Perfect (s,r)-state transferMuch work has been done in the last two decades on the topic of quantum state transfer in a quantum spin network. One can model such a system of interacting qubits using an undirected graph, and…Stephen Kirkland, Hermie Monterde, Sarah Plosker·Sep 9, 2026SaveLearn
Demonstration of a logical Bell-state measurement beyond the linear-optical limitFault tolerance is essential for scalable quantum technologies and is enabled by quantum error-correction codes. Bell-state measurements (BSMs) are a fundamental building block for modern quantum…Shreya Kumar, Simon D. Reiß, Peter van Loock et al.·Sep 9, 2026SaveLearn
Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of MatterIn the context of the QGEM (Quantum Gravity-induced Entanglement of Masses) experiment, we consider two adjacent matter-wave interferometers in linear and parallel configurations that interact solely…Ryan Rizaldy, Helen M Sheehy, Tian Zhou et al.·Sep 9, 2026SaveLearn
Floquet Majorana XYZ Codes with Tunable Logical DynamicsWe construct Floquet codes from the Majorana XYZ subsystem code with local realizations both in qubits and directly in microscopic Majorana modes with lattice size L× L. For a three-step…Xinyu Sun, Hong Yao·Sep 9, 2026SaveLearn
Krylov Edge Spectroscopy of Symmetry-Protected Topological PhasesWe introduce Krylov edge spectroscopy, a many-body operator-space protocol for detecting and classifying one-dimensional symmetry-protected topological phases from local boundary dynamics. A…Heiko Georg Menzler, Rishabh Jha·Sep 9, 2026SaveLearn
Walking Floquet code circuits for zero-overhead leakage reductionLeakage, occurring when a qubit undetectably exits the computational subspace, poses a significant challenge for quantum error correction by inducing correlated errors in space and time. These…Hanna Westerheim, Kaavya Sahay, Shruti Puri·Sep 9, 2026SaveLearn
Conditional-squeezing gate in superconducting circuitsWe present an implementation of a conditional-squeezing gate that squeezes a SQUID-terminated resonator mode along a direction determined by the state of a dispersively coupled qubit. This gate…Roman Schiaffino, Fernando C. Lombardo, Juan Pablo Paz·Sep 9, 2026SaveLearn
A nonrecursive method for computing the off-diagonal small-time heat kernel expansionWe present a nonrecursive method to compute the small-time heat kernel asymptotic expansion. The Klein-Gordon operator in flat space-time coupled to electromagnetic fields is considered. We obtain…Vyacheslav O. Guba, Alexey V. Reznichenko·Sep 9, 2026SaveLearn
Noether Symmetries Generate Deterministic Energy-Harvesting ProtocolsWe consider the general principles for when deterministic energy harvesting (DEH) is possible. DEH means absorbing energy from a fluctuating source without entropy being absorbed. We show that the…Ali Akil, M. Hamed Mohammady, Zihan Wang et al.·Sep 9, 2026SaveLearn
Private communication via zero-private-capacity quantum channelsPrivate communication over a noisy quantum channel requires reliable transmission to the receiver and secrecy from the environment. Whether two channels with zero private capacity can jointly enable…Chengkai Zhu, Xin Wang·Sep 9, 2026SaveLearn
Optimal Low-Rank Quantum State Tomography with Bounded-Sample Joint MeasurementsWe determine the optimal sample complexity of low-rank quantum state tomography when each measurement may act jointly on at most t samples. For sufficiently small , estimating an…Ashwin Nayak, Xingyu Zhou·Sep 9, 2026SaveLearn
Phase transitions in first-detection statistics of monitored long-range quantum walksIn a quantum walk, the first-detection return probability (FDRP) characterizes salient features, determining whether the quantum walk is transient or recurrent. We study the FDRP of quantum walks on…Sayan Roy, Shamik Gupta, Giovanna Morigi et al.·Sep 9, 2026SaveLearn
Information Causality Characterizes the Set of Quantum Correlations in the Simplest Bell ScenarioInformation causality (IC) was introduced as a physical principle constraining correlations in non-signaling theories. Whether it can recover the exact quantum correlation boundary, beyond…Mariami Gachechiladze, Nikolai Miklin·Sep 9, 2026SaveLearn
Faster Quantum Monte Carlo Simulation by Random CompilationQuantum Monte Carlo (QMC) algorithms are among the most powerful classical methods for simulating quantum systems, yet their accuracy is often limited by the systematic errors in the approximations…John M. Martyn, Joshua Lin, Neill C. Warrington et al.·Sep 9, 2026SaveLearn
Symmetry structure dependent diagnostic of the Quantum Mpemba EffectUnderstanding symmetry restoration in isolated quantum many-body systems is an important problem in nonequilibrium many-body quantum physics. Recent studies have shown that the quantum Mpemba effect…Tamizhselvan S, Manju C, Bijay Kumar Agarwalla et al.·Sep 9, 2026SaveLearn
Coherent advantage in the computational expressivity of excitonic networksThe rising energy consumption of AI has generated interest in physical systems as alternative substrates for trainable computation. Recent experimental advances have enabled precise control over the…Matthew Du, Carlos Floyd, Dipti Jasrasaria et al.·Sep 9, 2026SaveLearn
Faster Computation with the Generalized Laplacian Quantum WalkQuantum walks are the quantum analogues of classical random walks or Markov chains. They are universal models of quantum computing, and they underpin a variety of quantum algorithms. We prove that a…Jonas Duda, Thomas G. Wong·Sep 9, 2026SaveLearn
Constant-depth global shadow estimationReliable and scalable readout strategies are essential for quantum technologies. As quantum processors grow, extracting useful information must remain feasible without measurement circuits becoming a…Qingyue Zhang, Zhou You, Dayue Qin et al.·Sep 9, 2026SaveLearn
Programmable photonic state fusion via heralded storage of asynchronously generated resourcesProbabilistic photonic sources generate elementary states in different trials, whereas multiphoton protocols require them to interfere in common temporal modes. We propose a fusion protocol that…Mustafa Gündoğan, Dennis Rätzel·Sep 9, 2026SaveLearn
Solving wave propagation problems via geometric quantum state preparation on dispersion manifoldsWe present a quantum algorithm for solving partial differential equations through a linear-system formulation, focusing on wave propagation problems described by the discretized Helmholtz equation in…Yakov Solomons, Lee Peleg, Netanel Barel et al.·Sep 9, 2026SaveLearn
An analysis of iterative refinement for quantum linear system solversWe present and analyze an iterative refinement (IR) framework for improving the precision dependence of algorithms that combine a quantum linear system algorithm (QLSA) with quantum state tomography.…Adrian Harkness, Mohammadhossein Mohammadisiahroudi, Brandon Augustino et al.·Sep 9, 2026SaveLearn
Information capacity of quantum statistics: Fock-state tests of a discrete binary-sequence model on cloud photonic quantum processorsOur central premise is that quantum mechanics may be the statistical limit of a more fundamental discrete theory: any such theory equips a physical system with a finite information capacity, and its…Chiran Wijesundara, Octavia T. Volpe, Dejan Stojkovic et al.·Sep 9, 2026SaveLearn
Finite-Particle Quantum Reduction of Thermodynamic IrreversibilityThermodynamics is useful because it lets us predict and control complex systems from a few accessible quantities when microscopic reconstruction is impractical. We ask whether this operational…Borhan Ahmadi·Sep 9, 2026SaveLearn
Unbounded degree overhead for Alice-conditioned quantum Bell certificatesRequiring each sum-of-squares term to involve only one of Alice's measurement questions can impose an unbounded certification cost. In the simplest Bell scenario, we prove that no finite level of…Fumin Wang·Sep 9, 2026SaveLearn
Quantum Barankin bounds beyond local unbiasedness: Analytic results for Gaussian states via a right-division frameworkWe propose a quantum version of the Barankin bound as an alternative to the quantum Cramér-Rao bound for quantum parameter estimation. The quantum Barankin bound provides a lower bound on the mean…Maximilian Reichert, Javier Navarro, Gerardo Adesso et al.·Sep 9, 2026SaveLearn