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Avis, G. (author)The future quantum internet promises to create shared quantum entanglement between any two points on Earth, enabling applications such as provably-secure communication and connecting quantum computers. A popular method for distributing entanglement is by sending entangled photons through optical fiber. However, the probability of successful...doctoral thesis 2023
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Hermans, S.L.N. (author), Pompili, M. (author), Dos Santos Martins, L. (author), Rodriguez-Pardo 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 single-photon, protocol entanglement is heralded by generation of qubit-photon entangled states and subsequent detection of a single photon behind a beam splitter....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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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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van Poelgeest, Sam (author)In the field of quantum information theory, it is well-known that the purely quantum phenomenon called quantum entanglement can boost the capacity of a quantum channel, which is called the superadditivity of the capacity. Shor showed in his breakthrough paper on the equivalence of additivity conjectures that this superadditivity is equivalent to...master thesis 2022
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Zhang, Yuning (author)Quantum decoherence is one of the most substantial challenges on the way to fullyfledged quantum technology. Noise mitigation based on dynamical control techniques, aside from error correction, is known to be another effective approach to protect qubits from decoherence. In this thesis, we studied the dynamics of a spin qubit interacting with a...master thesis 2022
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SAMIOTIS, MARIOS (author)In this work, we first analyse a theoretical technique based on entropic inequalities, which in principle can be used to compare classical and quantum algorithms running on noisy quantum devices. The technique has been used in the past for depolarizing noise, and has shown that for NISQ variational quantum algorithms (VQAs) to give an advantage...master thesis 2022
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Goodenough, K.D. (author)The research presented in this thesis focused on the problem of entanglement distribution. Simply put, the two main problems facing (practical) implementation of entanglement distribution over quantum networks are loss and noise. Quantum repeaters are meant to overcome the effects of loss, but in practice their implementation always comes at the...doctoral thesis 2022
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Stroeks, M.E.H.M. (author), Helsen, J. (author), Terhal, B.M. (author)We consider the task of spectral estimation of local quantum Hamiltonians. The spectral estimation is performed by estimating the oscillation frequencies or decay rates of signals representing the time evolution of states. We present a classical Monte Carlo (MC) scheme which efficiently estimates an imaginary-time, decaying signal for...journal article 2022
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Moody, Galan (author), Sorger, Volker J. (author), Blumenthal, Daniel J. (author), Juodawlkis, Paul W. (author), Loh, William (author), Jones, Alex E. (author), Pingault, B.J. (author), Elshaari, Ali W. (author), Zwiller, Val (author)Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quantum photonic integrated circuits (QPICs) with accompanying electronics. In the last decade,...journal article 2022
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van Mil, Juliette (author)This report reviews two quantum key distribution (QKD) protocols: the BB84 protocol and the measurement device independent (MDI) QKD protocol. The goal of this report is to recreate the security proof of the BB84 protocol, to generate the secret key rate for a practical application of the BB84 protocol, both with and without decoy states, and to...bachelor thesis 2021
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Zutt, Nico (author)The development of quantum computers is a monumental challenge for modern physics. One proposed pathway toward a fully scalable and fault-tolerant quantum computer involves the development of a quantum network. Such a network would have applications ranging from distributed quantum computation to fundamentally secure quantum communication. The...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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Mor Ruiz, Maria Flors (author)Quantum communication can enable new features that are provably impossible with classical communication alone. However, the optical fibers used to send the quantum information are inherently lossy. To overcome the exponential losses over distance so-called quantum repeaters are needed to amplify the signal. As opposed to memory-based approaches,...master thesis 2021
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Gauthier, Scarlett (author)Preparation of multi-partite entangled quantum states under realistic experimental conditions invariably results in states with non-unit fidelity to the target state. Purification protocols address the need for higher fidelity states than what can be directly prepared. These protocols consume several noisy input states and return an output state...master thesis 2021
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Aiello, Clarice D. (author), Awschalom, D. D. (author), Bernien, Hannes (author), Brower, Tina (author), Brown, Kenneth R. (author), Ross, R. S. (author), Singh, M. (author), Steuerman, David W. (author), Thijssen, J.M. (author)Interest in building dedicated quantum information science and engineering (QISE) education programs has greatly expanded in recent years. These programs are inherently convergent, complex, often resource intensive and likely require collaboration with a broad variety of stakeholders. In order to address this combination of challenges, we...review 2021
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Stroeks, Maarten (author)Quantum systems are in general not e_ciently simulatable by classical means. If one wishes to determine (some of) the eigenvalues of a Hamiltonian H that is associated with a quantum system, there are two favoured strategies: Quantum simulation and quantum Monte Carlo schemes. The former strategy uses an experimentally well-controllable quantum...master thesis 2020
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Maier, David (author)A Quantum Internet will enable new applications that are provably impossible with classical communication alone. However, the optical fibers used to carry the quantum information are inherently lossy. To overcome the exponential losses over distance so-called quantum repeaters are needed to amplify the signal.<br/>In this thesis we investigate...master thesis 2020
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van Houte, Roy (author)Quantum coin flipping is a cryptographic primitive in which two or more parties that do not trust each other want establish a fair coin flip. These parties are not physically near each other and use quantum communication channels to interact. A quality of protocols is measured by the best possible cheating strategy, which is the solution of a...master thesis 2020
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- Wubben, Leon (author) master thesis 2019