Quantum 9, 1766 (2025). https://doi.org/10.22331/q-2025-06-05-1766 Estimating many-body Hamiltonians has wide applications in quantum technology. By allowing coherent evolution of quantum systems and entanglement across multiple probes, the precision of estimating a fully connected $k$-body interaction […]
Quantum 9, 1765 (2025). https://doi.org/10.22331/q-2025-06-05-1765 The rapid development of quantum computers has enabled demonstrations of quantum advantages on various tasks. However, real quantum systems are always dissipative due to their inevitable interaction with the environment, […]
Quantum 9, 1764 (2025). https://doi.org/10.22331/q-2025-06-04-1764 Simulation of physical systems is one of the most promising use cases of future digital quantum computers. In this work we systematically analyze the quantum circuit complexities of block encoding […]
Quantum 9, 1763 (2025). https://doi.org/10.22331/q-2025-06-04-1763 Tomographic reconstruction of quantum states plays a fundamental role in benchmarking quantum systems and accessing information encoded in quantum-mechanical systems. Among the informationally complete sets of quantum measurements, the tight […]
Quantum 9, 1762 (2025). https://doi.org/10.22331/q-2025-06-04-1762 We adopt a method of the quantum gate teleportation for converting circuit-based quantum computation primitives into fusion networks. By using the presented scheme for the CNOT gate we construct translation […]
Quantum 9, 1761 (2025). https://doi.org/10.22331/q-2025-06-04-1761 In the realm of computational science and engineering, constructing models that reflect real-world phenomena requires solving partial differential equations (PDEs) with different conditions. Recent advancements in neural operators, such as […]
Quantum 9, 1760 (2025). https://doi.org/10.22331/q-2025-06-04-1760 Bell tests have become a powerful tool for quantifying security, randomness, entanglement, and many other properties, as well as for investigating fundamental physical limits. In all these cases, the specific […]
Quantum 9, 1759 (2025). https://doi.org/10.22331/q-2025-06-04-1759 Pseudorandom quantum states (PRSs) and pseudorandom unitaries (PRUs) possess the dual nature of being efficiently constructible while appearing completely random to any efficient quantum algorithm. In this study, we establish […]
Quantum 9, 1758 (2025). https://doi.org/10.22331/q-2025-05-28-1758 We propose a novel Reinforcement Learning (RL) method for optimizing quantum circuits using graph-theoretic simplification rules of ZX-diagrams. The agent, trained using the Proximal Policy Optimization (PPO) algorithm, employs Graph […]
Quantum 9, 1757 (2025). https://doi.org/10.22331/q-2025-05-28-1757 In some physical implementations of quantum computers, 2-qubit operations can be applied only on certain pairs of qubits. Compilation of a quantum circuit into one compliant to such qubit connectivity […]
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