Quantum 9, 1693 (2025). https://doi.org/10.22331/q-2025-04-07-1693 Spatially-coupled (SC) codes is a class of convolutional LDPC codes that has been well investigated in classical coding theory thanks to their high performance and compatibility with low-latency decoders. We […]
Quantum 9, 1692 (2025). https://doi.org/10.22331/q-2025-04-07-1692 The dynamics of monitored systems can exhibit a measurement-induced phase transition (MIPT) between entangling and disentangling phases, tuned by the measurement rate. When the dynamics obeys a continuous symmetry, the […]
Quantum 9, 1691 (2025). https://doi.org/10.22331/q-2025-04-07-1691 Quantum money is the task of verifying the validity of banknotes while ensuring that they cannot be counterfeited. Public-key quantum money allows anyone to perform verification, while the private-key setting […]
Quantum 9, 1690 (2025). https://doi.org/10.22331/q-2025-04-07-1690 High-dimensional quantum computing has generated significant interest due to its potential to address scalability and error correction challenges faced by traditional qubit-based systems. This paper investigates the Average Gate Fidelity […]
Quantum 9, 1689 (2025). https://doi.org/10.22331/q-2025-04-03-1689 Learning in games has emerged as a powerful tool for machine learning with numerous applications. Quantum games model interactions between strategic players who have access to quantum resources, and several […]
Quantum 9, 1688 (2025). https://doi.org/10.22331/q-2025-04-03-1688 Complexity theory typically focuses on the difficulty of solving computational problems using classical inputs and outputs, even with a quantum computer. In the quantum world, it is natural to apply […]
Quantum 9, 1687 (2025). https://doi.org/10.22331/q-2025-04-03-1687 This paper introduces quantum edge detection, aimed at locating boundaries of quantum domains where all particles share the same pure state. Focusing on the 1D scenario of a string of […]
Quantum 9, 1686 (2025). https://doi.org/10.22331/q-2025-04-03-1686 What is fundamentally quantum? We argue that most of the features, problems, and paradoxes – such as the measurement problem, the Wigner’s friend paradox and its proposed solutions, single particle […]
Quantum 9, 1685 (2025). https://doi.org/10.22331/q-2025-04-03-1685 We study free fermion systems under adaptive quantum dynamics consisting of unitary gates and projective measurements followed by corrective unitary operations. We further introduce a classical flag for each site, […]
Quantum 9, 1684 (2025). https://doi.org/10.22331/q-2025-04-03-1684 The fidelity of quantum operations is often limited by incoherent errors, which typically can be modeled by fundamental Markovian noise processes such as amplitude damping and dephasing. In Phys. Rev. […]
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