Hybrid Quantum System Based On Rare Earth Doped Crystals

Download or read book Hybrid quantum system based on rare earth doped crystals written by Probst, Sebastian and published by KIT Scientific Publishing. This book was released on 2016-09-05 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid quantum circuits interfacing rare earth spin ensembles with microwave resonators are a promising approach for application as coherent quantum memory and frequency converter. In this thesis, hybrid circuits based on Er and Nd ions doped into Y?SiO? and YAlO? crystals are investigated by optical and on-chip microwave spectroscopy. Coherent strong coupling between the microwave resonator and spin ensemble as well as a multimode memory for weak coherent microwave pulses are demonstrated.

Download or read book Hybrid Quantum Systems written by Yoshiro Hirayama and published by Springer Nature. This book was released on 2022-01-06 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art research on quantum hybridization, manipulation, and measurement in the context of hybrid quantum systems. It covers a broad range of experimental and theoretical topics relevant to quantum hybridization, manipulation, and measurement technologies, including a magnetic field sensor based on spin qubits in diamond NV centers, coherently coupled superconductor qubits, novel coherent couplings between electron and nuclear spin, photons and phonons, and coherent coupling of atoms and photons. Each topic is concisely described by an expert at the forefront of the field, helping readers quickly catch up on the latest advances in fundamental sciences and technologies of hybrid quantum systems, while also providing an essential overview.

Download or read book Adding nonlinearity to an electromagnetic-magnonic quantum hybrid device written by Pfirrmann, Marco and published by KIT Scientific Publishing. This book was released on 2020-10-05 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, hybrid systems based on yttrium-iron-garnet (YIG), three dimensional microwave cavity resonators, and superconducting transmon qubits, are investigated by continuous wave and pulsed microwave spectroscopy. Limitations to the magnetic linewidth in the quantum regime are identified and coherent exchange between a magnon and a superconducting qubit are demonstrated. Finally, a first step towards a strongly coupled hybrid system containing all three components is demonstrated.

Download or read book Molecular Motor Based on Single Chiral Tripodal Molecules Studied with STM written by Skolaut, Julian and published by KIT Scientific Publishing. This book was released on 2023-09-14 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a single molecular motor driven by the current in an STM. Its chiral functional group is supposed to perform a rotation in a preferred direction, proven by Binomial tests to be statistically significant. The rotation is proposedly driven by the chiral-induced spin selectivity effect (CISS). However, the studies of the rotation on the dependence on the lateral tip position, voltage and current indicate that he CISS is unlikely to cause the preferred rotation direction.

Download or read book Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors written by Jandke, Jasmin Maria and published by KIT Scientific Publishing. This book was released on 2019-05-02 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within this work, the pairing mechanism of conventional (Pb) and unconventional superconductors (SrFe2(As1-xPx )2 , FeSe, FeSe/STO) was investigated experimentally by means of elastic and inelastic tunneling spectroscopy at temperatures down to 30 mK. The distinction between elastic and inelastic contributions to tunneling data was elaborated. The results help to identify conventional (phonon-mediated) and unconventional (e.g. spin-?uctuation mediated) superconductivity.

Download or read book Quantum Sensing Experiments with Superconducting Qubits written by Schneider, Andre and published by KIT Scientific Publishing. This book was released on 2021-06-04 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum sensing is a vast and emerging field enabling in-situ studies of quantum systems and hence the development of quantum hybrid systems. This work creates the fundament of direct superconducting-magnetic hybrid systems by developing a local microwave sensing scheme and studying the influence of a static magnetic field on a superconducting qubit. Finally, a proof-of-principle hybrid system is demonstrated, which opens the path towards superconducting-magnetic quantum circuits.

Download or read book Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions written by Wildermuth, Matthias Micha and published by KIT Scientific Publishing. This book was released on 2023-09-11 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decades, superconducting devices have emerged as a promising platform for quantum technologies, including quantum sensing and quantum computing. Their key elements are Josephson junctions, which allow for coherent supercurrent tunneling between two weakly linked superconductors. If such a junction is extended in one direction to a long junction, the superconducting phase difference can vary in space and time and may allow for quantized phase windings that drive supercurrent vortices.