Quantum 10, 2124 (2026). https://doi.org/10.22331/q-2026-06-01-2124 We present a new simulation-secure quantum oblivious transfer (QOT) protocol based on one-way functions in the plain model. With a focus on practical implementation, our protocol surpasses prior works in […]
Quantum 10, 2123 (2026). https://doi.org/10.22331/q-2026-06-01-2123 We investigate quantum cellular automata (QCA) on one-dimensional spin systems defined over a subalgebra of the full local operator algebra – the symmetric subalgebra under a finite Abelian group symmetry […]
Quantum 10, 2122 (2026). https://doi.org/10.22331/q-2026-06-01-2122 This paper explores the sensitivity gains afforded by spin-squeezed states in atom interferometry, in particular using Bragg diffraction. We introduce a generalised input-output formalism that accurately describes realistic, non-unitary interferometers, […]
Quantum 10, 2121 (2026). https://doi.org/10.22331/q-2026-05-29-2121 A rigorous characterization of the information content of any highest-spin three-fermion wave function is presented. It is based upon a formal decomposition of the wave function into a finite set […]
Quantum 10, 2120 (2026). https://doi.org/10.22331/q-2026-05-29-2120 Haar random states are fundamental objects in quantum information theory and quantum computing. We study the density matrix resulting from sampling $t$ copies of a $d$-dimensional quantum state according to […]
Quantum 10, 2119 (2026). https://doi.org/10.22331/q-2026-05-29-2119 Dynamical Lie algebras (DLAs) have emerged as a valuable tool in the study of parameterized quantum circuits, helping to characterize both their expressiveness and trainability. In particular, the absence or […]
Quantum 10, 2118 (2026). https://doi.org/10.22331/q-2026-05-29-2118 We propose an efficient classical algorithm to estimate the Neural Tangent Kernel (NTK) associated with a broad class of quantum neural networks. These networks consist of arbitrary unitary operators belonging […]
Quantum 10, 2117 (2026). https://doi.org/10.22331/q-2026-05-29-2117 The availability of certain entangled resource states (catalyst states) can enhance the rate of converting several less entangled states into fewer highly entangled states in a process known as catalytic […]
Quantum 10, 2116 (2026). https://doi.org/10.22331/q-2026-05-26-2116 The Frauchiger–Renner paradox derives an inconsistency when quantum theory is used to describe the use of itself, by means of a scenario where agents model other agents quantumly and reason […]
Quantum 10, 2115 (2026). https://doi.org/10.22331/q-2026-05-22-2115 In classical information theory, the Doeblin coefficient of a classical channel provides an efficiently computable upper bound on the total-variation contraction coefficient of the channel, leading to what is known […]
Recent Comments