Quantum 9, 1747 (2025). https://doi.org/10.22331/q-2025-05-15-1747 Block Encoding (BE) is a crucial subroutine in many modern quantum algorithms, including those with near-optimal scaling for simulating quantum many-body systems, which often rely on Quantum Signal Processing (QSP). […]
Quantum 9, 1746 (2025). https://doi.org/10.22331/q-2025-05-15-1746 Spontaneous symmetry breaking in systems with symmetry is a cornerstone phenomenon accompanying second-order phase transitions. Here, we predict the opposite phenomenon, namely, spontaneous symmetry emergence in a system that lacks […]
Quantum 9, 1745 (2025). https://doi.org/10.22331/q-2025-05-15-1745 Quantum machine learning (QML) has become a promising area for real world applications of quantum computers, but near-term methods and their scalability are still important research topics. In this context, […]
Quantum 9, 1744 (2025). https://doi.org/10.22331/q-2025-05-15-1744 Losses are one of the main bottlenecks for the distribution of entanglement in quantum networks, which can be overcome by the implementation of quantum repeaters. The most basic form of […]
Quantum 9, 1743 (2025). https://doi.org/10.22331/q-2025-05-15-1743 Quantum detailed balance is formulated in terms of elementary transitions, in close analogy to detailed balance in a classical Markov chain on a finite set of points. An elementary transition […]
Quantum 9, 1742 (2025). https://doi.org/10.22331/q-2025-05-13-1742 Time evolution in several classes of quantum devices is generated through the application of quantum gates. Resetting is a critical technological feature in these systems allowing for mid-circuit measurement and […]
Quantum 9, 1741 (2025). https://doi.org/10.22331/q-2025-05-13-1741 Quantum algorithms for Hamiltonian simulation and linear differential equations more generally have provided promising exponential speed-ups over classical computers on a set of problems with high real-world interest. However, extending […]
Quantum 9, 1740 (2025). https://doi.org/10.22331/q-2025-05-12-1740 Understanding how external driving and dissipation jointly influence the dynamics of open quantum systems is essential for advancing the study of non-equilibrium quantum phenomena and developing quantum technologies. The present […]
Quantum 9, 1739 (2025). https://doi.org/10.22331/q-2025-05-12-1739 In this work, we initiate the study of learning quantum processes from quantum statistical queries. We focus on two fundamental learning tasks in this new access model: shadow tomography of […]
Quantum 9, 1738 (2025). https://doi.org/10.22331/q-2025-05-12-1738 We describe a class of spin chains with new physical and computational properties. On the physical side, the spin chains give examples of symmetry-protected topological phases that are defined by […]
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