Hundred-hertz quantum circuit iteration rate in a reusable neutral-atom arrayNeutral-atom quantum processors have rapidly advanced in scale and coherence, yet their practical performance remains constrained by limited quantum circuit iteration rates (qCIRs) and information…Liang Chen, Wen-Yi Zhu, Dong-Qi Ma et al.·Aug 17, 2026SaveLearn
The preferred-time problem in the conditional interpretation of timeIn timeless formulations of quantum theory, the Page-Wootters proposal (PW) recovers time and dynamics as relative clock-and-world states. By interpreting the total timeless system as a clock…Ovidiu Cristinel Stoica·Aug 17, 2026SaveLearn
Time-optimal quantum gates with bang-bang control in multilevel systemsWe determine the optimal quantum manipulation protocols for implementing high-fidelity, fast single-qubit gates. We demonstrate that the time-optimal pulse sequence is a ``bang-bang''…Valentín Reparaz, Santiago Ferreyra, María José Sánchez et al.·Aug 17, 2026SaveLearn
Superposition of dynamics, indefinite causal order, and quantum historiesThe process-matrix formalism describes quantum processes without assuming a fixed global causal order, but the physical meaning of indefinite causal order remains open. We address this question…Charis Anastopoulos, Ntina Savvidou·Aug 17, 2026SaveLearn
Crossover from Fast Scrambling to Operator Confinement Tuned by an Auxiliary QubitWe demonstrate a static, disorder-free spin chain Hamiltonian which, by tuning the coupling to an auxiliary qubit, realizes a crossover between super-ballistic, ancilla-accelerated scrambling and…Ryan Buechele, Joseph Szabo, Nandini Trivedi·Aug 17, 2026SaveLearn
Quench Spectroscopy for Two-Dimensional Spin Models with Power-Law InteractionsIn this paper, we analytically compute the quench dynamics of simple product states that evolve under a spin-1/2 XY-model with power-law interactions in a staggered magnetic field. We use linear…Katharina Brechtelsbauer, Hans Peter Büchler·Aug 17, 2026SaveLearn
Carnot Meets Quantum Information: Thermal Machine Driven by Probabilistic Non-orthogonal State DiscriminationWhile the impossibility of perfectly identifying non-orthogonal states is a cornerstone of quantum information science, their probabilistic discrimination is nonetheless permissible. Here, we propose…Tan-Ji Zhou, Yun-Qian Lin, Yu-Han Ma et al.·Aug 17, 2026SaveLearn
On Casimir force between two real metallic platesThe corrections to Casimir pressure (force) on two plates of real metal described by the dielectric constant of the Drude, Drude-Lorentz, Drude-Smith and plasma models at the finite temperature and…Michael V. Davidovich·Aug 17, 2026SaveLearn
Discretisation of quantum feedback networks for implementation on a quantum computerQuantum Feedback Network Theory (also known colloquially as the SLH-framework) is a powerful tool for modeling systems in quantum optics. This paper describes a method for discretising SLH-networks…Luc Bouten, John Gough·Aug 17, 2026SaveLearn
Krylov complexity of anyonsAnyons obey fractional statistics that lie between bosonic and fermionic statistics, giving rise to a broad range of intriguing phenomena. However, how anyonic statistics govern quantum-state…Ya-Nan Wang, Qing-Min Hu, Wen-Long You et al.·Aug 17, 2026SaveLearn
Evidence for cavity-induced metallic phase from entropic electron correlation effectsExperiments have revealed that collective strong coupling in optical cavities can drastically alter the conductivity and dielectric properties of molecular ensembles, or even trigger abrupt phase…Jacob Horak, Dominik Sidler·Aug 17, 2026SaveLearn
Scientific applications of quantum computing: challenges and opportunitiesThe predictive simulation of molecules and materials has had a broad and significant impact. It nevertheless remains constrained by the cost of accurately treating electronic correlation, excited…Bruno Camino, C. Richard A. Catlow, John Buckeridge et al.·Aug 17, 2026SaveLearn
Casimir force between plane-layered structures: van Kampen-Schram approach for finite temperatureBased on the van Kampen-Schram method, a formula for the Casimir force between two plane-layered structures is obtained, which includes the sum of the Matsubara frequencies and a contour integral. It…Michael V. Davidovich·Aug 17, 2026SaveLearn
Imaginary Barrier, Real Transfer: Non-Hermitian Dynamical TunnellingWe identify a non-Hermitian counterpart of dynamical tunnelling induced by a localised absorbing region in a symmetric confining potential. The absorbing region, described by an imaginary potential…Eva-Maria Graefe·Aug 17, 2026SaveLearn
Quantum Permutations and Beyond Quantum Controlled Reference FramesQuantum permutations, or magic unitaries, have in recent years been explored in the context of identifying `genuinely quantum' isometries of graphs. Here, we import this tool in physics, showing…Ofek Bengyat, Časlav Brukner, Marios Christodoulou·Aug 17, 2026SaveLearn
Two-Photon Bound States in the Continuum: A No-Go Theorem and Long-Lived Quasi-Bound StatesTwo-photon bound states in the continuum provide a stringent setting in which quantum interference must suppress radiative decay despite photon--photon interactions. Here, we prove a no-go theorem…Yue Chang·Aug 17, 2026SaveLearn
Spectral filtering and crystal length as control parameters for conditional correlations in quantum imagingWe establish spectral filtering as a control parameter for the conditional momentum and position correlations of SPDC biphotons used in quantum imaging. The conditional momentum uncertainty in…Hashir Kuniyil, Asad Ali, Mohammadreza Rezaee et al.·Aug 17, 2026SaveLearn
MoMPy: automated construction of moment matrices for semidefinite programming relaxationsWe present MoMPy, an open-source Python package that provides a unified, declarative construction of moment matrices for semidefinite programming (SDP) hierarchies. The user declares operator labels…Carles Roch i Carceller·Aug 17, 2026SaveLearn
The Unidirectional Current as First Arrival-Time POVM: An MS-Kijowski Identity, Physical Interpretation, and Mathematical ApplicationsDetector-based first-arrival models and operator-based arrival-time observables provide two conceptually distinct approaches to the quantum time-of-arrival problem. Here we connect these approaches…Avi Marchewka·Aug 17, 2026SaveLearn
Quantum gate lower bounds for loss-tolerant position verificationQuantum position-verification is a cryptographic task wherein a verifier attempts to establish the location in space of a prover. Recent experiments have implemented a well-studied class of…Alex May, Philip Verduyn Lunel·Aug 17, 2026SaveLearn
Strong Converse Exponents of Quantum Soft Covering and Privacy AmplificationWe determine the exact strong converse exponent of quantum soft covering under the sandwiched Rényi divergence for all orders α∈[12,∞). For α∈[12,1), the exponent is…Shi-Bing Li, Hongsen Qiu, Xinyu Zhang·Aug 17, 2026SaveLearn
Optimal bounds on the classical value of the repeated CHSH gameWe show that the maximum winning probability in the repeated CHSH game for classical strategies is at most (1+54)n. Together with a matching lower bound by Barak et al.…Andris Ambainis·Aug 17, 2026SaveLearn
Dynamical spectral functions from bitstring-sampled quantum subspaces: entanglement, not one-body magic, tracks the sampling costSample-based quantum diagonalization (SQD) and quantum-selected configuration interaction (QSCI) are the electronic-structure methods with most hardware traction, yet their canonical target -- the…Nicolás Bonilla Vargas·Aug 17, 2026SaveLearn
Optimizing Subspace Expansion in Quantum Chemistry through Operator Selection and Reference State ChoiceThe Virtual Quantum Subspace Expansion (VQSE) extends the Variational Quantum Eigensolver (VQE) by leveraging additional measurements on the reference state to capture the influence of excluded…Konstantin Lamp, Alejandro D. Somoza, Elias Walter et al.·Aug 17, 2026SaveLearn
Negative quasiprobability trajectories for Bell-diagonal states under local decoherenceThe fluctuation theorem (FT) relates microscopic trajectory distributions to macroscopic averages. Using quasiprobability trajectories, this framework has recently been extended to quantum…Qing Yu, Kun Zhang, Yang-Yang Chen et al.·Aug 17, 2026SaveLearn