Fisher-Orthogonal Memory in Quantum Reservoir ComputingQuantum reservoir computing processes temporal information through driven many-body dynamics, but its performance is ultimately limited by how accurately past inputs can be extracted from finite…Ce Wang, Xingze Qiu·Jul 31, 2026SaveLearn
Chiral magnons for spin-qubit state transferWe propose a protocol where chiral magnons mediate a state transfer between two distant spin qubits. The protocol is implemented by varying the coupling between the spin qubits and the magnons in…Martijn Dols, Carlos Gonzalez-Ballestero, Mikhail Cherkasskii et al.·Jul 31, 2026SaveLearn
Towards the Characterization of Logical Errors in Distributed Lattice SurgeryDistributed quantum computing offers a scalable alternative to monolithic quantum processors by networking smaller quantum modules through shared entangled pairs. A central challenge in this setting…Nitish Kumar Chandra, Reza Nejabati, Eneet Kaur·Jul 31, 2026SaveLearn
Entanglement in bipartite systems with symmetry: coupled chaotic kicked Bose-Hubbard systemsWe investigate the average eigenstate entanglement in a bipartite many-body system which exhibits a breaking of two local conservation laws into a global conserved quantity. Such a setting is…J. Himmelsbach, M. F. I. Kieler, A. Bäcker·Jul 31, 2026SaveLearn
Transpiler Autotuning with Predictive Models for Quantum Circuit OptimizationQuantum software engineering is an emerging research field focusing on efficiently embedding the quantum programming paradigm into existing software ecosystems. A key aspect of this field is the…Piotr Malkowski, Domenik Eichhorn, Joshua Ammermann et al.·Jul 31, 2026SaveLearn
Numerical Optimization of Two-Qubit Gates in Silicon Flip-Flop Qubit Arrays under Electrical ControlSilicon-based donor flip-flop qubits offer a promising path toward scalable, fault-tolerant quantum computing by combining the long coherence times of nuclear spins with fast, fully electrical…Lorenzo D'Onofrio, Elena Ferraro, Marco De Michielis·Jul 31, 2026SaveLearn
On the Origin of Beyond-Classical Advantage in the Parity-Permutation ProblemWe investigate the task of identifying the parity (odd vs even) of an unknown permutation applied to n particles. Classically, using fewer than n distinct labels per particle limits the success…Jayashree Karmakar, Biswadeep Chatterjee, Rafiuddin Gazi et al.·Jul 31, 2026SaveLearn
Optimal complex conjugation of unknown isometry channelsAccess to the complex conjugate of an unknown quantum channel is a useful resource in quantum oracle problems, motivating the question of how such access can be simulated using only a limited number…Satoshi Yoshida, Mio Murao·Jul 31, 2026SaveLearn
Finite-size reliability of homothetic quantum Otto enginesHomothetic quantum Otto engines---where all populated energy gaps are rescaled by a common factor---provide a reference model in which the quasistatic stochastic efficiency is trajectory-independent…Gabriella G. Damas, Clebson Cruz, Norton G. de Almeida et al.·Jul 31, 2026SaveLearn
Nuclear Spin Squeezing Based on Spin-Exchange CollisionsIsolation from environment leads to the days-long lifetime of noble-gas nuclear spins, but also brings great challenges to the preparation, manipulation, and measurement of nuclear-spin quantum…He-bin Zhang, Yuanjiang Tang, Yong-Chun Liu·Jul 31, 2026SaveLearn
Bell violation with path-entangled number states under realistic detectionA single photon delocalised over two modes is entangled, and whether that entanglement can violate a Bell inequality has been disputed for three decades. In principle it is settled: the surviving…Christoph F. Wildfeuer·Jul 31, 2026SaveLearn
Construction of Sets of Orthogonal Quantum States with Minimal Nonlocality in Bipartite and Tripartite Systems of Unequal Local DimensionsThe research on minimal nonlocality aims to determine the minimal cardinality of nonlocal sets of quantum states. However, the construction of a nonlocal set of states in bipartite or tripartite…Ben-Hao Zhao, Dong-Huan Jiang, Yu-Guang Yang et al.·Jul 31, 2026SaveLearn
Parent Hamiltonian and intrinsic phase transition in non-Hermitian photonic systemsNon-Hermitian systems host phenomena absent in Hermitian physics, but realizing Hamiltonians with intrinsic non-Hermitian properties remains challenging. The theoretical method of non-Hermitian…Yuntao Xiao, Yuchen Guo, Xiaojian Huang et al.·Jul 31, 2026SaveLearn
The Shape of Information: Global Information Geometric Limits in Multi-task Quantum SystemsFuture quantum networks are expected to perform multiple tasks simultaneously within a single system, such as integrated sensing and communication (ISAC) architectures. Despite various metrics, we…Zishuo Ren, Ziyang Chen, Hong Guo·Jul 31, 2026SaveLearn
Optically Resolved Excited State Hyperfine Structure of a Silicon Colour Centre in the Telecom BandsNuclear spin qubits in silicon offer exceptionally coherent quantum memory, and optically-interfaced spins are a promising platform for both quantum networking and distributed quantum computing. It…Austin Woolverton, Nicholas Brunelle, Mehdi Keshavarz et al.·Jul 31, 2026SaveLearn
Error-Generator-Level Compression for Fast Quantum GatesFast quantum gates in multilevel systems require suppressing many coherent-error channels using pulses that remain simple to implement. We introduce error-generator-level compression, a Magnus-based…Razvan Stanescu, Hugo Ribeiro·Jul 31, 2026SaveLearn
Pauli Encodings & Unclonable EncryptionThe unclonable bit question asks whether quantum encryption can prevent an adversary from producing two systems that both reveal the plaintext once the key is disclosed. We introduce and study Pauli…Pierre Botteron, Sébastien Designolle, Omar Fawzi·Jul 31, 2026SaveLearn
Asymmetric quantum information scrambling in inhomogeneous XXZ spin chainsInhomogeneous systems have become increasingly relevant in experimentally engineered quantum many-body systems, where spatially varying interaction strengths can significantly influence…Shivam Mishra, Ravi Prakash·Jul 31, 2026SaveLearn
Unitary designs from perturbed time evolutions of a chaotic HamiltonianUnitary designs provide efficient substitutes for Haar-random unitaries in quantum information processing, randomized measurements, and many-body quantum dynamics. We propose a protocol based on time…Zhongyi Yang, Biao Wu·Jul 31, 2026SaveLearn
Wigner negativity and stellar rank for SU(1,1) statesQuasiprobability distributions for systems endowed with SU(1,1) dynamical symmetry have received surprisingly little attention, despite the central role of this symmetry in two-photon physics,…A. B. Klimov, A. Muñoz, G. Leuchs et al.·Jul 31, 2026SaveLearn
Non-Invertible Symmetries Mixing with Witt Non-Trivial Quantum Cellular AutomataSelf-dualities and the stacking of symmetry-protected topological (SPT) phases are basic operations on quantum many-body systems. For a Zp one-form symmetry in 3+1d these correspond to…Kansei Inamura, Oskar Wojdel, Lukasz Fidkowski et al.·Jul 31, 2026SaveLearn
Operator-centric Clifford algebra for variational eigensolvers and finite-shot adaptive selectionWe develop a sparse operator-centric realization of n-qubit variational quantum algorithms in the complex Clifford algebra Cl(2n,C) M(2n,C). Density operators,…Ginanjar Utama, Hermawan Kresno Dipojono·Jul 31, 2026SaveLearn
Pair-Partition Constructions for CPM-Based Quantum LDPC CodesWe introduce the pair-partition (PP) construction of binary Calderbank--Shor--Steane quantum low-density parity-check codes from circulant permutation matrices. A square array of pair partitions…Koki Okada, Kenta Kasai·Jul 31, 2026SaveLearn
Matrix Product Operators In The Age of Block EncodingWe develop a block-encoding compiler that treats matrix product operators as compressed, virtual-path linear combination of unitaries programs. The compiler constructs conditional PREP and local…Eugene Dumitrescu·Jul 31, 2026SaveLearn
The bulk spectral gap is semi-decidable: a convergent family of certified upper boundsDetermining spectral gaps in the thermodynamic limit is a central challenge in quantum many-body physics. Existing rigorous methods are largely limited to special settings, while variational…Xiangling Xu, Matthias Schötz, Jie Wang et al.·Jul 31, 2026SaveLearn