Quantum 8, 1419 (2024). https://doi.org/10.22331/q-2024-07-19-1419 Quantum networks with multiple sources allow the observation of quantum nonlocality without inputs. Consequently, the incompatibility of measurements is not a necessity for observing quantum nonlocality when one has access […]
Quantum 8, 1418 (2024). https://doi.org/10.22331/q-2024-07-18-1418 Continuous variable quantum key distribution with discrete modulation has the potential to provide information-theoretic security using widely available optical elements and existing telecom infrastructure. While their implementation is significantly simpler […]
Quantum 8, 1417 (2024). https://doi.org/10.22331/q-2024-07-18-1417 Machine learning has shown significant breakthroughs in quantum science, where in particular deep neural networks exhibited remarkable power in modeling quantum many-body systems. Here, we explore how the capacity of […]
Quantum 8, 1416 (2024). https://doi.org/10.22331/q-2024-07-18-1416 Twist defects in surface codes can be used to encode more logical qubits, improve the code rate, and implement logical gates. In this work we provide a rigorous formalism for […]
Quantum 8, 1415 (2024). https://doi.org/10.22331/q-2024-07-17-1415 Many fundamental and key objects in quantum mechanics are linear mappings between particular affine/linear spaces. This structure includes basic quantum elements such as states, measurements, channels, instruments, non-signalling channels and […]
Quantum 8, 1414 (2024). https://doi.org/10.22331/q-2024-07-17-1414 We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum. Our approach is […]
Quantum 8, 1413 (2024). https://doi.org/10.22331/q-2024-07-17-1413 Non-stabilizerness – commonly known as magic – measures the extent to which a quantum state deviates from stabilizer states and is a fundamental resource for achieving universal quantum computation. In […]
Quantum 8, 1412 (2024). https://doi.org/10.22331/q-2024-07-17-1412 Quantum spin liquids and anyons, used to be subjects of condensed matter physics, now are realized in various platforms of qubits, offering unprecedented opportunities to investigate fundamental physics of many-body […]
Quantum 8, 1411 (2024). https://doi.org/10.22331/q-2024-07-15-1411 The quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins, which are encoded in the internal electronic states of the […]
Quantum 8, 1410 (2024). https://doi.org/10.22331/q-2024-07-15-1410 Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and experimentally validate two efficient […]
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