Quantum 10, 2164 (2026). https://doi.org/10.22331/q-2026-07-18-2164 Quantum many-body scars (QMBS) serve as important examples of ergodicity-breaking phenomena in quantum many-body systems. Despite recent extensive studies, exact QMBS are rare in dimensions higher than one. In this […]
Quantum 10, 2163 (2026). https://doi.org/10.22331/q-2026-07-16-2163 We introduce a new characterisation of determinism in Measurement-Based Quantum Computing (MBQC). The one-way model consists in performing local measurements over a large entangled state represented by a graph. The […]
Quantum 10, 2162 (2026). https://doi.org/10.22331/q-2026-07-15-2162 We present a two-step protocol for quantum measurement tomography that is light on classical co-processing cost and still achieves optimal sample complexity. Given measurement data from a known probe state […]
Quantum 10, 2161 (2026). https://doi.org/10.22331/q-2026-07-15-2161 The MPC-in-the-head technique (Ishai et al., STOC 2007) is a celebrated method to build zero-knowledge protocols with desirable theoretical properties and high practical efficiency. This technique has generated a large […]
Quantum 10, 2160 (2026). https://doi.org/10.22331/q-2026-07-15-2160 The preparation of quantum many-body systems faces the difficulty that in a realistic scenario only few control parameters of the system may be accessible. In this context, an interesting connection […]
Quantum 10, 2159 (2026). https://doi.org/10.22331/q-2026-07-15-2159 We investigate the emergence of cooperative radiation phenomena in ensembles of two-level atoms coupled to a lossy resonant cavity beyond the Markovian and mean-field approximations. By deriving a complete analytical […]
Quantum 10, 2158 (2026). https://doi.org/10.22331/q-2026-07-15-2158 The Quantum Approximate Optimisation Algorithm (QAOA) tackles combinatorial optimisation problems by encoding their solutions into the ground state of an Ising Hamiltonian prepared by a $p$-level parameterised circuit, with the […]
Quantum 10, 2157 (2026). https://doi.org/10.22331/q-2026-07-08-2157 Uncloneable encryption is a cryptographic primitive which encrypts a classical message into a quantum ciphertext, such that two quantum adversaries are limited in their capacity of being able to simultaneously […]
Quantum 10, 2156 (2026). https://doi.org/10.22331/q-2026-07-08-2156 Encoding a qubit in a larger Hilbert space of an oscillator is an efficient way to protect its quantum information against decoherence. Promising examples of such bosonic encodings are the […]
Quantum 10, 2155 (2026). https://doi.org/10.22331/q-2026-07-08-2155 In continuous-variable quantum computation, identifying key elements that enable a quantum computational advantage is a long-standing issue. Starting from the standard results on the necessity of Wigner negativity, we develop […]
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