Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Phase Estimation with Compressed Controlled Time Evolution
Erenay Karacan·Nov 26, 2025
Many optimally scaling quantum simulation algorithms employ controlled time evolution of the Hamiltonian, which is typically the major bottleneck for their efficient implementation. This work establishes a compression protocol for encoding the contro...
Mirror subspace diagonalization: A quantum Krylov algorithm with near-optimal sampling cost
Shota Kanasugi, Yuya O. Nakagawa, Norifumi Matsumoto +3 more·Nov 26, 2025
Quantum Krylov algorithms have emerged as a promising approach for ground-state energy estimation in the near-term quantum computing era. A major challenge, however, lies in their inherently substantial sampling cost, primarily due to the individual ...
Compilation Pipeline for Predicting Algorithmic Break-Even in an Early-Fault-Tolerant Surface Code Architecture
Tianyi Hao, Joseph Sullivan, Sivaprasad Omanakuttan +2 more·Nov 26, 2025
Recent experimental progress in realizing surface code on hardware, including demonstrations of break-even logical memory on devices with up to hundreds of physical qubits, has materially advanced the prospects for fault-tolerant quantum computation....
Many-Body Entanglement in Solid-State Emitters
Emma Daggett, Christian M. Lange, Bennet Windt +23 more·Nov 25, 2025
The preparation and control of quantum states lie at the heart of quantum information science (QIS). Recent advances in solid-state quantum emitters (QEs) and nanophotonics have transformed the landscape of quantum photonic technologies, enabling sca...
Opportunities and Challenges of Computational Electromagnetics Methods for Superconducting Circuit Quantum Device Modeling: A Practical Review
Samuel T. Elkin, Ghazi Khan, Ebrahim Forati +5 more·Nov 25, 2025
High-fidelity numerical methods that model the physical layout of a device are essential for the design of many technologies. For methods that characterize electromagnetic effects, these numerical methods are referred to as computational electromagne...
Dynamic local single-shot checks for toric codes
Yingjia Lin, Abhinav Anand, Kenneth R. Brown·Nov 25, 2025
Quantum error correction typically requires repeated syndrome extraction due to measurement noise, which results in substantial time overhead in fault-tolerant computation. Single-shot error correction aims to suppress errors using only one round of ...
Resource assessment of classical and quantum hardware for post-quench dynamics
Joseph Vovrosh, Tiago Mendes-Santos, Hadriel Mamann +6 more·Nov 25, 2025
We estimate the run-time and energy consumption of simulating non-equilibrium dynamics on neutral atom quantum computers in analog mode, directly comparing their performance to state-of-the-art classical methods, namely Matrix Product States and Neur...
Proximity driven photon-tunneling in chiral quantum hybrid systems
Aryan Pratap Srivastava, Moulik Deviprasad Ketkar, Kuldeep Kumar Shrivastava +3 more·Nov 25, 2025
We investigate photon tunneling in a pair of coupled inverted circular split-ring microwave resonators with four discrete chiral orientations. By varying the spacing between the resonators, we observe strong modulation of the transmission spectra, in...
Disentangling Kitaev Quantum Spin Liquid
Xiang Li, Xiangjian Qian, Mingpu Qin·Nov 25, 2025
In this work, we investigate the Kitaev honeycomb model employing the recently developed Clifford Circuits Augmented Matrix Product States (CAMPS) method. While the model in the gapped phase is known to reduce to the toric code model - whose ground s...
Superconducting Parametric Amplifiers: Resonator Design and Role in Qubit Readout
Babak Mohammadian·Nov 25, 2025
Superconducting parametric amplifiers (SPAs) are critical components for ultralow-noise qubit readout in quantum computing, addressing the critical challenge of amplifying weak quantum signals without introducing noise that degrades coherence and com...
Virtual phase-covariant quantum broadcasting for qubits
Reiji Okada, Francesco Buscemi·Nov 25, 2025
Virtual maps allow the simulation of quantum operations by combining physical processes with classical post-processing. Recent work on virtual unitary covariant broadcasting has shown, however, that such maps remain impractical for observable estimat...
Error-structure-tailored early fault-tolerant quantum computing
Pei Zeng, Guo Zheng, Qian Xu +1 more·Nov 25, 2025
Fault tolerance is widely regarded as indispensable for achieving scalable and reliable quantum computing. However, the spacetime overhead required for fault-tolerant quantum computating remains prohibitively large. A critical challenge arises in man...
Hardware Acceleration of Frustrated Lattice Systems using Convolutional Restricted Boltzmann Machine
Pratik Brahma, J. Han, Tamzid Razzaque +2 more·Nov 25, 2025
Geometric frustration gives rise to emergent quantum phenomena and exotic phases of matter. While Monte Carlo methods are traditionally used to simulate such systems, their sampling efficiency is limited by the complexity of interactions and ground-s...
Localization and Delocalization of Quantum Trajectories in the Liouvillian Spectrum
Josef Richter, Masudul Haque, Lucas Sá·Nov 24, 2025
We develop an approach for understanding the dynamics of open quantum systems by analyzing individual quantum trajectories in the eigenbasis of the Liouvillian superoperator. From trajectory-eigenstate overlaps, we construct a quasiprobability distri...
Quantum Coherence of Rare-Earth Ions in Heterogeneous Photonic Interfaces
Henry C. Hammer, Hassan A. Bukhari, Yogendra Limbu +6 more·Nov 24, 2025
Harnessing rare-earth ions in oxides for quantum networks requires integration with bright emitters in III-V semiconductors, but local disorder and interfacial noise limit their optical coherence. Here, we investigate the microscopic origins of the e...
Berry's phase on photonic quantum computers
Steven Abel, Iwo Wasek, Simon Williams·Nov 24, 2025
We formulate a continuous-variable quantum computing (CVQC) algorithm to study Berry's phase on photonic quantum computers. We demonstrate that CVQC allows the simulation of charged particles with orbital angular momentum under the influence of an ad...
TorchQuantumDistributed
Oliver Knitter, Jonathan Mei, Masako Yamada +1 more·Nov 24, 2025
TorchQuantumDistributed (tqd) is a PyTorch-based [Paszke et al., 2019] library for accelerator-agnostic differentiable quantum state vector simulation at scale. This enables studying the behavior of learnable parameterized near-term and fault- tolera...
Toward end-to-end quantum simulation of rapidly distorted turbulence
Zhaoyuan Meng, Leyu Chen, Jin-Peng Liu +1 more·Nov 24, 2025
We propose an end-to-end quantum algorithm to simulate rapidly distorted turbulence via linear combination of Hamiltonian (LCHS). The algorithm comprises three primary stages: the efficient preparation of an initial turbulent state with a prescribed ...
Diagram-to-Circuit QNLP for Financial Sentiment Analysis
T. Sakuma·Nov 24, 2025
We study a \emph{QDisCoCirc}-inspired, chunked diagram-to-circuit quantum natural language processing (QNLP) model for three-class sentiment classification of financial texts. In our classical simulations, we keep the Hilbert-space dimension manageab...
An End-to-End Distributed Quantum Circuit Simulator
Sen Zhang, Lingjun Xiong, Yipie Liu +4 more·Nov 24, 2025
Quantum computing has made substantial progress in recent years; however, its scalability remains constrained on a monolithic quantum processing unit (QPU). Distributed quantum computing (DQC) offers a pathway by coordinating multiple QPUs to execute...