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Onkenhout, Job (author)In 2019 a quantum computer performed a highly complex operation in 4 minutes, which would have taken the most powerful supercomputers of today around 10,000 years. Performing calculations unimaginably faster than is currently possible may bring great opportunities, but may implicate a threat to digital communications. Digital communication is...master thesis 2023
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Dreef, Matti (author)Quantum computing is a promising means of satisfying the ever-increasing need for more and faster computations. While some specific applications can already benefit from quantum computing today, a large-scale general-purpose quantum computer is yet to be developed. Many different technologies are being explored to reach this goal, color centers...master thesis 2023
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Driebergen, Tim (author)The minimum vertex cover problem (MinVertexCover) is an important optimization problem in graph theory, with applications in numerous fields outside of mathematics. As MinVertexCover is an NP-hard problem, there currently exists no efficient algorithm to find an optimal solution on arbitrary graphs. We consider quantum optimization algorithms,...master thesis 2023
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Corley-Wiciak, Cedric (author), Richter, Carsten (author), Zoellner, Marvin H. (author), Zaitsev, Ignatii (author), Manganelli, Costanza L. (author), Hendrickx, N.W. (author), Sammak, A. (author), Veldhorst, M. (author), Scappucci, G. (author)A strained Ge quantum well, grown on a SiGe/Si virtual substrate and hosting two electrostatically defined hole spin qubits, is nondestructively investigated by synchrotron-based scanning X-ray diffraction microscopy to determine all its Bravais lattice parameters. This allows rendering the three-dimensional spatial dependence of the six...journal article 2023
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Xue, X. (author), 't Hart, P.A. (author), Charbon-Iwasaki-Charbon, E. (author), Sebastiano, F. (author), Vladimirescu, A. (author)As big strides were being made in many science fields in the 1970s and 80s, faster computation for solving problems in molecular biology, semiconductor technology, aeronautics, particle physics, etc., was at the forefront of research. Parallel and super-computers were introduced, which enabled problems of a higher level of complexity to be...journal article 2023
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Seskir, Zeki C. (author), Umbrello, S. (author), Coenen, Christopher (author), Vermaas, P.E. (author)As quantum technologies (QT) advance, their potential impact on and relation with society has been developing into an important issue for exploration. In this paper, we investigate the topic of democratization in the context of QT, particularly quantum computing. The paper contains three main sections. First, we briefly introduce different...journal article 2023
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Sarkar, A. (author), Al-Ars, Z. (author), Bertels, K.L.M. (author)In this research, we extend the universal reinforcement learning agent models of artificial general intelligence to quantum environments. The utility function of a classical exploratory stochastic Knowledge Seeking Agent, KL-KSA, is generalized to distance measures from quantum information theory on density matrices. Quantum process...conference paper 2023
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Gong, J. (author), Charbon-Iwasaki-Charbon, E. (author), Sebastiano, F. (author), Babaie, M. (author)This article presents the first cryogenic phase-locked loop (PLL) operating at 4.2 K. The PLL is designed for the control system of scalable quantum computers. The specifications of PLL are derived from the required control fidelity for a single-qubit operation. By considering the benefits and challenges of cryogenic operation, a dedicated...journal article 2023
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Verduyn, Thomas (author)The need of computational power for engineering applications has been ever increasing and with classical computers approaching their physical limits, new ways of improvement have to be investigated. One of the promising solutions is quantum computing. Most engineering problems require solving a system of linear equations of higher dimensions and...master thesis 2022
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Cerviño Fungueiriño, David Cervino (author)Quantum computers exploit the quantum behavior of quantum bits (qubits) that are typically operated at cryogenic temperature. Qubits require an electronic control interface. Nowadays, such classical electronic controllers use bulky instruments operated far fromthe qubits outside the cryostat. To run practical quantum algorithms, thousands to...master thesis 2022
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Wu, Yu-Wen (author)Voltage references are an essential building block for many electronic systems, such as analog-to-digital and digital-to-analog converters, and voltage regulators. Although state-of-the-art voltage references already demonstrated high performance over the standard temperature range (−40 °C to 125 °C), specific applications require an operating...master thesis 2022
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Crossman, Genya (author)Scientific computing and applied mathematics enable the exploration of and, sometimes even, the simplification of complex systems through various optimized modeling and simulation methods. These fields create and utilize computational resources to do so. Many problems, however, are still unsolvable or very difficult to solve with current well...master thesis 2022
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Damsteegt, Rob (author)Scalable universal quantum computers require classical control hardware, physically close to the quantum devices at cryogenic temperatures. Such classical controllers need digital memory for various applications, ranging from high-speed queues to high-speed and low-speed lookup tables and working memory. The power consumption of the memories...master thesis 2022
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Wanningen, Nicky (author)For scaling up the qubits in silicon quantum computers, it is vital to determine crosstalk effects that can lower the fidelity of the computer. <br/>In this computational project, we examine single-qubit gate-fidelities in the presence of crosstalk for uncoupled spin qubits that are driven with X-gates via electron dipole spin resonance (EDSR)....bachelor thesis 2022
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de Ronde, Folkert (author)The world of quantum computing is still quickly developing and growing as it is searching for the best technology to implement quantum bits. One of these technologies is a diamond-based quantum computer using nitrogen-vacancy (NV) centers. In order to sustain the mentioned growth, the limits of electronics as well as computer engineering need to...master thesis 2022
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Donkers, Huub (author)As the technology of quantum computers improves, the need to evaluate their performance also becomes an important tool for indexing and comparing of quantum performance. Current benchmarking proposals either focus on gate-level evaluation, are centered around a single performance metric, or only evaluate in-house quantum computers. This gives...master thesis 2022
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Lawrie, W.I.L. (author)Quantum computers based on semiconductor quantum dots are proving promising contenders for large scale quantum information processing. In particular, group IV based semiconductor hosts containing an abundance of nuclear spin-zero isotopes have made considerable headway into fulfilling the requirements of a universal quantum computer. Silicon (Si...doctoral thesis 2022
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Vos, David (author)Quantum computing is an emerging field with many promising future applications. <br/>These include, but are not limited to, quantum machine learning, quantum cryptography and quantum chemical engineering.<br/><br/>Before these can be realised, obstacles, which arise due to scaling, need to be overcome.<br/>To accomplish this, quantum processors...bachelor thesis 2022
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Klunder, Tom (author)Quantum computing presents a threat to the current cryptographic standards in place, supporting our digital scoiety. As our lives are increasingly dependent on electronic transactions, our society becomes increasingly vulnerable to distortions of digital trust. By taking a design science research approach, this thesis designs a risk assessment...master thesis 2022
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Xue, X. (author)Benchmarking the performance of a quantum computer is of key importance in identifying and reducing the error sources, and therefore in achieving fault-tolerant quantum computation. In the last decade, qubits made of electron spins in silicon emerged as promising candidates for practical quantum computers. To understand their physical properties...doctoral thesis 2022