Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Squeezing-Enhanced Photon-Number Measurements for GKP State Generation
Paul Renault, Patrick Yard, Raphael Pooser +1 more·Nov 18, 2025
We present an architecture for the generation of GKP states in which quadrature squeezing operations are used to control the average photon number statistics of probabilistic photon number measurements on Gaussian resource states. Specifically, we pr...
From Random Determinants to the Ground State
Hao Zhang, Matthew Otten·Nov 18, 2025
Accurate quantum many-body calculations often depend on reliable reference states or good human-designed ansätze, yet these sources of knowledge can become unreliable in hard problems like strongly correlated systems. We introduce the Trimmed Configu...
Quantum State Preparation with Resolution Refinement
Scott Bogner, Heiko Hergert, Morten Hjorth-Jensen +3 more·Nov 18, 2025
We introduce a method called resolution refinement that allows one to bootstrap eigenstate preparation on a quantum computer. We first prepare an eigenstate of a low-resolution Hamiltonian using any method of choice. The eigenstate is then lifted to ...
Static Laboratory-Frame Polarization of a Trapped Molecular Ion for CP-Violation Searches
Fabian Wolf·Nov 18, 2025
Today's most sensitive experiments for detecting CP-violating permanent electric dipole moments (EDM) rely on molecular spectroscopy. The high sensitivity arises from large internal electric fields that interact with the constituents of the molecule....
Pure gapped ground states of spin chains are short-range entangled
Wojciech De Roeck, Martin Fraas, Bruno de O. Carvalho·Nov 18, 2025
We consider spin chains with a finite range Hamiltonian. For reasons of simplicity, the chain is taken to be infinitely long. A ground state is said to be a unique gapped ground state if its GNS Hamiltonian has a unique ground state, separated by a g...
Multi-GPU Quantum Circuit Simulation and the Impact of Network Performance
W. Michael Brown, Anurag Ramesh, Thomas Lubinski +2 more·Nov 18, 2025
As is intrinsic to the fundamental goal of quantum computing, classical simulation of quantum algorithms is notoriously demanding in resource requirements. Nonetheless, simulation is critical to the success of the field and a requirement for algorith...
Using the Schmidt Decomposition to Determine Quantum Entanglement
Lane Boswell, Ying Cao·Nov 18, 2025
Quantum information theory is a rapidly growing area of math and physics that combines two independent theories, quantum mechanics and information theory. Quantum entanglement is a concept that was first proposed in the EPR paradox. In quantum mechan...
Divide-et-impera Heuristic-based Randomized Search for the Qubit Routing Problem
Marco Baioletti, Fabrizio Fagiolo, Angelo Oddi +1 more·Nov 18, 2025
This paper introduces the DIRSH algorithm for the Qubit Routing Problem (QRP), using a heuristic-guided randomized divide-and-conquer strategy. The method splits the circuit into chunks and optimizes each one with a stochastic selection of gates and ...
PAC global optimization for VQE in low-curvature geometric regimes
Benjamin Asch·Nov 18, 2025
We give noise-robust, Probably Approximately Correct (PAC) guarantees of global $\varepsilon$-optimality for the Variational Quantum Eigensolver under explicit geometric conditions. For periodic ansatzes with bounded generators -- yielding a globally...
Measuring Reactive-Load Impedance with Transmission-Line Resonators Beyond the Perturbative Limit
Xuanjing Chu, Jinho Park, Jesse Balgley +8 more·Nov 18, 2025
We develop an analytic framework to extract circuit parameters and loss tangent from superconducting transmission-line resonators terminated by reactive loads, extending analysis beyond the perturbative regime. The formulation yields closed-form rela...
Geometry of Generalized Density Functional Theories
Chih-Chun Wang·Nov 18, 2025
Density functional theory (DFT) is an indispensable ab initio method in both quantum chemistry and condensed matter physics. Based on recent advancements in reduced density matrix functional theory (RDMFT), a variant of DFT that is believed to be bet...
Pattern-Dependent Performance of the Bernstein-Vazirani Algorithm
Muhammad AbuGhanem·Nov 18, 2025
Quantum computers promise to redefine the boundaries of computational science, offering the potential for exponential speedups in solving complex problems across chemistry, optimization, and materials science. Yet, their practical utility remains con...
Logical Operators and Derived Automorphisms of Tile Codes
Nikolas P. Breuckmann, Shin Ho Choe, Jens Niklas Eberhardt +2 more·Nov 18, 2025
The recently introduced tile codes are a promising alternative to surface codes, combining two-dimensional locality with higher encoding efficiency. While surface codes are well understood in terms of their logical operators and boundary behavior, mu...
Gradient-descent methods for scalable quantum detector tomography
Amanuel Anteneh, Olivier Pfister·Nov 18, 2025
We present a technique for performing quantum detector tomography (QDT) of phase insensitive quantum detectors, a category under which many detectors of interest fall under, using gradient descent-based optimization to learn the positive operator-val...
The PID Controller Strikes Back: Classical Controller Helps Mitigate Barren Plateaus in Noisy Variational Quantum Circuits
Zhehao Yi, Rahul Bhadani·Nov 18, 2025
Variational quantum algorithms (VQAs) combine the advantages of classical optimization and quantum computation, making them one of the most promising approaches in the Noisy Intermediate-Scale Quantum (NISQ) era. However, when optimized using gradien...
Experimental observation and application of the genuine Quantum Mpemba Effect
Bruno P. Schnepper, Jefferson L. D. de Oliveira, Carlos H. S. Vieira +2 more·Nov 18, 2025
Coherence is an inherently quantum property that deeply affects microscopic processes, including thermalization phenomena. A striking example is the quantum Mpemba effect (QME), in which a system can exhibit anomalous relaxation, thermalizing faster ...
Genetically Engineered Quantum Circuits for Financial Market Indicators
Floyd M. Creevey, Lloyd C. L. Hollenberg·Nov 18, 2025
Quantum computing holds immense potential for transforming financial analysis and decision-making. Realising this potential necessitates the efficient encoding and processing of financial data on quantum computers. In this study, we propose using the...
Systems with Quantum Dimensions
Mikołaj Myszkowski, Mattia Damia Paciarini, Francesco Sannino·Nov 18, 2025
We propose quantum-mechanical systems in which the number of spatial dimensions is promoted to a dynamical quantum variable, making the effective dimension state-dependent. Interestingly, systems of this form can exhibit enhanced symmetries compared ...
Perturbative nonlinear J-matrix method of scattering in two dimensions
T. J. Taiwo, A. D. Alhaidari, U. Al Khawaja·Nov 18, 2025
We introduce a perturbative formulation for a nonlinear extension of the J-matrix method of scattering in two dimensions. That is, we obtain the scattering matrix for the time-independent nonlinear Schrödinger equation in two dimensions with circular...
Link prediction with swarms of chiral quantum walks
Gaia Forghieri, Viacheslav Dubovitskii, Matteo A. C. Rossi +1 more·Nov 18, 2025
Reconstructing protein-protein interaction networks is a central challenge in network medicine, often addressed using link prediction algorithms. Recent studies suggest that quantum walk-based approaches hold promise for this task. In this paper, we ...