Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"Quantum entanglement"”.
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Local approach to quantum entanglement
Quantum entanglement is the key property that makes quantum information theory different from its classical counterpart and is also a valuable physical resource with massive potential for technological applications. However, our understanding of entanglement is still far from complete despite …
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Topological materials and quantum entanglement
… of matter and applications of the concept of entanglement in understanding topological phases and their transitions. The first part will focus on a particular class of materials called topological crystalline insulators (TCI), which are bulk insulators with metallic boundary states protected …
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Games, protocols, and quantum entanglement
Quantum entanglement has evolved from being "spooky action at a distance" to being a fundamental information-theoretic resource, extending the frontiers of what is possible in communications, computation, and cryptography. It gives rise to non-local correlations that can be harnessed to perform …
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Quantum entanglement transformations via local operations and classical communication
… thesis are two-fold: i) calculating the optimal entanglement transformation rate between two multipartite pure states via stochastic local operations and classical communication (SLOCC), and ii) showing the properties of a common resource for a set of multi-partite pure state via local operations …
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Aspects of quantum entanglement in critical and topologically ordered systems
Quantum entanglement plays an important role in characterizing the property of many-body systems and quantum field theories. In this thesis, we study the quantum entanglement in (1+1)-dimensional critical systems and (2+1)-dimensional topologically ordered phases. For (1+1)-d critical systems, we …
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Relational Interreligious Dialogue: Interdisciplinary Arguments from Creator/Creature Theology and Quantum Entanglement
… dialogue, this project evaluates the models of quantum entanglement and Christianity’s Creator/creation relationship. Placing interdisciplinary perspectives from science and religion in dialogue essentially instantiates the project’s methodology, it validates relational ontology as an effective …
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Conformal Field Theory Descriptions of String Initial Conditions and Quantum Entanglement Entropy
Quantum theories are filled with predictions which defy any classical analog. Perhaps the phenomenon which is most bizarre from a classical perspective is entanglement. This effect is the driving force behind the growing interest in quantum information. From entanglement, one is naturally led to …
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Quantum Entanglement: Geometric Quantification and Applications to Multi-Partite States and Quantum Phase Transitions
The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement is explored for bi-partite and multi-partite pure and mixed states. It is determined analytically for arbitrary two-qubit …
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Quantum Entanglement: Geometric Quantification and Applications to Multi-partite States and Quantum Phase Transitions
The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement is explored for bi-partite and multi-partite pure and mixed states. It is determined analytically for arbitrary two-qubit …
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Entanglement detection with minimal tomography using witness bases measurement
… the experiment performed on detection of quantum entanglement with minimal tomography, using witness-family measurements. This is achieved by measuring bases of witness operators, which collectively provide complete information for state reconstruction.
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Information-theoretic aspects of quantum channels
Quantum information theory is an important element of quantum computing and quantum communication systems. Whenever a quantum computer needs to send an output state to another party, or two parties need to establish quantum entanglement or secure keys via quantum communication, a quantum channel is …
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Quantum blackjack : quantum strategies and advantages in games with limited classical communication
In this thesis, we examine the advantages that quantum strategies afford in communication-limited games. Inspired by the card game blackjack, we particularly focus on cooperative, two-party sequential games in which a single classical bit of communication is allowed from the first-mover to the …
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In search of photonic bound entanglement: using hyperentanglement to study mixed entangled states
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 …
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Bridging the Geometric and Quantum Information of Structured Light
… for preparing and measuring the geometric and quantum information of structured light. The geometric phase acts as a memory of transformations undertaken by physical processes; quantum entanglement underpins quantum information science which explores the theoretical and technological …
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Numerical methods of characterizing symmetry protected topological states in one dimension
… generalization of the Kitaev p-wave wire. The quantum entanglement diagnostics we performed allow us to determine phase boundaries, and the nature of the phase transitions. An intervening incommensurate phase is found between the topological and trivial phases. We locate and characterize a …
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Polarization Sensitive Imaging Techniques Using Quantum Entangled Qubits
… research is to study imaging techniques using quantum entangled qubits. These techniques extract information about the quantum state of two entangled qubits and corelate the degree of entanglement to each pixel. Imaging information of the underlying structure or material is decoded using the …
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Exploring Novel Quantum Physics Using Ytterbium-171 in An Optical Cavity
… thesis, I present the development of a cavity quantum electrodynamics (CQED) system using single or multiple ensembles of ytterbium-171 atoms and its use for quantum metrology and quantum information science investigations. We develop and study a unified theoretical framework that describes …
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Studies of Topology and Order in Frustrated Spin Systems
… between topology and order in frustrated quantum spin systems. We identify the relevant effects in the study of novel phases of matter, as they emerge in tractable quantum spin models, and we make several original contributions. In this dissertation, (a) we study quantum dimer models with …
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The structure of many-body entanglement
… we discuss the general spatial structure of quantum entanglement in local many-body systems. A central theme is the organizing power of the renormalization group for thinking about many-body entanglement. We argue that the coarse structure of entanglement across of wide variety of systems, …
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Extending and characterizing quantum magic games
… two-player nonlocal game in which shared quantum entanglement allows the players to win with certainty, while players limited to classical operations cannot do so, a phenomenon dubbed "quantum pseudo-telepathy". The game has a referee separately ask each player to color a subset of a 3x3 …
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