) interactions. High-fidelity universal control of this le-Nn system is possible using only excitations on a single electron spin transition. This electron spin actuator control is implemented by using optimal control theory to find the modulation sequences that generate the desired unitary operations. Decoherence and the challenge of making useful qubits from these systems are also discussed. Experimental evidence of control using an electron spin actuator was acquired with a custom-built pulsed electron spin resonance spectrometer. Complex modulation sequences found by the GRadient Ascent Pulse Engineering (GRAPE) algorithm were used to perform electron spin echo envelope modulation (ESEEM) experiments and simple preparation-quantum operation-readout experiments on an ensemble of 1e-1n systems. The data provided evidence that we can generate any unitary operation on an AHF-coupled 1e-1n system while sitting on a single transmitter frequency. The data also guided design of the next iteration of these experiments, which will include an improved spectrometer, bandwidth-constrained GRAPE, and samples with larger Hilbert spaces. by Jamie Chiaming Yang. Ph.D. 2009-03-16T19:43:10Z 2009-03-16T19:43:10Z 2008 2008 Thesis http://hdl.handle.net/1721.1/44789 300301199 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 87 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Nuclear Science and Engineering. Yang, Jamie Chiaming Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title | Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title_full | Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title_fullStr | Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title_full_unstemmed | Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title_short | Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing |
| title_sort | coherent control of hyperfine coupled electron and nuclear spins for quantum information processing |
| topic | Nuclear Science and Engineering. |
| url | http://hdl.handle.net/1721.1/44789 |
| work_keys_str_mv | AT yangjamiechiaming coherentcontrolofhyperfinecoupledelectronandnuclearspinsforquantuminformationprocessing |