Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Empirical Quantum Advantage in Constrained Optimization from Encoded Unitary Designs
Chinonso Onah, Roman Firt, Kristel Michielsen·Nov 18, 2025
We introduce the Constraint-Enhanced Quantum Approximate Optimization Algorithm (CE-QAOA), a shallow, constraint-aware ansatz that operates inside the one-hot product space [n]^m, where m is the number of blocks and each block is initialized in an n-...
Generating spatially separated correlated multiphoton states in nonlinear waveguide quantum electrodynamics
Jia-Qi Li, Anton Frisk Kockum, Xin Wang·Nov 18, 2025
Strongly correlated multi-photon states are indispensable resources for advanced quantum technologies, yet their deterministic generation remains challenging due to the inherent weak nonlinearity in most optical systems. Here, we propose a scalable a...
QML-HCS: A Hypercausal Quantum Machine Learning Framework for Non-Stationary Environments
Hector E Mozo·Nov 18, 2025
QML-HCS is a research-grade framework for constructing and analyzing quantum-inspired machine learning models operating under hypercausal feedback dynamics. Hypercausal refers to AI systems that leverage extended, deep, or nonlinear causal relationsh...
Many-Body Time Evolution from a Correlation-Efficient Quantum Algorithm
Michael Rose, David A. Mazziotti·Nov 17, 2025
We introduce the correlation-efficient time-evolution (CETE) algorithm for simulating quantum many-body dynamics. CETE recasts each step of time evolution as a time-independent correlation problem: the ansatz begins from a mean-field single Slater de...
Halving the Cost of Controlled Time-Evolution
William A. Simon, Peter J. Love·Nov 17, 2025
Quantum simulation is a promising application for quantum computing. Quantum simulation algorithms may require the ability to control the time evolution unitary. Naive techniques to control a unitary can substantially increase the required computatio...
Ultra Low Overhead Syndrome Extraction for the Steane code
Boldizsár Poór, Benjamin Rodatz, Aleks Kissinger·Nov 17, 2025
We establish a new performance benchmark for the fault-tolerant syndrome extraction of [[7, 1, 3]] Steane code with a dynamic protocol. Our method is built on two highly optimized circuits derived using fault-equivalent ZX-rewrites: a primary fault-t...
Qudit-native simulation of the Potts model
Maksim A. Gavreev, Evgeniy O. Kiktenko, Aleksey K. Fedorov +1 more·Nov 17, 2025
Simulating entangled, many-body quantum systems is notoriously hard, especially in the case of high-dimensional nature of physical underlying objects. In this work, we propose an approach for simulating the Potts model based on the Suzuki-Trotter dec...
Towards Quantum Software for Quantum Simulation
Maja Franz, Lukas Schmidbauer, Joshua Ammermann +2 more·Nov 17, 2025
Quantum simulation is a leading candidate for demonstrating practical quantum advantage over classical computation, as it is believed to provide exponentially more compute power than any classical system. It offers new means of studying the behaviour...
Spin-Adapted Fermionic Unitaries: From Lie Algebras to Compact Quantum Circuits
Ilias Magoulas, Francesco A. Evangelista·Nov 17, 2025
Conservation of symmetries plays a crucial role in both classical and quantum simulations of many-body systems, enabling the tracking of states with specific symmetry properties and leading to substantial reductions in the number of optimization para...
Taming Barren Plateaus in Arbitrary Parameterized Quantum Circuits without Sacrificing Expressibility
Zhenyu Chen, Yuguo Shao, Zhengwei Liu +1 more·Nov 17, 2025
Quantum algorithms based on parameterized quantum circuits (PQCs) have enabled a wide range of applications on near-term quantum devices. However, existing PQC architectures face several challenges, among which the ``barren plateaus" phenomenon is pa...
HPC-Accelerated Simulation and Calibration for Silicon Quantum Dots
Dhilan Nag, Suhun Kim, Cole Johnson +1 more·Nov 17, 2025
Quantum computers (QCs) have the potential to solve critical problems significantly faster than today's most advanced supercomputers. One major challenge in realizing this technology is designing robust electrostatic pulses to realize unitaries on qu...
Switching rates in Kerr resonator with two-photon dissipation and driving
V. Yu. Mylnikov, S. O. Potashin, M. S. Ukhtary +1 more·Nov 17, 2025
We analytically investigate the switching rate in a two-photon driven Kerr oscillator with finite detuning and two-photon dissipation. This system exhibits quantum bistability and supports a logical manifold for a bosonic qubit. Using Kramer's theory...
Depth optimization of CNOT ladder circuits
Spyros Tserkis, Muhammad Umer, Dimitris G. Angelakis·Nov 17, 2025
The increasing depth of quantum circuits presents a major limitation for the execution of quantum algorithms, as the limited coherence time of physical qubits leads to noise that manifests as errors during computation. In this work, we focus on CNOT ...
A Fractional Calculus Framework for Open Quantum Dynamics: From Liouville to Lindblad to Memory Kernels
Bo Peng, Yu Zhang·Nov 17, 2025
Open quantum systems exhibit dynamics ranging from unitary evolution to irreversible dissipation. While the Gorini--Kossakowski--Sudarshan--Lindblad (GKSL) equation uniquely characterizes Markovian CPTP evolution, many physical platforms display non-...
A Global Spacetime Optimization Approach to the Real-Space Time-Dependent Schrödinger Equation
Enze Hou, Yuzhi Liu, Linxuan Zhang +3 more·Nov 17, 2025
The time-dependent Schrödinger equation (TDSE) in real space is fundamental to understanding the dynamics of many-electron quantum systems, with applications ranging from quantum chemistry to condensed matter physics and materials science. However, s...
Fast Quantum Many Body State Synthesis
Prashasti Tiwari, Dylan Lewis, Sougato Bose·Nov 17, 2025
Quantum Mechanical ground states of many-body systems can be important resources for various investigations: for quantum sensing, as the initial state for nonequilibrium quantum dynamics following quenches, and the simulation of quantum processes tha...
Sdim: A Qudit Stabilizer Simulator
Adeeb Kabir, Steven Nguyen, Sohan Ghosh +3 more·Nov 16, 2025
Quantum computers have steadily improved over the last decade, but developing fault-tolerant quantum computing (FTQC) techniques, required for useful, universal computation remains an ongoing effort. Key elements of FTQC such as error-correcting code...
Quantum Hyperdimensional Computing: a foundational paradigm for quantum neuromorphic architectures
Fabio Cumbo, Rui-Hao Li, Bryan Raubenolt +4 more·Nov 16, 2025
A significant challenge in quantum computing (QC) is developing learning models that truly align with quantum principles, as many current approaches are complex adaptations of classical frameworks. In this work, we introduce Quantum Hyperdimensional ...
Quantum Orthogonal Separable Physics-Informed Neural Networks
Pietro Zanotta, Ljubomir Budinski, Caglar Aytekin +1 more·Nov 16, 2025
This paper introduces Quantum Orthogonal Separable Physics-Informed Neural Networks (QO-SPINNs), a novel architecture for solving Partial Differential Equations, integrating quantum computing principles to address the computational bottlenecks of cla...
Enhancing Chemistry on Quantum Computers with Fermionic Linear Optical Simulation
Zack Hassman, Oliver Reardon-Smith, Gokul Subramanian Ravi +2 more·Nov 16, 2025
We present and open source a quantum circuit simulator tailored to chemistry applications. More specifically, our simulator can compute the Born-rule probabilities of samples obtained from circuits containing passive fermionic linear optical elements...