Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Current cross-correlation spectroscopy of Majorana bound states
Michael Ridley, Eliahu Cohen, Christian Flindt +1 more·Nov 3, 2025
The clock speed of topological quantum computers based on Majorana zero mode (MZM)-supporting nanoscale devices is limited by the time taken for electrons to traverse the device. We employ the time-dependent Landauer-B{ü}ttiker transport theory for c...
Towards Continuous-variable Quantum Neural Networks for Biomedical Imaging
Daniel Alejandro Lopez, Oscar Montiel, Oscar Castillo +1 more·Nov 3, 2025
Continuous-variable (CV) quantum computing offers a promising framework for scalable quantum machine learning, leveraging optical systems with infinite-dimensional Hilbert spaces. While discrete-variable (DV) quantum neural networks have shown remark...
Stability of mixed-state phases under weak decoherence
Yifan F. Zhang, Sarang Gopalakrishnan·Nov 3, 2025
We prove that the Gibbs states of classical, and commuting-Pauli, Hamiltonians are stable under weak local decoherence: i.e., we show that the effect of the decoherence can be locally reversed. In particular, our conclusions apply to finite-temperatu...
Non-Gaussianity and security of entanglement-based QKD
Mariia Gumberidze, Vladyslav C. Usenko·Nov 3, 2025
We theoretically analyse the relation between non-Gaussianity and security of entanglement-based quantum key distribution (QKD) protocols, namely device-independent (DI) and entanglement-based BB$84$. A similar analysis has already been made for prep...
HyperNQ: A Hypergraph Neural Network Decoder for Quantum LDPC Codes
Ameya S. Bhave, Navnil Choudhury, Kanad Basu·Nov 3, 2025
Quantum computing requires effective error correction strategies to mitigate noise and decoherence. Quantum Low-Density Parity-Check (QLDPC) codes have emerged as a promising solution for scalable Quantum Error Correction (QEC) applications by suppor...
Measurement Strategies and Estimation Precision in Quantum Network Tomography
Athira Kalavampara Raghunadhan, Matheus Guedes De Andrade, Don Towsley +3 more·Nov 3, 2025
This work investigates measurement strategies for link parameter estimation in Quantum Network Tomography (QNT), where network links are modeled as depolarizing quantum channels distributing Werner states. Three distinct measurement schemes are analy...
Non-unitary Quantum Physical Unclonable Functions: Modelling, Simulation, and Evaluation under Open Quantum Dynamics
Mohammadreza Vali, Hossein Aghababa, Nasser Yazdani·Nov 3, 2025
Physical Unclonable Functions (PUFs) provide hardware-level security by exploiting intrinsic randomness to produce device-unique responses. However, machine learning and side-channel attacks increasingly undermine their classical assumptions, calling...
Broadly tunable quantum-enhanced Raman microscopy for advancing bioimaging
Dmitrii Akatev, Yijian Meng, Jonathan Brewer +3 more·Nov 3, 2025
Stimulated Raman scattering (SRS) microscopy has emerged as a powerful technique for probing the spatiotemporal dynamics of molecular bonds with exceptional sensitivity, resolution, and speed. However, classically, its performance remains fundamental...
Entanglement estimation of Werner states with a quantum extreme learning machine
Hajar Assil, Abderrahim El Allati, Gian Luca Giorgi·Nov 3, 2025
Quantum Extreme Learning Machines (QELMs) have emerged as a potent tool for various quantum information processing tasks. We present a QELM protocol for estimating the amount of entanglement in Werner states. The protocol requires the generation of a...
In situ calibration of unitary operations during quantum error correction
Jonathan Kunjummen, Jacob M. Taylor·Nov 2, 2025
Quantum error correction uses the measurement of syndromes and classical decoding algorithms to estimate the location and type of errors while protecting the encoded quantum bits. Here we consider how prior information and Bayesian updates can play a...
ECCentric: An Empirical Analysis of Quantum Error Correction Codes
Aleksandra Świerkowska, Jannik Pflieger, Emmanouil Giortamis +1 more·Nov 2, 2025
Quantum error correction (QEC) is essential for building scalable quantum computers, but a lack of systematic, end-to-end evaluation methods makes it difficult to assess how different QEC codes perform under realistic conditions. The vast diversity o...
Enhancing Kerr-Cat Qubit Coherence with Controlled Dissipation
Francesco Adinolfi, Daniel Z. Haxell, Alessandro Bruno +4 more·Nov 2, 2025
Quantum computing crucially relies on maintaining quantum coherence for the duration of a calculation. Bosonic quantum error correction protects this coherence by encoding qubits into superpositions of noise-resilient oscillator states. In the case o...
Quantum-coherent optical isolation and circulation using frequency conversion on a chip
Jierui Hu, Hao Yuan, Joshua Akin +2 more·Nov 1, 2025
Breaking optical reciprocity enables new regimes of light--matter interaction with broad implications for fundamental physics and emerging quantum technologies. Although various approaches have been explored to achieve optical nonreciprocity, realizi...
Teleportation-based squeezer for bosonic cluster states
Michal Matulík, Radim Filip, Petr Marek·Oct 31, 2025
The one-way quantum computation utilizing bosonic modes of light offers unmatched scalability of light modes, and it has seen rapid experimental development recently. Scalability requires robust and low-error gates and measurements. Squeezing gate is...
Quantum interference effects in two-photon scattering by a macroscopic lossy sphere
A. Ciattoni·Oct 31, 2025
We investigate the quantum optical scattering of two-photon wavepackets by a macroscopic lossy sphere by means of macroscopic quantum electrodynamics in the form of modified Langevin noise formalism. The two ingoing photons with arbitrary frequency-p...
Experimental Quantum Channel Purification
Yue-Yang Fei, Zhenhuan Liu, Rui Zhang +7 more·Oct 31, 2025
Quantum networks, which integrate multiple quantum computers and the channels connecting them, are crucial for distributed quantum information processing but remain inherently susceptible to channel noise. Channel purification emerges as a promising ...
Revisiting quantum walk advantages: A mean hitting time perspective
Jan Wójcik·Oct 31, 2025
The mean squared displacement has been widely used as the primary metric for comparing quantum and classical random walks, with quantum walks showing quadratic scaling versus linear scaling for classical walks. However, this comparison may not captur...
High-Q microresonators unveil quantum rare events
Sricharan Raghavan-Chitra, Arghadip Koner, Joel Yuen-Zhou·Oct 30, 2025
Classical linear optics posits that at sufficiently low intensities, light propagation in dielectric media is governed solely by their linear susceptibilities. Here, we demonstrate a departure from this paradigm in high-Q microresonators, where prolo...
Witnessing genuine multipartite entanglement in phase space with controlled Gaussian unitaries
Lin Htoo Zaw, Jiajie Guo, Qiongyi He +2 more·Oct 30, 2025
Many existing genuine multipartite entanglement (GME) witnesses for continuous-variable (CV) quantum systems typically rely on quadrature measurements, which is challenging to implement in platforms where the CV degrees of freedom can be indirectly a...
Detection of non-Gaussian quantum correlations through measurement-after-interaction protocols
Jiajie Guo, Feng-Xiao Sun, Matteo Fadel +1 more·Oct 30, 2025
Additional state evolutions performed before measurement, also called measurement-after-interactions (MAI) protocols, have shown a great potential for increasing the sensitivity of metrological scenarios. Here, we go beyond this result and show that ...