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Title:In search of photonic bound entanglement: using hyperentanglement to study mixed entangled states
Author(s):Sharma, Aditya Nilakantan
Director of Research:Kwiat, Paul G
Doctoral Committee Chair(s):Stack, John D
Doctoral Committee Member(s):Lorenz, Virginia; Weaver, Richard L
Department / Program:Physics
Discipline:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Entanglement
Hyperentanglement
Bound entanglement
Smolin state
Spontaneous parametric downconversion
Abstract:Quantum entanglement exhibits various interesting features that emerge only in high-dimensional systems. One of the most fascinating is bound entanglement, entanglement that cannot be extracted using local operations and classical communication. This thesis describes our work towards an experimental realization of the four-qubit bound-entangled Smolin state, using the polarization and spatial mode of photon pairs. We describe a number of interesting experimental challenges that this work faced. We present our results on entangled two-qubit spatial mode states and hyperentangled four-qubit polarization-spatial-mode states generated by spontaneous parametric down-conversion from a second-order TEM mode pump. Some of the subtleties involved in preparing genuine mixed states in the lab are discussed.
Issue Date:2016-07-13
Type:Thesis
URI:http://hdl.handle.net/2142/92823
Rights Information:Copyright 2016 by Aditya Nilakantan Sharma. All rights reserved.
Date Available in IDEALS:2016-11-10
Date Deposited:2016-08


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