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Prosko, C.G. (author)Hybrid semiconducting-superconducting mesoscopic circuits are the basis of topological and parity quantum bits or 'qubits'. Both qubits are expected to be intrinsically protected from decoherence, making them promising candidates for fault-tolerant quantum computation. As topological phases effectively manifest exotic nonabelian particles which...doctoral thesis 2024
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Bouwmeester, D. (author)This dissertation centers around two topics: graphene nanoribbons (GNRs) and superconductors. The aim of this thesis is to work towards combine these two topics, in order to study how superconducting correlations interact with magnetic correlations within graphene nanoribbons, such as the magnetic edge states present in the zigzag edges of...doctoral thesis 2024
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Wesdorp, J.J. (author)The growing understanding of the physics of superconductor-semiconductor nanostruc- tures is a key driver for the development of emerging quantum technologies. The elemen- tary excitations of these hybrid nanostructures are Andreev bound states. To further our knowledge about their intricate physics, new tools must be used to study them. This...doctoral thesis 2024
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Splitthoff, L.J. (author)Superconducting circuits in cryogenic environments form an excellent material platform for the realization and study of quantum systems. <br/>In this thesis, we continue the exploration of novel types of circuit elements which expand the circuit quantum electrodynamics toolbox to enable exotic, and potentially better circuit implementations. To...doctoral thesis 2024
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Franse, W.J.M. (author)The field of quantum acoustics studies high frequency sounds generated at low temperatures such that quantum mechanical effects become relevant. The studies mainly revolves around propagating quantized sound waves, or phonons, a collective excitation of atoms in solids or liquids. In quantum acoustics, the engineering and design tools described...doctoral thesis 2024
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Vilkelis, K. (author)A large part of condensed matter physics concerns itself with understanding the behaviour of electrons in solids and finding ways to control them. However, in mesoscopic systems (i.e., systems with nanometer to micrometre scale), the behaviour of electrons is difficult to predict through the Schrödinger equation. Instead, it is often more...doctoral thesis 2024
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Varbanov, B.M. (author)The theory of quantum mechanics describes many phenomena that may initially seem to be counter-intuitive and, in some cases, impossible, given the understanding of classical mechanics that most of us are more intimately familiar with. Following its initial introduction, there was a great deal of debate among scientists regarding the predictions...doctoral thesis 2024
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Ciani, Alessandro (author), DiVincenzo, David P. (author), Terhal, B.M. (author)During the last 30 years, stimulated by the quest to build superconducting quantum processors, a theory of quantum electrical circuits has emerged, which is called circuit quantum electrodynamics or circuit-QED. The goal of the theory is to provide a quantum description of the most relevant degrees of freedom. The central objects to be derived...book 2024
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Mena, F.P. (author), Valenzuela, D. (author), Espinoza, C. (author), Pizarro, F. (author), Tan, B.-K. (author), Thoen, David (author), Baselmans, J.J.A. (author), Finger, R. (author)Achieving amplification with high gain and quantum-limited noise is a difficult problem to solve. Parametric amplification using a superconducting transmission line with high kinetic inductance is a promising technology not only to solve this problem but also adding several benefits. Compared with other technologies, they have the potential to...journal article 2024
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Rugers, Thomas (author)Magnetic Kinetic Inductance Detectors (MKIDs) are very good radiation detectors which are even capable of single photon detection in the near-infra red and higher frequency range. MKIDs are currently used to detect exoplanets and the goal is to also retrieve information of the atmosphere of exoplanets.<br/>However, MKIDs don’t have the photon...bachelor thesis 2023
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Sagastizabal, R.E. (author)Superconducting qubits have seen a tremendous progress in the last two decades, and yet they remain unable to extract quantum advantage for application scenarios. While algorithms like Shor’s demonstrate quantum advantage in theory, they do not seem to fit modern noisy quantum processors. Then, in order to achieve quantum advantage either modern...doctoral thesis 2023
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- Saglam, Y.G. (author) doctoral thesis 2023
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van Loo, N. (author)The development of quantum computers is perhaps one of the most exciting innovations of our time. The most investigated quantum computers, however, suffer from the fact that quantum information is lost due to interaction between the quantum bits and their environment. As a radically different approach, it has been proposed that one can instead...doctoral thesis 2023
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Roos, Matthijs (author)To better understand the formation of stars in dusty star-forming galaxies (DSFGs), and the evolution of this type of submillimeter galaxies (SMGs), it is of high significance to perform submillimeter/far-infrared surveys. The Deep Spectroscopic High-redshift Mapper 2.0 (DESHIMA2.0) on the ASTE telescope in Chile has been designed to observe the...bachelor thesis 2023
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Möhle, C.M. (author)Majorana zero modes (MZMs) are a topic of intense research as they constitute the main building block of topological qubits - a qubit type with potentially enhanced coherence time. A promising way to create these quantum states is to couple a one-dimensional (1D) semiconducting segment with spin-orbit interaction to a superconductor, in the...doctoral thesis 2023
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Vaccaro, D. (author), Akamatsu, H. (author), Gottardi, L. (author), Bruijn, M. P. (author), van der Linden, A. J. (author), van Leeuwen, B. J. (author), van der Hulst, P. (author), de Vries, C. P. (author), Gao, J.R. (author)We report our most recent progress and demonstration of a frequency domain multiplexing (FDM) readout technology for transition-edge sensor (TES) arrays, both of which we have been developing in the framework of the X-IFU instrument on board the future Athena X-ray telescope. Using Ti/Au TES micro-calorimeters, high-Q LC filters and analog...journal article 2023
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Bouwmeester, D. (author), Ghiasi, T.S. (author), Borin Barin, Gabriela (author), Müllen, Klaus (author), Ruffieux, Pascal (author), Fasel, Roman (author), van der Zant, H.S.J. (author)Atomically precise graphene nanoribbons (GNRs) are predicted to exhibit exceptional edge-related properties, such as localized edge states, spin polarization, and half-metallicity. However, the absence of low-resistance nanoscale electrical contacts to the GNRs hinders harnessing their properties in field-effect transistors. In this paper, we...journal article 2023
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Chang, J. (author), Gao, Jun (author), Esmaeil Zadeh, I.Z. (author), Elshaari, Ali W. (author), Zwiller, Val (author)At the core of quantum photonic information processing and sensing, two major building pillars are single-photon emitters and single-photon detectors. In this review, we systematically summarize the working theory, material platform, fabrication process, and game-changing applications enabled by state-of-the-art quantum dots in nanowire...review 2023
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Luschmann, Thomas (author), Jung, Alexander (author), Geprägs, Stephan (author), Haslbeck, Franz X. (author), Marx, Achim (author), Filipp, Stefan (author), Groeblacher, S. (author), Gross, Rudolf (author), Huebl, Hans (author)Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films have become commercially available. Here, we present a systematic low-temperature study of the performance of SAW devices fabricated on LNO-on...journal article 2023
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Anders, Jens (author), Babaie, M. (author), Bashir, Imran (author), Charbon, Edoardo (author), Geck, Lotte (author), Ibrahim, Mohamed I. (author), Sebastiano, F. (author), Staszewski, R.B. (author), Vladimirescu, A. (author)Over the past decade, significant progress in quantum technologies has been made, and hence, engineering of these systems has become an important research area. Many researchers have become interested in studying ways in which classical integrated circuits can be used to complement quantum mechanical systems, enabling more compact, performant...journal article 2023