Searched for: author%3A%22Feld%2C+S.%22
(1 - 19 of 19)
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Bandic, M. (author), Prielinger, L.P. (author), Nublein, Jonas (author), Ovide, Anabel (author), Rodrigo, Santiago (author), van Someren, J. (author), Vardoyan, G.S. (author), Almudever, Carmen G. (author), Feld, S. (author)
Modular quantum computing architectures are a promising alternative to monolithic QPU (Quantum Processing Unit) designs for scaling up quantum devices. They refer to a set of interconnected QPUs or cores consisting of tightly coupled quantum bits that can communicate via quantum-coherent and classical links. In multi-core architectures, it is...
conference paper 2023
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Van Der Linde, Stan (author), De Kok, Willem (author), Bontekoe, Tariq (author), Feld, S. (author)
Compiling a quantum circuit for specific quantum hardware is a challenging task. Moreover, current quantum computers have severe hardware limitations. To make the most use of the limited resources, the compilation process should be optimized. To improve currents methods, Reinforcement Learning (RL), a technique in which an agent interacts...
conference paper 2023
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Steinberg, M.A. (author), Feld, S. (author), Jahn, Alexander (author)
Holographic quantum-error correcting codes are models of bulk/boundary dualities such as the anti-de Sitter/conformal field theory (AdS/CFT) correspondence, where a higher-dimensional bulk geometry is associated with the code’s logical degrees of freedom. Previous discrete holographic codes based on tensor networks have reproduced the general...
journal article 2023
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Ovide, Anabel (author), Rodrigo, Santiago (author), Bandic, M. (author), van Someren, J. (author), Feld, S. (author), Abadal, Sergi (author), Alarcon, Eduard (author), Almudever, Carmen G. (author)
Current monolithic quantum computer architectures have limited scalability. One promising approach for scaling them up is to use a modular or multi-core architecture, in which different quantum processors (cores) are connected via quantum and classical links. This new architectural design poses new challenges such as the expensive inter-core...
conference paper 2023
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Stein, Jonas (author), Ott, Dominik (author), Nüßlein, Jonas (author), Bucher, David (author), Schönfeld, Mirco (author), Feld, S. (author)
The analysis of network structure is essential to many scientific areas ranging from biology to sociology. As the computational task of clustering these networks into partitions, i.e., solving the community detection problem, is generally NP-hard, heuristic solutions are indispensable. The exploration of expedient heuristics has led to the...
journal article 2023
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Bandic, M. (author), Almudever, Carmen G. (author), Feld, S. (author)
To execute quantum circuits on a quantum processor, they must be modified to meet the physical constraints of the quantum device. This process, called quantum circuit mapping, results in a gate/circuit depth overhead that depends on both the circuit properties and the hardware constraints, being the limited qubit connectivity a crucial...
journal article 2023
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Zielinski, Sebastian (author), Gabor, Thomas (author), Nüßlein, Jonas (author), Linnhoff-Popien, Claudia (author), Stein, Jonas (author), Feld, S. (author)
To solve 3sat instances on quantum annealers they need to be transformed to an instance of Quadratic Unconstrained Binary Optimization (QUBO). When there are multiple transformations available, the question arises whether different transformations lead to differences in the obtained solution quality. Thus, in this paper we conduct an...
conference paper 2023
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Zielinski, Sebastian (author), Nüßlein, Jonas (author), Stein, Jonas (author), Gabor, Thomas (author), Linnhoff-Popien, Claudia (author), Feld, S. (author)
One way of solving 3sat instances on a quantum computer is to transform the 3sat instances into instances of Quadratic Unconstrained Binary Optimizations (QUBOs), which can be used as an input for the QAOA algorithm on quantum gate systems or as an input for quantum annealers. This mapping is performed by a 3sat-to-QUBO transformation....
journal article 2023
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Bhatnagar, Dhruv (author), Steinberg, M.A. (author), Elkouss Coronas, D. (author), Almudever, Carmen (author), Feld, S. (author)
Flag-style fault-tolerance has become a linchpin in the realization of small fault-tolerant quantum-error correction experiments. The flag protocol's utility hinges on low qubit over-head, which is typically much smaller than in other approaches. However, as in most fault-tolerance protocols, the advantages of flag-style error correction come...
conference paper 2023
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Paraskevopoulos, N. (author), Sebastiano, F. (author), Almudever, Carmen G. (author), Feld, S. (author)
Despite Noisy Intermediate-Scale Quantum devices being severely constrained, hardware- and algorithm-aware quantum circuit mapping techniques have been developed to enable successful algorithm executions. Not so much attention has been paid to mapping and compilation implementations for spin-qubit quantum processors due to the scarce...
journal article 2023
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Steinberg, M.A. (author), Feld, S. (author), Almudever, Carmen G. (author), Marthaler, Michael (author), Reiner, Jan Michael (author)
The qubit-mapping problem aims to assign and route qubits of a quantum circuit onto an noisy intermediate-scale quantum (NISQ) device in an optimized fashion, with respect to some cost function. Finding an optimal solution to this problem is known to scale exponentially in computational complexity; as such, it is imperative to investigate...
journal article 2022
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Lang, Jonas (author), Zielinski, Sebastian (author), Feld, S. (author)
In this work, we introduce a new workflow to solve portfolio optimization problems on annealing platforms. We combine a classical preprocessing step with a modified unconstrained binary optimization (QUBO) model and evaluate it using simulated annealing (classical computer), digital annealing (Fujitsu’s Digital Annealing Unit), and quantum...
journal article 2022
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Rodrigo, Santiago (author), Spanò, Domenico (author), Bandic, M. (author), Abadal, Sergi (author), van Someren, J. (author), Ovide, Anabel (author), Feld, S. (author), Almudéver, Carmen G. (author), Alarcón, Eduard (author)
Quantum many-core processors are envisioned as the ultimate solution for the scalability of quantum computers. Based upon Noisy Intermediate-Scale Quantum (NISQ) chips interconnected in a sort of quantum intranet, they enable large algorithms to be executed on current and close future technology. In order to optimize such architectures, it is...
conference paper 2022
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Gabor, Thomas (author), Rosenfeld, Marian Lingsch (author), Linnhoff-Popien, Claudia (author), Feld, S. (author)
Quadratic unconstrained binary optimization (QUBO) has become the standard format for optimization using quantum computers, i.e., for both the quantum approximate optimization algorithm (QAOA) and quantum annealing (QA). We present a toolkit of methods to transform almost arbitrary problems to QUBO by (i) approximating them as a polynomial and...
conference paper 2022
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Bandic, M. (author), Feld, S. (author), Almudever, Carmen G. (author)
The progress in developing quantum hardware with functional quantum processors integrating tens of noisy qubits, together with the availability of near-term quantum algorithms has led to the release of the first quantum computers. These quantum computing systems already integrate different software and hardware components of the so-called “full...
conference paper 2022
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Barzen, Johanna (author), Leymann, Frank (author), Feld, S. (author), Wimmer, Manuel (author)
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
conference paper 2022
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Nüßlein, Jonas (author), Gabor, Thomas (author), Linnhoff-Popien, Claudia (author), Feld, S. (author)
Quadratic Unconstrained Binary Optimization (QUBO) can be seen as a generic language for optimization problems. QUBOs attract particular attention since they can be solved with quantum hardware, like quantum annealers or quantum gate computers running QAOA. In this paper, we present two novel QUBO formulations for k-SAT and Hamiltonian Cycles...
conference paper 2022
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Roch, Christoph (author), Winderl, David (author), Linnhoff-Popien, Claudia (author), Feld, S. (author)
The Stable Marriage Problem (SMP) describes the problem, of finding a stable matching between two equally sized sets of elements (e.g., males and females) given an ordering of preferences for each element. A matching is stable, when there does not exist any match of a male and female which both prefer each other to their current partner under...
conference paper 2022
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Barzen, Johanna (author), Feld, S. (author), Leymann, Frank (author), Wild, Karoline (author)
contribution to periodical 2021
Searched for: author%3A%22Feld%2C+S.%22
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