Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Fast and Sensitive Readout of a Semiconductor Quantum Dot Using an In-Situ Microwave Resonator with Enhanced Gate Lever Arm
T. Wilson, Hongwen Jiang·Oct 1, 2025
We report an experimental study of a Si/SiGe double quantum dot (DQD) directly coupled to a niobium superconducting coplanar stripline (CPS) microwave resonator. This hybrid architecture enables high-bandwidth dispersive readout suitable for real-tim...
SPAM Tolerance for Pauli Error Estimation
Ryan O'Donnell, Samvitti Sharma·Sep 30, 2025
The Pauli channel is a fundamental model of noise in quantum systems, motivating the task of Pauli error estimation. We present an algorithm that builds on the reduction to Population Recovery introduced in [FO21]. Addressing an open question from th...
Electrical Readout of Spin Environments in Diamond for Quantum Sensing
Olga Rubinas, Michael Petrov, Emilie Bourgeois +4 more·Sep 30, 2025
Nitrogen-vacancy (NV) centres in diamond are a key platform for quantum sensing and quantum information, combining long coherence times with controllable spin-spin interactions. Most of current quantum algorithms rely on optical access, which limit d...
Fundamental limits to contrast reversal of self-fidelity correlations
Kyoungho Cho, Jeongho Bang·Sep 30, 2025
In measurement design, it is common to engineer anti-contrast readouts -- two measurements that respond as differently as possible to the same inputs so that common-mode contributions are suppressed. To assess the fundamental scope of this strategy i...
Microwave-to-Optical Quantum Transduction of Photons for Quantum Interconnects
Akihiko Sekine, Ryo Murakami, Yoshiyasu Doi·Sep 30, 2025
The quantum transduction, or equivalently quantum frequency conversion, is vital for the realization of, e.g., quantum networks, distributed quantum computing, and quantum repeaters. The microwave-to-optical quantum transduction is of particular inte...
PhotonIDs: ML-Powered Photon Identification System for Dark Count Elimination
Karl C. Linne, Sho Uemura, Yue Ji +6 more·Sep 30, 2025
Reliable single photon detection is the foundation for practical quantum communication and networking. However, today's superconducting nanowire single photon detector(SNSPD) inherently fails to distinguish between genuine photon events and dark coun...
Hybrid Quantum-Classical Optimisation of Traveling Salesperson Problem
Christos Lytrosyngounis, Ioannis Lytrosyngounis·Sep 30, 2025
The Traveling Salesperson Problem (TSP), a quintessential NP-hard combinatorial optimisation challenge, is vital for logistics and network design but limited by exponential complexity in large instances. We propose a hybrid quantum-classical framewor...
AiDE-Q: Synthetic Labeled Datasets Can Enhance Learning Models for Quantum Property Estimation
Xinbiao Wang, Yuxuan Du, Zihan Lou +5 more·Sep 30, 2025
Quantum many-body problems are central to various scientific disciplines, yet their ground-state properties are intrinsically challenging to estimate. Recent advances in deep learning (DL) offer potential solutions in this field, complementing prior ...
Practical security of local local oscillator continuous-variable quantum key distribution systems with pulse width mismatch
Yi Zheng, Jiarui Wu, Chenlei Fang +3 more·Sep 30, 2025
In continuous-variable quantum key distribution (CVQKD) systems, using a local local oscillator (LLO) scheme removes the local oscillator side channel, enhances Bob's detection performance and reduces the excess noise caused by photon leakage, thereb...
Probeless vs Probe-Based Variable-Strength Eavesdropping in Quantum Key Distribution
Yuval Idan, Tal Gofman, Ziv Abelson +3 more·Sep 30, 2025
Quantum key distribution (QKD) is a provably secure way of generating a secret key, which can later be used for encoding and decoding information. In this paper we analyze the effects of an eavesdropper's variable-strength measurements on QKD. Two ty...
Ingress Cryogenic Receivers Toward Scalable Quantum Information Processing: Theory and System Analysis
Malek Succar, Mohamed I. Ibrahim·Sep 30, 2025
Current control techniques for cryogenically cooled qubits are realized with coaxial cables, posing multiple challenges in terms of cost, thermal load, size, and long-term scalability. Emerging approaches to tackle this issue include cryogenic CMOS e...
Experimental demonstration of boson sampling as a hardware accelerator for monte carlo integration
Malaquias Correa Anguita, Teun Roelink, Sara Marzban +3 more·Sep 29, 2025
We present an experimental demonstration of boson sampling as a hardware accelerator for Monte Carlo integration. Our approach leverages importance sampling to factorize an integrand into a distribution that can be sampled using quantum hardware and ...
Quantum process tomography of a compressed time evolution circuit on superconducting quantum processors
Maria Dinca, David J. Luitz, Maxime Debertolis·Sep 29, 2025
As present day quantum hardware is limited by various noise mechanisms, quantum advantage can only be reached in the near-term by designing noise-resilient quantum algorithms. In this work, we employ state-of-the-art quantum process tomography (QPT) ...
Noise mitigation in quantum enhanced fiber optic gyroscopes
Stefan Evans, Joanna Ptasinski·Sep 29, 2025
We analyze noise in a quantum-enhanced fiber optic gyroscope (FOG), focusing on one of the leading sources of phase uncertainty - uncorrelated photon saturation. Taking a squeezed state input as a source for N00N states, we compute the uncorrelated f...
Enhancing work-extraction in quantum batteries via correlated reservoirs
Sejal Ahuja, Tanoy Kanti Konar, Aditi Sen De·Sep 29, 2025
Going beyond isolated system dynamics, we examine how local and spatially correlated reservoirs influence the work extraction in quantum batteries. By employing a one-dimensional spin-1/2 model coupled to baths via dephasing and amplitude-damping noi...
Unified laboratory-frame analysis of atomic gravitational-wave sensors
Simon Schaffrath, Daniel Störk, Fabio Di Pumpo +1 more·Sep 29, 2025
Atomic sensors using light-matter interactions, in particular atomic clocks and atom interferometers, have the potential to complement optical gravitational-wave detectors in the mid-frequency regime. Although both rely on interference, the interferi...
Cryogenic pressure sensing with an ultrafast Meissner-levitated microrotor
Joel K Jose, Andrea Marchese, Marion Cromb +5 more·Sep 29, 2025
Magnetically levitated spinning rotors are key elements in important technologies such as navigation by gyroscopes, energy storage by flywheels, ultra-high vacuum generation by turbomolecular pumps, and pressure sensing for process control. However, ...
Near-Optimal Simultaneous Estimation of Quantum State Moments
Xiao Shi, Jiyu Jiang, Xian Wu +3 more·Sep 29, 2025
Estimating nonlinear properties such as Rényi entropies and observable-weighted moments serves as a central strategy for spectrum spectroscopy, which is fundamental to property prediction and analysis in quantum information science, statistical mecha...
The Quantum Decoding Problem : Tight Achievability Bounds and Application to Regev's Reduction
Agathe Blanvillain, André Chailloux, Jean-Pierre Tillich·Sep 29, 2025
We consider the quantum decoding problem. It consists in recovering a codeword given a superposition of noisy versions of this codeword. By measuring the superposition, we get back to the classical decoding problem. It appears for the first time in C...
Demonstration of quantum error detection in a silicon quantum processor
Chunhui Zhang, Chunhui Li, Zhen Tian +22 more·Sep 29, 2025
Quantum error detection is essential in realizing large-scale universal quantum computation, especially for quantum error correction (QEC). However, key elements for FTQC have yet to be realized in silicon qubits. Here, we demonstrate quantum error d...