Quantum 8, 1580 (2024). https://doi.org/10.22331/q-2024-12-27-1580 Tensor network contractions are widely used in statistical physics, quantum computing, and computer science. We introduce a method to efficiently approximate tensor network contractions using low-rank approximations, where each intermediate […]
Quantum 8, 1579 (2024). https://doi.org/10.22331/q-2024-12-27-1579 As a signal recovery algorithm, compressed sensing is particularly effective when the data has low complexity and samples are scarce, which aligns natually with the task of quantum phase estimation […]
Quantum 8, 1578 (2024). https://doi.org/10.22331/q-2024-12-27-1578 The rotation of trapped molecules offers a promising platform for quantum technologies and quantum information processing. In parallel, quantum error correction codes that can protect quantum information encoded in rotational […]
Quantum 8, 1577 (2024). https://doi.org/10.22331/q-2024-12-27-1577 As current experiments already realize small quantum circuits on error corrected qubits, it is important to fully understand the effect of physical errors on the logical error channels of these […]
Quantum 8, 1576 (2024). https://doi.org/10.22331/q-2024-12-23-1576 Understanding the influence of measurements on the properties of many-body systems is a fundamental problem in quantum mechanics and for quantum technologies. This paper explores how a finite density of […]
Quantum 8, 1575 (2024). https://doi.org/10.22331/q-2024-12-23-1575 Quantum Key Distribution (QKD) enables secret key exchange between two remote parties with information-theoretic security rooted in the laws of quantum physics. Encoding key information in continuous variables (CV), such […]
Quantum 8, 1574 (2024). https://doi.org/10.22331/q-2024-12-23-1574 Photon loss represents a major challenge for the implementation of quantum communication protocols with untrusted devices, e.g. in the device-independent (DI) or semi-DI approaches. Determining critical loss thresholds is usually […]
Quantum 8, 1573 (2024). https://doi.org/10.22331/q-2024-12-18-1573 We introduce Port-Based State Preparation (PBSP), a teleportation task where Alice holds a complete classical description of the target state and Bob’s correction operations are restricted to only tracing out […]
Quantum 8, 1572 (2024). https://doi.org/10.22331/q-2024-12-18-1572 Non-destructive heralded entanglement with photons is a valuable resource for quantum information processing. However, they generally entail ancillary particles and modes that amplify the circuit intricacy. To address this challenge, […]
Quantum 8, 1571 (2024). https://doi.org/10.22331/q-2024-12-18-1571 Optimized quantum control can enhance the performance and noise resilience of quantum metrology. However, the optimization quickly becomes intractable when multiple control operations are applied sequentially. In this work, we […]
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