Quantum 10, 2094 (2026). https://doi.org/10.22331/q-2026-05-05-2094 Graph states are entangled states that are essential for quantum information processing. As experimental advances enable the realization of large-scale graph states, efficient fidelity estimation methods are crucial for assessing […]
Quantum 10, 2093 (2026). https://doi.org/10.22331/q-2026-05-05-2093 Quantum circuit simulation is paramount to the verification and optimization of quantum algorithms, and considerable research efforts have been made towards efficient simulators. While circuits often contain high-level gates such […]
Quantum 10, 2092 (2026). https://doi.org/10.22331/q-2026-05-05-2092 Calculating the quantum weight enumerator polynomial (WEP) is a valuable tool for characterizing quantum error-correcting (QEC) codes, but it is computationally hard for large or complex codes. The Quantum LEGO […]
Quantum 10, 2091 (2026). https://doi.org/10.22331/q-2026-05-05-2091 Quantum hypergraph states form a generalisation of the graph state formalism that goes beyond the pairwise (dyadic) interactions imposed by remaining inside the Gaussian approximation. Networks of such states are […]
Quantum 10, 2090 (2026). https://doi.org/10.22331/q-2026-05-05-2090 We study higher order quantum maps in the context of a *-autonomous category of affine subspaces. We show that types of higher order maps can be identified with certain Boolean […]
Quantum 10, 2089 (2026). https://doi.org/10.22331/q-2026-04-29-2089 We introduce regular language states, a family of quantum many-body states. They are built from a special class of formal languages, called regular, which has been thoroughly studied in the […]
Quantum 10, 2088 (2026). https://doi.org/10.22331/q-2026-04-28-2088 We prove new monogamy of entanglement bounds for two-local qudit Hamiltonians of rank-one projectors without one-local terms. In particular, we certify the maximum energy in terms of the maximum matching […]
Quantum 10, 2087 (2026). https://doi.org/10.22331/q-2026-04-28-2087 In unitary circuit games, two competing parties, an “entangler” and a “disentangler”, can induce an entanglement phase transition in a quantum many-body system. The transition occurs at a certain rate […]
Quantum 10, 2086 (2026). https://doi.org/10.22331/q-2026-04-28-2086 We introduce $texttt{RandomMeas.jl}$, a modular and high-performance open-source software package written in Julia for implementing and analyzing randomized measurement protocols in quantum computing. Randomized measurements provide a powerful framework for […]
Quantum 10, 2085 (2026). https://doi.org/10.22331/q-2026-04-28-2085 The coupling of a quantum system to an environment leads generally to decoherence, and it is detrimental to quantum correlations within the system itself. Yet some forms of quantum correlations […]
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