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Franco N.C. Wong and Vladan Vuletic. Kim, Taehyun Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Department of Physics 2009-04-29T17:44:03Z 2009-04-29T17:44:03Z 2008 2008 http://hdl.handle.net/1721.1/45447 318120297 Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. Includes bibliographical references (p. 143-153). In this thesis, I describe demonstration of various quantum information processing tasks using single-photon two-qubit (SPTQ) quantum logic. As an initial state of those tasks, I used various entangled photon pairs, and I describe development of a polarization entangled photon pair source based on a collinear spontaneous parametric down conversion (SPDC) process within a bidirectionally pumped periodically-poled potassium titanyl phosphate (PPKTP) crystal embedded in a polarization Sagnac interferometer and generation of hyper-entangled photon pairs that are simultaneously entangled in the polarization and momentum degrees of freedom. I also introduce deterministic quantum gates based on SPTQ quantum logic where the polarization and momentum degrees of freedom in a single photon are used as two qubits. By applying SPTQ quantum logic to different entangled states, I demonstrate several quantum information tasks such as transferring entanglement from the momentum qubits to the polarization qubits, SPTQ-based complete polarization Bell state measurements, entanglement distillation (Schmidt projection), and a physical simulation of the entangling-probe attack on the Bennett Brassard 1984 (BB84) quantum key distribution (QKD). by Taehyun Kim. Ph.D. 153 p. eng Massachusetts Institute of Technology 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 Physics. Applications of single-photon two-qubit quantum logic to the quantum information science Applications of SPTQ quantum logic to the quantum information science Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="1817ac76-4685-4743-9aa7-cd32131d2962"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Applications of single-photon two-qubit quantum logic to the quantum information science</Title> <Subtitle>Applications of SPTQ quantum logic to the quantum information science</Subtitle> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2008</PublicationDate> <Authors> <Author> <DisplayName>Kim, Taehyun</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Physics.</Keyword> <Abstract>In this thesis, I describe demonstration of various quantum information processing tasks using single-photon two-qubit (SPTQ) quantum logic. As an initial state of those tasks, I used various entangled photon pairs, and I describe development of a polarization entangled photon pair source based on a collinear spontaneous parametric down conversion (SPDC) process within a bidirectionally pumped periodically-poled potassium titanyl phosphate (PPKTP) crystal embedded in a polarization Sagnac interferometer and generation of hyper-entangled photon pairs that are simultaneously entangled in the polarization and momentum degrees of freedom. I also introduce deterministic quantum gates based on SPTQ quantum logic where the polarization and momentum degrees of freedom in a single photon are used as two qubits. By applying SPTQ quantum logic to different entangled states, I demonstrate several quantum information tasks such as transferring entanglement from the momentum qubits to the polarization qubits, SPTQ-based complete polarization Bell state measurements, entanglement distillation (Schmidt projection), and a physical simulation of the entangling-probe attack on the Bennett Brassard 1984 (BB84) quantum key distribution (QKD).</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>