Localizing quantum informationThe idea that information can be localized is pervasive in physics. In thermodynamics, entropy flows from one reservoir to another, and in quantum gravity, the entropy content of some spatial regions…Fahimeh Bayeh, Andre Kornell·Sep 2, 2026SaveLearn
Imaginarity witnessing enhancement via spectral norms of witnessesQuantum imaginarity is an essential physical resource that underpins key functionalities of modern quantum technologies. We improve imaginarity witnessing via the prior knowledge of…Yuhang Xie, Yanjun Chu, Yushan Ding et al.·Sep 2, 2026SaveLearn
Exact diffusion coefficients for quantum--classical hybrid walksOne-dimensional quantum--classical hybrid walks are introduced by combining quantum and classical steps under periodic and random protocols. Exact diffusion coefficients are derived for both…Cook Hyun Kim, Jaesub Park, Namshik Han·Sep 1, 2026SaveLearn
Quantum Circuit and Tensor Network Implementation of the 2D Acoustic Wave EquationWe present a cohesive framework for simulating seismic wave propagation utilizing quantum computing paradigms and their classical tensor network equivalents. We detail a quantum circuit-based…Tamas Nemeth, Gabor Vattay·Sep 1, 2026SaveLearn
Need One Bell-pair Only (NOBOL) for Low-Overhead Fault-Tolerant Quantum ComputingFault-tolerant quantum computation fundamentally relies on encoding a logical qubit into a structured block of physical qubits, typically in the tens to hundreds. As a trade-off for improved…Sean Grzenda, Shahram Babaie, Chunming Qiao·Sep 1, 2026SaveLearn
Gouy Phase across PT-Symmetry Breaking in Non-Hermitian Dirac SystemsWe study relativistic beam-like wave packets governed by a quasi-Hermitian massive Dirac Hamiltonian and uncover anomalous Gouy-phase behavior in non-Hermitian dynamics. We show that the Gouy phase…Dirlan J. C. de Morais Sousa, Lucas S. Marinho, Giandomenico Palumbo et al.·Sep 1, 2026SaveLearn
Error accumulation in dissipative quantum circuitsPresent-day quantum processors are open systems in which dissipation and decoherence degrade the information carried by a quantum state as it propagates through a circuit. We study this degradation…Nadir Samos-Sáenz de Buruaga, Rodrigo M. C. Pereira, Karol Życzkowski et al.·Sep 1, 2026SaveLearn
Bosonic quantum control with a weakly coupled fluxonium qubitEchoed Conditional Displacement (ECD) gates constitute a fundamental building block for quantum control of harmonic oscillator modes. However, bit-flips of the auxiliary qubit remain a dominant error…Anaida Ali, Shantanu R. Jha, Shoumik D. Chowdhury et al.·Sep 1, 2026SaveLearn
Quantum Representation Learning Beyond Pairwise FidelityQuantum contrastive, metric, and self-supervised learning often expose encoded quantum states to the learner through transition probabilities, especially fidelity. Quantum states are known to possess…Junpeng Hou, Changbin Lu·Sep 1, 2026SaveLearn
GadIR: A Spatial-Topology Preserving Compiler for Quantum Many-Body Systems SimulationSimulating quantum many-body systems has been one of the most important applications of quantum computation. For simulation, the Hamiltonian of a physical system is compiled into quantum programs…Xiangyu Ren, Yuexun Huang, Zhaohui Yang et al.·Sep 1, 2026SaveLearn
N-bein formalism for degenerate states in the parameter space of quantum geometryRecently, we introduced a geometric object analogous to an orthonormal frame in the Cartan formalism to study the parameter space of quantum systems; we called it N-bein, with…Jorge Romero, Carlos A Velasquez, J David Vergara·Sep 1, 2026SaveLearn
Reliable Sample-Level Quantum Error Mitigation via Dominance-Aware ClusteringMany quantum algorithms for classically difficult optimization tasks must return high-quality bitstrings from finitely many circuit executions, whereas most quantum error-mitigation methods target…Mohsen Ghodrati, Kausthubh Chandramouli, Dror Baron·Sep 1, 2026SaveLearn
Non-Markovian interactions with pulses of quantum radiationThe interaction of a traveling pulse of quantum light with a localized quantum system shows non-Markovian features when scattering takes place in a structured environment. Here, we devise a…Julien Pinske, Stefan Scheel·Sep 1, 2026SaveLearn
Bilinear correlations in Fluctuating Gaussian States with anti-unitary symmetriesWe study bilinear order-parameter correlations in a general class of sign problem-free systems that are described by what we call Fluctuating Gaussian States (FGS) with anti-unitary symmetries, where…Xu Zhang·Sep 1, 2026SaveLearn
Numerical simulation of D-Wave's quantum advantage experiment with time-dependent variational Monte CarloProgrammable quantum annealers can realize real-time dynamics of frustrated transverse-field Ising models on large, nontrivial graphs. Recent work by King et al. argued that the classical simulation…Roeland Wiersema·Sep 1, 2026SaveLearn
Purification of photonic graph statesGraph states constitute the main building block for quantum computing with photons. Quantum emitters with a hosted spin can deterministically generate photonic graph states, strongly lowering the…Matthias C. Löbl, Aliki A. Capatos, Ming Lai Chan et al.·Sep 1, 2026SaveLearn
Tunneling assisted interference in double-well levitodynamicsLevitated particles trapped in double-well potentials provide a promising platform for exploring quantum dynamics beyond the harmonic regime. We show that such systems exhibit a distinctive quantum…Yue Ma, Endre Bokor, M. S. Kim·Sep 1, 2026SaveLearn
Comment on "Environmental memory effects and quantum resource hierarchies in polarized hyperon--antihyperon systems"We comment on the recent work [Eur. Phys. J. C 86, 988 (2026)], which investigates quantum resources in polarized hyperon--antihyperon systems using correlated dephasing channels with memory.…Saeed Haddadi·Sep 1, 2026SaveLearn
Observable- and state-selective prethermalization and bounds on prethermal lifetimesPrethermalization describes long-lived intermediate regimes that precede equilibrium and can dominate experimentally accessible dynamics. Here, we show that a separation of spectral energy scales,…C. L. Sriram, Soumya Kanti Pal, Lea F. Santos·Sep 1, 2026SaveLearn
Depth-1 expanders on the unitary group and applicationsWe construct a constant-degree and constant-gap quantum expander on n qubits where each unitary can be implemented by a depth-1 and 1D circuit of Pauli or CNOT gates. We provide two applications…Anurag Anshu, Shankar Balasubramanian, Jonas Haferkamp et al.·Sep 1, 2026SaveLearn
Irreducibility and regularisation properties of Gaussian quantum Markov semigroupsWe study regularisation and irreducibility properties of Gaussian quantum Markov semigroups (GQMSs) acting on continuous-variable quantum systems. We first identify a natural notion of regularity for…Franco Fagnola, Federico Girotti·Sep 1, 2026SaveLearn
Quantum Weighted Moving Average for Predicting Limit Order Book TrendsCan quantum computers be useful for forecasting multivariate financial time series? In this work, we consider the problem of predicting price trends from limit order book (LOB) data. After…Matthias Kamm, Dinh-Long Vu, Patrick Rebentrost·Sep 1, 2026SaveLearn
Verifiable quantum advantage in extremely low depthWe give a sampling problem that is solvable by shallow quantum circuits, hard for polynomial-time classical algorithms under lattice-based assumptions, and efficiently verifiable by a classical…Alexandru Gheorghiu·Sep 1, 2026SaveLearn
Exact Virtual Channel Programming with Vanishing Excess OverheadA finite-dimensional physical processor cannot exactly program a continuous family of distinct unitary channels. We show that this obstruction becomes quantitative when the target channel is stored…Mingrui Jing, Mengbo Guo, Hongshun Yao et al.·Sep 1, 2026SaveLearn
Local Gaussian bounds on the non-destructive discrimination of two-mode squeezed statesTypical measurement setups in quantum systems are destructive, meaning that states are irretrievably altered after measurement. In this work, we analyse non-destructive discrimination of two two-mode…Mi-Jung So, James Moran, Youngrong Lim et al.·Sep 1, 2026SaveLearn