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 17 of 17 for “"spin qubit"”.
-
Engineering Exchange Interaction in Coupled Spin-Qubit Quantum Dots
Made available in DSpace on 2015-09-25T20:09:36Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3337987.pdf: 1801101 bytes, checksum: 570011a5dce77a7cb4211a43262e750e (MD5) Previous issue date: 2008
-
Visible Emitters in Hexagonal Boron Nitride as an Optically Addressable Spin Qubit Platform
Optically active spins in solid-state systems serve as excellent spin-photon interfaces, a crucial building block for quantum technologies such as information networks and sensing. This thesis presents a new spin qubit platform: visible emitters embedded in epitaxially grown hexagonal boron nitride …
-
Developing the spin qubit of the tin-vacancy center in diamond for quantum networks
… requires developing a system with excellent spin and photonic properties [8]. To date, no system has demonstrated excellence in both of these regards simultaneously. At a high level, this thesis develops the spin properties of the tin-vacancy (SnV) center in diamond, a system for which the …
-
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 …
-
Quantum Computation in Ultra-thin Topological Insulator Films
… consisting of many entangled quantum bits (qubits) that have long decoherence times and effective schemes to initialise, control and measure the quantum bits. However, existing implementations of quantum computers have to compromise between different requirements, and we have not yet …
-
DEVICE DEVELOPMENT AND CHARACTERIZATION FOR SOLID-STATE QUANTUM COMPUTATION
… field, superconducting and semiconducting qubits have achieved tremendous progress. However, there still exist issues such as material instabilities, device vulnerabilities, fabrication complexities, measurement noise, etc., that hinder the performance improvement in the device level. In …
-
Deterministic spin and photon control with a symmetry protected colour centre
… technology. It requires a stationary, compute, qubit at a node in the network to interface with a flying, photonic, qubit for information distribution where these two qubits have different requirements to be technologically relevant. The stationary qubit needs long-lived internal degrees of …
-
Dispersive Readout and Spin-State Spectroscopy of Industrially-Fabricated Silicon Quantum Dots
… focuses on reliable and scalable readout of spin qubits in gate-defined silicon complementary metal-oxide-semiconductor quantum dots. In particular, this thesis studies the spin states and Pauli spin blockade (PSB) physics of silicon quantum dots using scalable gate-based dispersive sensing …
-
Fabrication and Device Applications of Self Assembled Nanostructures
The spin dynamics of electrons in inorganic and organic semiconducting nanostructures has become an area of interest in recent years. The controlled manipulation of an electron’s spin, and in particular its phase, is the primary requirement for applications in quantum information processing. The …
-
One- and two-qubit operations in Si-MOS quantum dots
… search, and quantum simulation. Quantum bits, or qubits, made from silicon quantum dots is one scalable approach that can be used to realize a quantum computer. Even though the essential ingredients for this platform have been demonstrated, certain physical phenomena that can influence quantum bit …
-
Group-IV Colour Centres in Diamond for Multi-Photon Entangled State Generation
… for their attractive optical properties, long spin coherence times and access to long lived nuclear memories. These properties put group-IV colour centres forward as an ideal platform to realise quantum communication and computing via the generation of highly entangled photonic states. In …
-
Optics-Based Quantum Information and Sensing Platforms Utilizing the Nitrogen-Vacancy Center in Diamond
… system with unique optical and spin properties. In particular, optical control and read-out of the spin state, combined with long spin coherence times, make it an attractive candidate for both high-sensitivity magnetometry and as a solid-state spin qubit for quantum information …
-
Decoherence and Dynamical Decoupling in Solid-State Spin Qubits
… is a study of the decoherence of a solid-state spin qubit, either that of a localized electron spin or a donor nucleus, caused by a nuclear spin bath relevant to semiconductor quantum computer architectures. In the presence of an external magnetic field and at low temperatures, the dominant …
-
Photon Sources for Linear Optical Quantum Computing
… act as the interface between light and a trapped spin qubit. These properties have resulted in proposals to generate multi-photon entangled states suitable for use in LOQC. This thesis presents some of the progress we have made towards the creation of a suitable photon source. After introducing …
-
The tin-vacancy centre in diamond: a coherent spin-photon interface for quantum network nodes
Quantum networks require spin-photon interfaces capable of generating entanglement between a stationary qubit and flying photons. So far, such an interface with a large emission rate of indistinguishable photons and excellent spin properties has been missing. Group IV colour centres in diamond …
-
Circles: Quantum Dots and Single Atoms
L'abstract è presente nell'allegato / the abstract is in the attachment