Paper A decompositional framework for process theories in spacetime Matthias Salzger and John H. Selby, Quantum 10, 1959 (2026). There has been a recent surge of interest within the field of quantum foundations regarding incorporating ideas from general relativity and quantum gravity. However, many quantum information…
Paper Asymptotic robustness of entanglement in noisy quantum networks and graph connectivity Fernando Lledó, Carlos Palazuelos, and Julio I. de Vicente, Quantum 9, 1958 (2025). Quantum networks are promising venues for quantum information processing. This motivates the study of the entanglement properties of the particular multipartite quantum states that underpin…
Paper Isolated zero mode in a quantum computer from a duality twist Sutapa Samanta, Derek S. Wang, Armin Rahmani, and Aditi Mitra, Quantum 9, 1957 (2025). Investigating the interplay of dualities, generalized symmetries, and topological defects beyond theoretical models is an important challenge in condensed matter physics and quantum material…
Paper Quantum Complexity and Chaos in Many-Qudit Doped Clifford Circuits Beatrice Magni and Xhek Turkeshi, Quantum 9, 1956 (2025). We investigate the emergence of quantum complexity and chaos in doped Clifford circuits acting on qudits of odd prime dimension $d$. Using doped Clifford Weingarten calculus and a replica tens…
Paper Quantum Algorithm for Estimating Betti Numbers Using Cohomology Approach Nhat A. Nghiem, Xianfeng David Gu, and Tzu-Chieh Wei, Quantum 9, 1955 (2025). Topological data analysis has emerged as a powerful tool for analyzing large-scale data. An abstract simplicial complex, in principle, can be built from data points, and by using tools from…
Paper Double-bracket algorithm for quantum signal processing without post-selection Yudai Suzuki, Bi Hong Tiang, Jeongrak Son, Nelly H. Y. Ng, Zoe Holmes, and Marek Gluza, Quantum 9, 1954 (2025). Quantum Signal Processing (QSP), a framework for implementing matrix-valued polynomials, is a fundamental primitive in various quantum algorithms. Despite its versatility, a potentially unde…
Paper Ladder Operator Block-Encoding William A. Simon, Carter M. Gustin, Kamil Serafin, Alexis Ralli, Gary R. Goldstein, and Peter J. Love, Quantum 9, 1953 (2025). We describe and analyze LOBE (Ladder Operator Block-Encoding), a framework for block-encoding ladder operators that act upon fermionic and bosonic modes. In this framework, we achieve effici…
Paper Multi-time quantum process tomography on a superconducting qubit Christina Giarmatzi, Tyler Jones, Alexei Gilchrist, Prasanna Pakkiam, Arkady Fedorov, and Fabio Costa, Quantum 9, 1952 (2025). Current quantum technologies are at the cusp of becoming useful, but still face formidable obstacles such as noise. Noise severely limits the ability to scale quantum devices to the point th…
Paper Quantized Markov Chain Couplings that Prepare Qsamples Kristan Temme and Pawel Wocjan, Quantum 9, 1951 (2025). We present a novel approach to quantizing Markov chains. The approach is based on the Markov chain coupling method, which is frequently used to prove fast mixing. Given a particular coupling…
Paper Performance Analysis of Quantum CSS Error-Correcting Codes via MacWilliams Identities Diego Forlivesi, Lorenzo Valentini, and Marco Chiani, Quantum 9, 1950 (2025). We analyze the performance of quantum stabilizer codes, one of the most important classes for practical implementations, on both symmetric and asymmetric quantum channels. To this aim, we fi…
Paper Probes of Full Eigenstate Thermalization in Ergodicity-Breaking Quantum Circuits Gabriel O. Alves, Felix Fritzsch, and Pieter W. Claeys, Quantum 9, 1949 (2025). The eigenstate thermalization hypothesis (ETH) is the leading interpretation in our current understanding of quantum thermalization. Recent results uncovered strong connections between quant…
Paper Quantum Communication Networks Enhanced by Distributed Quantum Memories Xiangyi Meng, Nicolò Lo Piparo, Kae Nemoto, and István A. Kovács, Quantum 9, 1948 (2025). Building large-scale quantum communication networks has its unique challenges. Here, we demonstrate that a network-wide synergistic usage of quantum memories distributed in a quantum communi…
Paper Entangled Subspaces through Algebraic Geometry Masoud Gharahi and Stefano Mancini, Quantum 9, 1947 (2025). We propose an algebraic geometry-inspired approach for constructing entangled subspaces within the Hilbert space of a multipartite quantum system. Specifically, our method employs a modified…
Paper GPU-accelerated Effective Hamiltonian Calculator Abhishek Chakraborty, Taylor L. Patti, Brucek Khailany, Andrew N. Jordan, and Anima Anandkumar, Quantum 9, 1946 (2025). Effective Hamiltonian calculations for large quantum systems can be both analytically intractable and numerically expensive using standard techniques. In this manuscript, we present numerica…
Paper A Novel Stabilizer-based Entanglement Distillation Protocol for Qudits Christopher Popp, Tobias C. Sutter, and Beatrix C. Hiesmayr, Quantum 9, 1945 (2025). Entanglement distillation, the process of converting weakly entangled states into maximally entangled ones using Local Operations and Classical Communication (LOCC), is pivotal for robust en…
Paper Emergent Liouvillian exceptional points from exact principles Shishir Khandelwal and Gianmichele Blasi, Quantum 9, 1944 (2025). Recent years have seen a surge of interest in exceptional points in open quantum systems. The natural approach in this area has been the use of Markovian master equations. While the resultin…
