Quantum 8, 1424 (2024). https://doi.org/10.22331/q-2024-07-25-1424 The Trotter product formula and the quantum Zeno effect are both indispensable tools for constructing time-evolutions using experimentally feasible building blocks. In this work, we discuss assumptions under which quantitative […]
Quantum 8, 1423 (2024). https://doi.org/10.22331/q-2024-07-24-1423 We introduce an adaptable and modular hybrid architecture designed for fault-tolerant quantum computing. It combines quantum emitters and linear-optical entangling gates to leverage the strength of both matter-based and photonic-based […]
Quantum 8, 1422 (2024). https://doi.org/10.22331/q-2024-07-23-1422 We introduce a quantum information theory-inspired method to improve the characterization of many-body Hamiltonians on near-term quantum devices. We design a new class of similarity transformations that, when applied as […]
Quantum 8, 1421 (2024). https://doi.org/10.22331/q-2024-07-22-1421 Identifying phases of matter presents considerable challenges, particularly within the domain of quantum theory, where the complexity of ground states appears to increase exponentially with system size. Quantum many-body systems […]
Quantum 8, 1420 (2024). https://doi.org/10.22331/q-2024-07-22-1420 Several notions of code products are known in quantum error correction, such as hypergraph products, homological products, lifted products, balanced products, to name a few. In this paper we introduce […]
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 […]
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