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Hermans, S.L.N. (author), Pompili, M. (author), Dos Santos Martins, L. (author), RodriguezPardo Montblanch, A. (author), Beukers, H.K.C. (author), Baier, S. (author), Borregaard, J. (author), Hanson, R. (author)The generation of entanglement between remote matter qubits has developed into a key capability for fundamental investigations as well as for emerging quantum technologies. In the singlephoton, protocol entanglement is heralded by generation of qubitphoton entangled states and subsequent detection of a single photon behind a beam splitter....journal article 2023
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MIYAWAKI, YU (author)Entanglement is an essential resource for a variety of applications, such as distributed quantum computing and quantum cryptography. However, longdistance entanglement generation is challenging because of two reasons: photon loss occurs as an exponential function of distance through an optical fiber and the nocloning theorem prevent us from...master thesis 2022
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SOTIROPOULOS, YORGOS (author)High fidelity GHZ states among remote nodes is a precious commodity which can allow for nonlocal stabilizer measurements and thus pave the way for a modular faulttolerant quantum computer. To this end, we extend the high fidelity intracavity gate introduced by Borregaard et al. (2015) to distributed paradigm, consisting of SnVinspired atomic...master thesis 2022
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Dahlberg, E.A. (author), van der Vecht, B. (author), Delle Donne, C. (author), Skrzypczyk, M.D. (author), te Raa, I. (author), Kozlowski, W. (author), Wehner, S.D.C. (author)We introduce NetQASM, a lowlevel instruction set architecture for quantum internet applications. NetQASM is a universal, platformindependent and extendable instruction set with support for local quantum gates, powerful classical logic and quantum networking operations for remote entanglement generation. Furthermore, NetQASM allows for close...journal article 2022
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Teepe, Annick (author)Generation of high fidelity entanglement between quantum nodes is a key component of a future quantum internet. Heralded entanglement generation of two spatially separated qubit nodes can be established by interference and measurement of two photons, each entangled with one qubit state. The twonode entanglement fidelity is limited by the degree...master thesis 2021
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Bharos, Niveda (author)Many applications of quantum communication require a high amount of entanglement between the states of two separated parties, for example quantum teleportation or superdense coding. However, when states are locally entangled and then separated, errors arise during transportation of the qubits. This results in a lower amount of entanglement...bachelor thesis 2021
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Klijnjan, Tim (author)Synchronisation is the remarkable phenomenon of inphase movement of coupled oscillators during a prolonged period of time, which even occurs when these have different natural frequencies. This property is used in many fields like physics, biology and chemistry, to model various system behaviours, for instance: circadian rhythms in the chemistry...bachelor thesis 2021
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Dahlberg, E.A. (author)Quantum mechanics shows that if one is able to generate and manipulate entanglement over a distance, one is able to perform certain tasks which are impossible using only classical communication. Classical communication refers to what is used in the Internet of today. A quantum internet would therefore bring new capabilities to our highly...doctoral thesis 2021
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Falamarzi Askarani, M. (author), Chakraborty, K. (author), Castro do Amaral, G. (author)Realization of a globespanning quantum network is a current worldwide goal, where near and long term implementations will benefit from connectivity between platforms optimized for specific tasks. Towards this goal, a quantum network architecture is herewith proposed whereby quantum processing devices based on NV colour centers act as...journal article 2021
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Horta Ferreira da Silva, F. (author), TorresKnoop, Ariana (author), Coopmans, T.J. (author), Maier, D.J. (author), Wehner, S.D.C. (author)Longdistance quantum communication via entanglement distribution is of great importance for the quantum internet. However, scaling up to such long distances has proved challenging due to the loss of photons, which grows exponentially with the distance covered. Quantum repeaters could in theory be used to extend the distances over which...journal article 2021
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Bosma, Jan (author)The first part of this thesis provides a mathematical description for bipartite quantum correlations, aiming to analyze the geometry of several sets of correlations. We explain why quantum entanglement can be used to simulate shared randomness: C<sub>loc</sub>(Γ) ⊆ C<sub>q</sub><sup>d</sup>(Γ) for a sufficiently large d. The known bound for this...bachelor thesis 2020
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van Laarhoven, Menno (author)The concept of entanglement is one of the distinguishing features in quantum mechanics. Information about one particle can determine the state of another particle. This information and entanglement in subsystems is quantified by the entanglement entropy. The entanglement entropy has become an important research topic in recent years....bachelor thesis 2020
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Jansen, S.E.D. (author)This thesis deals with nto1 entanglement distillation protocols for bipartite quantum systems in a group theoretical setting. The local operations in the protocols are restricted to Clifford operations. An efficient representation of the elements of the Clifford group in terms of binary matrices is presented. Moreover, a characterization of...bachelor thesis 2020
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Dirkse, B. (author), Pompili, M. (author), Hanson, R. (author), Walter, Michael (author), Wehner, S.D.C. (author)The purpose of an entanglement witness experiment is to certify the creation of an entangled state from a finite number of trials. The statistical confidence of such an experiment is typically expressed as the number of observed standard deviations of witness violations. This method implicitly assumes that the noise is wellbehaved so that...journal article 2020
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Loor, Stephan (author)In this thesis, two topics are studied: mathematical inequalities and nonlinear quantum entanglement witnesses. First, various inequalities, like the CauchySchwarz inequality (on finite dimensional vector spaces) and Jensen's inequality, along with their extensions and generalisations, are proved and discussed. The intimate relationship...bachelor thesis 2019
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Ivlev, Sasha (author)This thesis will focus on verifying the arealaw for the entanglement entropy SN for spin1 2 lattice systems in 2 dimensions, with ferromagnetic interactions deﬁned by the nearest neighbour XXmodel. The arealaw implies that the SN of a subsystem is expected to scale proportionally to the size of the boundary through which that subsystem...bachelor thesis 2019
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 Rozpedek, F.D. (author) doctoral thesis 2019
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ter Hoeven, Roeland (author)The realisation of a quantum network in the near future has been made possible by the developments in qubit systems. Links between quantum nodes in major cities in The Netherlands are scheduled to be demonstrated by 2020. There are many things that need to be considered in the development of a quantum network, in this thesis a few of these will...master thesis 2018
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Lipinska, V. (author), Curchod, Florian J. (author), Máttar, Alejandro (author), Acín, Antonio (author)While all bipartite pure entangled states are known to generate correlations violating a Bell inequality, and are therefore nonlocal, the quantitative relation between pure state entanglement and nonlocality is poorly understood. In fact, some Bell inequalities are maximally violated by nonmaximally entangled states and this phenomenon is...journal article 2018
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Bäuml, S.M.G. (author), Das, Siddhartha (author), Wilde, Mark M. (author)Bipartite quantum interactions have applications in a number of different areas of quantum physics, reaching from fundamental areas such as quantum thermodynamics and the theory of quantum measurements to other applications such as quantum computers, quantum key distribution, and other information processing protocols. A particular aspect of...journal article 2018
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