Quantum teleportation using photon-added two-mode squeezed Fock states: A comparison with photon-subtracted counterpartsQuantum state engineering frequently employs non-Gaussian operations, particularly photon addition and subtraction, to tailor and improve the nonclassical characteristics of quantum states. We…Ankita Panghal, Arpita Chatterjee·Nov 2, 2026SaveLearn
Performance analysis of cat and GKP breeding protocols with squeezed single-photon inputHomodyne breeding is a promising optical route for generating large cat states and Gottesman--Kitaev--Preskill (GKP) grid states, using readily available squeezed-cat states as inputs. We analyze the…Yoonha Kim, Jaehak Lee·Nov 2, 2026SaveLearn
Dynamical-mean-field cluster-correlation expansion of NV- spin-echo decoherence in a realistic substitutional-nitrogen bathThe Hahn-echo time T2 of nitrogen-vacancy (NV-) ensembles in nitrogen-rich diamond follows the empirical relation T2·[N] = 160 μs ppm, and this relation does not depend on the magnetic…Chikara Shinei·Nov 2, 2026SaveLearn
Logarithmic Bias of Zero-Noise Extrapolation under 1/f NoiseZero-noise extrapolation estimates ideal quantum observables by amplifying noise and extrapolating the measured response. Its accuracy depends on whether the extrapolation model captures the physical…Chenhui Wang, Weilong Wang, Haoran He et al.·Nov 2, 2026SaveLearn
Barycentric programming: Classical realization of programs for universal quantum processorsA programmable quantum processor implements a target unitary using information stored in a classical or quantum program register. For arbitrary unitaries in SU(d), quantum programs attain…Yutaka Hashimoto, Satoshi Yoshida, Mio Murao·Nov 2, 2026SaveLearn
Finite attainment and efficient computation of regularized quantum channel relative entropyQuantum channel relative entropy can be nonadditive, making its regularization essential for asymptotic analysis. We study when the regularized value is attained at finite blocklength and how…Yiwei Xu, Kun Fang·Nov 2, 2026SaveLearn
Nearly Transform-Limited Pulse-Like Temporal and Narrowband Spectral Responses in Sum-Frequency Generation from Bright Twin BeamsWe simultaneously characterize the temporal and spectral responses of the coherent component in bright twin beams using a spectrally resolved, delay-dependent sum-frequency generation (SFG)…Yujiro Eto·Nov 2, 2026SaveLearn
State Synthesis with an NP oracleIn this note, I describe a quantum algorithm that prepares an arbitrary state |ψ to inverse exponential precision in polynomial time by making queries to an NP oracle, assuming…Aniruddha Sen·Nov 2, 2026SaveLearn
Shallow data-loading circuits for multivariable functionsWe construct shallow QROM, diagonal block-encoding, and quantum state preparation oracles for analytic functions on the D-dimensional hypercube [0, 1]D. On n qubits and with 2- Ω(n/D)…Arjun Dixit, Ákos Nagy·Nov 1, 2026SaveLearn
Probing non-adiabaticity in a quantum Otto cycle through quantum texture and imaginarityFinite-time driving in quantum thermodynamic cycles inevitably generates coherences in the instantaneous energy basis, leading to quantum friction and degrading the operational performance. In this…Jonas F. G. Santos·Nov 1, 2026SaveLearn
The Reference System LoopholeI argue that the Extended Wigner's Friend theorems have a `loophole' that has previously not been appreciated, coming from the fact that we typically need a reference system to give meaning…Emily Adlam·Nov 1, 2026SaveLearn
Qubrio: High-Performance Quantum Compilation via Multi-Agent LLM CollaborationLarge Language Models (LLMs) offer an adaptable alternative to traditional quantum compilation heuristics, which bottleneck progress by demanding costly manual redesigns whenever hardware evolves.…Jixuan Ruan, Zhuo Cui, Zhengding Hu et al.·Nov 1, 2026SaveLearn
Quantum Temporal Marginal ProblemExperiments on a multi-time quantum process may reveal its responses only on selected, possibly overlapping, sets of times. We ask whether these partial descriptions admit a common underlying…Dingqian Wang, Jiayi Zhao, Ge Bai·Nov 1, 2026SaveLearn
What is the connection between quantum relationality and symmetry-based relationality?Although it has often been noted that both quantum mechanics and relativistic physics involve significant forms of relationality, the nature of the connection remains unclear. In addressing such a…Emily Adlam·Nov 1, 2026SaveLearn
From Fabrication Disorder to Quantum-Protocol Yield in Inverse-Designed Silicon Photonic Beam SplittersTelecom-band silicon spin-photon qubits offer a promising platform for scalable quantum networks and distributed information processing, but their fixed emission wavelengths require compact, low-loss…Nail Letty, Tahmeed Ul Islam, Wayesh Qarony·Nov 1, 2026SaveLearn
Sound-wave interference reveals the symmetry of a quantum transitionA single sound quantum emitted from two places interferes with itself, like a particle passing through two slits. The fringe position reveals whether the sources emit with the same sign (symmetric)…Sergei Studenikin, Yousef Karimi Yonjali, Alex Bogan et al.·Nov 1, 2026SaveLearn
Classical and Quantum Dynamics in State Space: Projective Hilbert Space, Measurement, and Classical EmergenceWe develop a geometric formulation of classical and quantum dynamics in which projective Hilbert space is taken as the primary state space and classical configuration and phase spaces arise as…Alexey A. Kryukov·Nov 1, 2026SaveLearn
Detection times are not local observables in quantum field theoryDetection times are routinely recorded in quantum experiments. We show that, under natural covariance and consistency requirements, the observables describing these times cannot be algebraically…Charis Anastopoulos, Ntina Savvidou·Nov 1, 2026SaveLearn
Interaction order sets the onset cost of steady-state quantum magicMaintaining quantum magic under continuous noise requires coherent control and a supply of purity. We determine the cost of local stabilizer replacement resets sustaining any positive stationary…Mingdi Xu·Nov 1, 2026SaveLearn
Classical and Quantum Logics with Multiple Non-Equivalent and Non-Isomorphic ModelsBoth quantum and classical logics have several mutually non-equivalent and non-isomorphic models as has repeatedly been proved in the literature. Yet, several authors have recently come with…Mladen Pavicic·Nov 1, 2026SaveLearn
Rule-based hardware-configurable static analysis for quantum programsThe rapid evolution of quantum hardware necessitates an adaptable static analysis framework for validating quantum programs. In this work, we introduce SHARP, a rule-based static analysis framework…Yi-Ting Chen, Lauren Capelluto, Ryan Shaffer et al.·Nov 1, 2026SaveLearn
Seeing Why: Exact Evidence Maps for Quantum and Optical Image ClassifiersWhen an image classifier decides, we can usually only estimate why. For quantum and all-optical classifiers that act linearly on amplitude-encoded pictures up to the measurement, with no trained…Teerawat Tongloy, Rangsan Jomtarak·Nov 1, 2026SaveLearn
Quantum Path Finder: Navigating Constraint Space via Non-Abelian Gauge DynamicsQuantum algorithms are commonly designed within the circuit paradigm or through adiabatic evolution. Here we introduce Quantum Path Finder (QPF), a distinct algorithm-design paradigm based on…Chunyin Chen, Biao Wu·Nov 1, 2026SaveLearn
Tensor Contraction with ZX Calculus, a Graph-Theoretic ApproachTensors are higher dimensional generalisations of vectors and matrices. Tensor networks are a diagrammatic representation of complicated relations between tensors, and tensor contraction is the…Yuhao Han·Nov 1, 2026SaveLearn
Long-term yields of short-rate models as Feynman-Kac ground states: a variational quantum eigensolver with single-setting energy estimation on two NISQ platformsWe show that the long-term yield of a short-rate model is the ground-state energy of a Schrodinger operator obtained from the Feynman-Kac bond-pricing equation, so that it can be computed by a…Doyeol "David" Ahn·Nov 1, 2026SaveLearn