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.
Results
Showing 1 to 20 of 26 for “"teleportation"”.
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Single-photon frequency upconversion for long-distance quantum teleportation and communication
Entanglement generation, single-photon detection, and frequency translation that preserves the polarization quantum state of the photons are essential technologies for long distance quantum communication protocols. This thesis investigates the application of polarization entanglement to quantum …
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Quantum error modelling and correction in long distance teleportation using singlet states
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Benchmarking measurement-based quantum computation on graph states
… error-prone interactions through quantum wire teleportation experiments. By leveraging underlying symmetry, we will design graph states as measurement-based quantum error correction codes to protect against perturbations, such as ZZ crosstalk in quantum wire teleportation. Additionally, we will …
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Navigating Virtual Environments At Scale
… navigation techniques like Walking-in-place, teleportation, joystick etc. should be used in-conjunction with real walking input or just by themselves. We present studies on two alternative navigation techniques (Legomotion & Dash ) that enable immersive, efficient and scaleable virtual …
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Quantum information, Bell inequalities and the no-signalling principle
… on the success probability of a class of quantum teleportation protocols, denoted as port-based teleportation, from the no-cloning theorem and the no-signalling principle. Chapter 4 introduces the principle of quantum information causality. Chapter 2 considers the predictions of quantum theory and …
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Numerical methods of characterizing symmetry protected topological states in one dimension
… We study the quantum entanglement, teleportation and fractional Josephson effects of this system. The ground state of the topological phase is a condensation of four electrons instead of cooper-pairs. While there is a nonzero teleportation for cooper-pairs, the teleportation of one …
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Multiple-user quantum optical communication
… that realizes long-distance, high-fidelity qubit teleportation is reviewed. Previous work on this communication architecture is extended in two primary ways. First, models are developed for assessing the effects of amplitude, phase, and frequency errors in the entanglement source of …
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A Quantum Light Source for Quantum Information Applications in the Telecom C-Band
… input qubits were used and high-fidelity quantum teleportation was observed. In an effort to demonstrate a more technologically relevant application, the quantum relay was subsequently operated at 1 GHz in order to demonstrate the teleportation of initially time-bin encoded laser input qubits. A …
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Numerical Synthesis of Arbitrary Multi-Qubit Unitaries with low 𝑇-Count
… gates require magic state distillation and gate teleportation, which are resource intensive. Here, We propose an approach to adapt numerical optimization to error corrected quantum circuits by using sequen- tial two-pass multistart numerical optimizaton to reduce the number of 𝑅z gates that must …
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Polarization entanglement storage in ensemble-based atomic memories
… communication of quantum states through teleportation, but require, in advance, the robust distribution of entanglement between relevant parties. Engineering these networks requires quantum interconnects, which convert quantum states in one physical system to those of another reversibly, …
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Telecom Wavelength Quantum Devices
… from a laser, an important mechanism for quantum teleportation. Interference visibilities as high as 60 ± 6 % were recorded, surpassing the 50 % threshold imposed by classical electrodynamics. Later, polarisation-entanglement of a similar QD was observed, with pairs of telecom-wavelength photons …
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Video based reconstruction system for mixed reality environments supporting contextualised non-verbal communication and its study
… in multiple locations enabling the apparent teleportation of people and objects. Additionally, the system allows for the recording of live sessions and their playback in natural time with free-viewpoint.It utilises components of a video based reconstruction and a distributed video …
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Towards optical quantum communication in space
… protocols of interest, including superdense teleportation and high-dimensional entanglement-based quantum key distribution (QKD). To this same end, we also have developed another system to execute entanglement swapping, a protocol required for a fully functional quantum network, while in …
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Building efficient light-matter interfaces for quantum systems
… of heralded quantum entanglement and teleportation between two separated NV centers. To improve the entanglement probability in such schemes, it is imperative to improve the efficiency with which single photons from a NV center can be guided into a low-loss single-mode waveguide. As …
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Efficient quantum optical state engineering and applications
… entanglement, cryptography, superdense coding, teleportation, and simple quantum computing demonstrations. All of these processes would benefit from better engineering of the underlying down-conversion process, but despite significant effort (both theoretical and experimental), optimization of …
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Design Methods for Reliable Quantum Circuits
… are the building blocks of quantum information teleportation protocols, which in turn are used in state-of-the-art fault-tolerant quantum computing architectures. Information teleportation implies that the state of a subsystem is moved to a second subsystem without copying any information during …
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Aaru's Awakening special effects
… The third was lighting for the main character’s teleportation projectile. Aaru is the game’s main character, and one of his special abilities is firing a burning projectile that he can then later teleport to where ever it lands. The theory that was cooked up will be explained to some extent in …
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High fidelity quantum gates with ions in cryogenic microfabricated ion traps
… computer, including one and two qubit gates, teleportation and error correction, were demonstrated using trapped atomic ions. Scaling to a larger number of qubits requires miniaturization of the ion traps, currently limited by the sharply increasing motional state decoherence at sub-100 [mu]m …
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Entanglement and quantum gate processes in the one-dimensional quantum harmonic oscillator
… a diverse range of fields such as cryptography, teleportation and computing. However, current methods for generating the required entangled states are not necessarily robust against perturbations in the proposed systems. In this thesis, techniques will be developed for robustly generating the …
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Quantum applications of Raman-mediated photon-pair generation
… as quantum communication, quantum cryptography, teleportation, and linear optics quantum computing. Raman scattering is one of the most fundamental light-matter interactions and can be used to generate photon pairs. Using the spontaneous Stokes Raman interaction, a photon from a strong pump laser …
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