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 16 of 16 for “"Spin control"”.
-
Environmental coupling in a quantum dot as a resource for quantum optics and spin control
A single spin confined to a semiconductor quantum dot is a system of significant interest for quantum information science, as a potential optically-addressable qubit. In many respects, a quantum dot behaves like a single atom with high quality single photon emission. By controlling the light-matter …
-
Coherent Interaction Between Laser Photons and Single Spins in InAs Quantum Dots
… interactions between laser photons and single spins in two types of InAs quantum dots. Quantum dots are promising candidates for quantum information applications due the potential for on-demand emission of highly pure and indistinguishable photons. Achieving coherent interactions between …
-
Photonic integration of electron-nuclear spin systems in semiconductor quantum dots
… interface of an electron and the nuclear spins within an optically active QD. Here we integrate the electron-nuclear spin system of a semiconductor QD into an open microcavity. We report progress on three fronts towards the generation of multidimensional photonic cluster states: First, we …
-
Extraplanetary Exploration Using Electric Solar Wind Sail
… investigates the problems in the dynamics and control of extraplanetary exploration using an electric solar wind sail (E-sail). The E-sail is a novel propellantless propulsion technology that harvests energy by repelling the charged particles in solar wind. It consists of a spinning central …
-
Imaging and controlling atoms and semiconductor spins with advanced optical microscopy
… counterparts. Atoms and atom-like semiconductor spins are outstanding quantum objects in which such quantum technologies are implemented. In developing quantum systems, optical microscopy is central to controlling these quantum objects with their distinct atom-photon interactions, which enable …
-
Coherent control of nitrogen-vacancy centers in diamond nanostructures for quantum sensing and networking
The exceptional optical and spin properties of the negatively charged nitrogen-vacancy (NV-) center in diamond have led to numerous applications ranging from super-resolution imaging to the exploration of previously untested new phenomena using quantum entanglement for information processing and …
-
Coherent Dynamic Nuclear Polarization: Mechanistic Insights and Experimental Advances
… bursts—has shown the advantages of coherent spin control. We present both theoretical and experimental investigations aimed at understanding and optimizing polarization transfer. On the theoretical side, we examined multiple DNP mechanisms, including a re-evaluation of the Overhauser effect …
-
Analysis of non-governmental organisations (NGOs) in community rural development : a study of world vision international (WVI) development interventions in Gwembe district of Zambia
… returns; they are engulfed in self-obfuscation, spin control and outright lying to justify their works. The NGOs are elite driven and do not care about the poor.
-
Dynamic and geometric control of electronic spins in diamond for quantum sensing and quantum information science
… (NV) color center in diamond, electronic spin defects embedded in a solid-state system, has emerged as a promising platform for quantum sensing and quantum information science in ambient temperature. Its capability of robust but high-precision spin control allows the NV center to be not …
-
Solid-state spin-integrated circuits for quantum sensing and control
Spin systems are an increasingly important quantum-sensing platform. In particular, atomic defect centers in diamond called nitrogen-vacancy (NV) centers offer impressive room temperature imaging capabilities for both magnetic fields and temperature. NV-based sensing platforms have found utility in …
-
Taming Quantum Noise in the Open: Spin Biophysics under Optimal Control
The quantum control of spin-correlated radical pairs (SCRPs) holds promise for the targeted manipulation of magnetic field effects (MFEs), with potential applications ranging from the design of noise-resilient quantum information processors to genetically encodable quantum sensors. However, …
-
High-fidelity microwave control of single-atom spin qubits in silicon
… demonstration of the full operation of single-spin qubits in Si. Our qubits consist of the electron and nuclear spins of a single phosphorus atom, implanted in a Si substrate, and controlled by a gated nanostructure. We describe an experimental setup tailored to minimise electron temperature …
-
A tale of two interfaces: photons and spins linked by a solid-state artificial atom
An electron spin confined to a self-assembled quantum dot presents itself as a natural candidate for the node of a quantum network, offering a highly coherent interface between a solid-state spin and an optical photon. Crucial to the construction of such a network will be the exploitation of the …
-
Diamond nanophotonic devices for quantum information processing and sensing
… NVs and photons, difficulty of maintaining spin coherence times, and scalable techniques for fabrication of NV-photon networks. This thesis focuses on overcoming these challenges by fabricating diamond devices to improve the collection efficiency of NV photon emission, especially from the …
-
Spin dynamics of bulk and quasi-two-dimensional metal halide based perovskite semiconductors
… metal halide perovskites. Specifically, of their spin dependencies on lattice and many-body interactions. Many of these results were obtained in close collaboration with others, as specified throughout the dissertation. First, we report that spin-dependent exciton interactions modify the exciton …
-
Quantum control of optically active defects in the solid state
… source [1]. In the same study, the electronic spin of the same defect was optically initialized and read out. Remarkably, both of these achievements occurred under ambient conditions. In the decades that have followed, the study of optically active defects in the solid state have garnered …