Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Exponential Parallelism in Practice: A Comparative Feature on Quantum Computing and Instantaneous Noise-Based Logic
Laszlo B. Kish·Nov 16, 2025
Exponential parallelism, a defining principle of advanced computational systems, holds promise for transformative impacts across several scientific and industrial domains. This feature paper provides a comparative overview of Quantum Computing (QC) a...
An Improved Quantum Anonymous Notification Protocol for Quantum-Augmented Networks
Nitin Jha, Abhishek Parakh, Mahadevan Subramaniam·Nov 15, 2025
The scalability of current quantum networks is limited due to noisy quantum components and high implementation costs, thereby limiting the security advantages that quantum networks provide over their classical counterparts. Quantum Augmented Networks...
Scalable quantum error mitigation for dynamical decoupling
Weibin Ni, Zhijie Li, Guanyu Qu +5 more·Nov 15, 2025
Quantum coherence remains a fundamental challenge for advancing quantum technologies. Although dynamical decoupling can suppress decoherence noise, it frequently misestimates decoherence times due to control errors -- a previously underappreciated is...
Channel-Constrained Markovian Quantum Diffusion Model from Open System Perspective
Qin-Sheng Zhu, Geng Chen, Lian-Hui Yu +2 more·Nov 15, 2025
We present a channel-constrained Markovian quantum diffusion (CCMQD) model that prepares quantum states by rigorously framing the generative process within the dynamics of open quantum systems. Our model interprets the forward diffusion process as na...
Application of optical squeezing to microresonator based optical sensors
Dariya Salykina, Daniil Shakhbaziants, Igor Bilenko +1 more·Nov 15, 2025
High-Q optical microresonators combine low losses and high optical energy concentration in a small effective mode volume, making them an attractive platform for optical sensors. While light is confined in the microresonator by total internal reflecti...
Sample-based training of quantum generative models
Maria Demidik, Cenk Tüysüz, Michele Grossi +1 more·Nov 14, 2025
Quantum computers can efficiently sample from probability distributions that are believed to be classically intractable, providing a foundation for quantum generative modeling. However, practical training of such models remains challenging, as gradie...
Vector magnetometry using cavity-enhanced microwave readout in nitrogen-vacancy diamond
Reginald Wilcox, David Phillips, Matthew Steinecker +6 more·Nov 14, 2025
We demonstrate $4π$-steradian vector magnetic field sensing using an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond coupled to a microwave (MW) cavity. The MW cavity enhances the spin-photon coupling which enables efficient, hi...
Quantum limit cycles and synchronization from a measurement perspective
Tobias Nadolny, Christoph Bruder·Nov 14, 2025
Limit-cycle oscillators are the basic building blocks for synchronization; yet, the notion of a quantum limit cycle has remained unclear. Here, we study quantum limit cycles and synchronization in the presence of continuous heterodyne measurement. Th...
Unconditional and exponentially large violation of classicality
Marcello Benedetti, Gabriel Marin-Sanchez, Jordi Weggemans +2 more·Nov 14, 2025
Testing the predictions of quantum mechanics has been one of the main experimental endeavors for decades. Recent advancements in technology led to a number of demonstrations which test non-classicality via specific computational tasks. Limitations of...
Correlated Purification for Restoring $N$-Representability in Quantum Simulation
Yuchen Wang, Irma Avdic, Michael Rose +4 more·Nov 13, 2025
Classical shadow tomography offers a scalable route to estimating properties of quantum states, but the resulting reduced density matrices (RDMs) often violate constraints that ensure they represent $N$-electron states -- known as $N$-representabilit...
Understanding the Nature of Depth-1 Equivariant Quantum Circuit
Jonathan Teo, Lee Xin Wei, Hoong Chuin Lau·Nov 13, 2025
The Equivariant Quantum Circuit (EQC) for the Travelling Salesman Problem (TSP) has been shown to achieve near-optimal performance in solving small TSP problems (up to 20 nodes) using only two parameters at depth 1. However, extending EQCs to larger ...
Impacts of Decoder Latency on Utility-Scale Quantum Computer Architectures
Abdullah Khalid, Allyson Silva, Gebremedhin A. Dagnew +10 more·Nov 13, 2025
The speed of a fault-tolerant quantum computer is dictated by the reaction time of its classical electronics, that is, the total time required by decoders and controllers to determine the outcome of a logical measurement and execute subsequent condit...
Hardware-Efficient Bosonic Module for Entangling Superconducting Quantum Processors via Optical Networks
Jia-Hua Zou, Weizhou Cai, Jia-Qi Wang +7 more·Nov 13, 2025
Scaling superconducting quantum processors beyond single dilution refrigerators requires efficient optical interconnects, yet integrating microwave-to-optical (M2O) transducers poses challenges due to frequency mismatches and qubit decoherence. We pr...
Addressable fault-tolerant universal quantum gate operations for high-rate lift-connected surface codes
Josias Old, Juval Bechar, Markus Müller +1 more·Nov 13, 2025
Quantum low-density parity check (qLDPC) codes are among the leading candidates to realize error-corrected quantum memories with low qubit overhead. Potentially high encoding rates and large distance relative to their block size make them appealing f...
QuCoWE Quantum Contrastive Word Embeddings with Variational Circuits for NearTerm Quantum Devices
Rabimba Karanjai, Hemanth Hegadehalli Madhavarao, Lei Xu +1 more·Nov 13, 2025
We present QuCoWE a framework that learns quantumnative word embeddings by training shallow hardwareefficient parameterized quantum circuits PQCs with a contrastive skipgram objective Words are encoded by datareuploading circuits with controlled ring...
Provably Efficient Quantum Algorithms for Solving Nonlinear Differential Equations Using Multiple Bosonic Modes Coupled with Qubits
Yu Gan, Hirad Alipanah, Jinglei Cheng +7 more·Nov 13, 2025
Quantum computers have long been expected to efficiently solve complex classical differential equations. Most digital, fault-tolerant approaches use Carleman linearization to map nonlinear systems to linear ones and then apply quantum linear-system s...
Uncovering and Circumventing Noise in Quantum Algorithms via Metastability
Antonio Sannia, Pratik Sathe, Luis Pedro García-Pintos·Nov 12, 2025
The presence of noise is the primary challenge in realizing fault-tolerant quantum computers. In this work, we introduce and experimentally validate a novel strategy to circumvent noise by exploiting the phenomenon of metastability, where a dynamical...
Constrained Shadow Tomography for Molecular Simulation on Quantum Devices
Irma Avdic, Yuchen Wang, Michael Rose +4 more·Nov 12, 2025
Quantum state tomography is a fundamental task in quantum information science, enabling detailed characterization of correlations, entanglement, and electronic structure in quantum systems. However, its exponential measurement and computational deman...
Trotterized Variational Quantum Control for Spin-Chain State Transfer
Nahid Binandeh Dehaghani, Rafal Wisniewski, A. Pedro Aguiar·Nov 12, 2025
We present a hybrid variational framework for quantum optimal control aimed at high-fidelity state transfer in spin chains. The system dynamics are discretized and compiled into a parameterized circuit, where deterministic two-qubit blocks implement ...
Adaptive Estimation of Drifting Noise in Quantum Error Correction
Devansh Bhardwaj, Evangelia Takou, Yingjia Lin +1 more·Nov 12, 2025
Advancing quantum information processors and building fault-tolerant architectures rely on the ability to accurately characterize the noise sources and suppress their impact on quantum devices. In practice, noise often drifts over time, whereas conve...