Quantum 9, 1606 (2025). https://doi.org/10.22331/q-2025-01-23-1606 Quantum learning tasks often leverage randomly sampled quantum circuits to characterize unknown systems. An efficient approach known as “circuit reusing,” where each circuit is executed multiple times, reduces the cost […]
Quantum 9, 1605 (2025). https://doi.org/10.22331/q-2025-01-21-1605 Entanglement-based quantum networks exhibit a unique flexibility in the choice of entangled resource states that are then locally manipulated by the nodes to fulfill any request in the network. Furthermore, […]
Quantum 9, 1604 (2025). https://doi.org/10.22331/q-2025-01-21-1604 A quantum position-verification scheme attempts to verify the spatial location of a prover. The prover is issued a challenge with quantum and classical inputs and must respond with appropriate timings. […]
Quantum 9, 1603 (2025). https://doi.org/10.22331/q-2025-01-21-1603 Quantum state purification is the task of recovering a nearly pure copy of an unknown pure quantum state using multiple noisy copies of the state. This basic task has applications […]
Quantum 9, 1602 (2025). https://doi.org/10.22331/q-2025-01-20-1602 In the last two decades, there has been much effort in finding secure protocols for two-party cryptographic tasks. It has since been discovered that even with quantum mechanics, many such […]
Quantum 9, 1601 (2025). https://doi.org/10.22331/q-2025-01-20-1601 Split Cayley hexagons of order two are distinguished finite geometries living in the three-qubit symplectic polar space in two different forms, called classical and skew. Although neither of the two […]
Quantum 9, 1600 (2025). https://doi.org/10.22331/q-2025-01-20-1600 In this work, we introduce a fast implementation of the minimum-weight perfect matching (MWPM) decoder, the most widely used decoder for several important families of quantum error correcting codes, including […]
Quantum 9, 1599 (2025). https://doi.org/10.22331/q-2025-01-20-1599 Hardy’s argument constitutes an elegantly logical test for identifying nonlocal features of multipartite correlations. In this paper, we investigate Hardy’s nonlocal behavior within a broad class of operational theories, including […]
Quantum 9, 1598 (2025). https://doi.org/10.22331/q-2025-01-15-1598 In a Generalised Probabilistic Theory (GPT) equipped additionally with some extra geometric structure we define the morphophoric measurements as those for which the measurement map sending states to distributions of […]
Quantum 9, 1597 (2025). https://doi.org/10.22331/q-2025-01-15-1597 In this work, we consider a fundamental task in quantum many-body physics – finding and learning ground states of quantum Hamiltonians and their properties. Recent works have studied the task […]
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