Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tight bound for the total time in digital-analog quantum computation
Mikel Garcia-de-Andoin, Mikel Sanz·Dec 12, 2025
Digital-analog quantum computing (DAQC) is a universal computational paradigm that combines the evolution under an entangling Hamiltonian with the application of single-qubit gates. Since any unitary operation can be decomposed into a sequence of evo...
Quantum circuits for permutation matrices
Jason Hanson·Dec 12, 2025
Two different algorithms are presented for generating a quantum circuit realization of a matrix representing a permutation on $2^n$ letters. All circuits involve $n$ qubits and only use multi--controlled Toffoli gates. The first algorithm constructs ...
Distributed Quantum Magnetic Sensing for Infrastructure-free Geo-localization
Thinh Le, Shiqian Guo, Jianqing Liu·Dec 12, 2025
Modern navigation systems rely heavily on Global Navigation Satellite Systems (GNSS), whose weak spaceborne signals are vulnerable to jamming, spoofing, and line-of-sight blockage. As an alternative, the Earth's magnetic field entails location inform...
Q-BAR: Blogger Anomaly Recognition via Quantum-enhanced Manifold Learning
Maida Wang, Panyun Jiang·Dec 11, 2025
In recommendation-driven online media, creators increasingly suffer from semantic mutation, where malicious secondary edits preserve visual fidelity while altering the intended meaning. Detecting these mutations requires modeling a creator's unique s...
Andreev spin qubits bound to Josephson vortices in spin-orbit coupled planar Josephson junctions
Katharina Laubscher, Valla Fatemi, Jay D. Sau·Dec 11, 2025
We propose a variant of Andreev spin qubits (ASQs) defined in planar Josephson junctions based on spin-orbit coupled two-dimensional electron gases (2DEGs) in a weak out-of-plane magnetic field. The magnetic field induces a linear phase gradient acro...
Quantum Approaches to Urban Logistics: From Core QAOA to Clustered Scalability
F. Picariello, G. Turati, R. Antonelli +10 more·Dec 11, 2025
The Traveling Salesman Problem (TSP) is a fundamental challenge in combinatorial optimization, widely applied in logistics and transportation. As the size of TSP instances grows, traditional algorithms often struggle to produce high-quality solutions...
Tianyan: Cloud services with quantum advantage
Tianyan Quantum Group·Dec 11, 2025
Tianyan Quantum Cloud Platform offers cloud services demonstrating quantum advantage capabilities with a Zuchongzhi 3.0-like superconducting quantum processor. This cloud-accessible superconducting quantum prototype, named Tianyan-287, features 105 q...
Transpiling quantum circuits by a transformers-based algorithm
Michele Banfi, Paolo Zentilini, Sebastiano Corli +1 more·Dec 10, 2025
Transformers have gained popularity in machine learning due to their application in the field of natural language processing. They manipulate and process text efficiently, capturing long-range dependencies among data and performing the next word pred...
Graph-Based Bayesian Optimization for Quantum Circuit Architecture Search with Uncertainty Calibrated Surrogates
Prashant Kumar Choudhary, Nouhaila Innan, Muhammad Shafique +1 more·Dec 10, 2025
Quantum circuit design is a key bottleneck for practical quantum machine learning on complex, real-world data. We present an automated framework that discovers and refines variational quantum circuits (VQCs) using graph-based Bayesian optimization wi...
Two-Photon Bandwidth of Hyper-Entangled Photons in Complex Media
Ronen Shekel, Ohad Lib, Sébastien M. Popoff +1 more·Dec 10, 2025
When light propagates through complex media, its output spatial distribution is highly sensitive to its wavelength. This fundamentally limits the bandwidth of applications ranging from imaging to communication. Here, we demonstrate analytically and n...
Routes of Transport in the Path Integral Lindblad Dynamics through State-to-State Analysis
Devansh Sharma, Amartya Bose·Dec 10, 2025
Analyzing routes of transport for open quantum systems with non-equilibrium initial conditions is extremely challenging. The state-to-state approach [A. Bose, and P.L. Walters, J. Chem. Theory Comput. 2023, 19, 15, 4828-4836] has proven to be a usefu...
A Unified Framework for Optimizing Uniformly Controlled Structures in Quantum Circuits
Chengzhuo Xu, Xiao Chen, Xi Li +2 more·Dec 9, 2025
Quantum unitaries of the form $Σ_{c}\ket{c}\bra{c}\otimes U_{c}$ are ubiquitous in quantum algorithms. This class encompasses not only standard uniformly controlled gates (UCGs) but also a wide range of circuits with uniformly controlled structures. ...
Large-scale Lindblad learning from time-series data
Ewout van den Berg, Brad Mitchell, Ken Xuan Wei +1 more·Dec 9, 2025
In this work, we develop a protocol for learning a time-independent Lindblad model for operations that can be applied repeatedly on a quantum computer. The protocol is highly scalable for models with local interactions and is in principle insensitive...
Coherence-limited digital control of a superconducting qubit using a Josephson pulse generator at 3 K
M. A. Castellanos-Beltran, A. J. Sirois, L. Howe +4 more·Dec 8, 2025
Compared to traditional semiconductor control electronics (TSCE) located at room temperature, cryogenic single flux quantum (SFQ) electronics can provide qubit measurement and control alternatives that address critical issues related to scalability o...
Fast-feedback protocols for calibration and drift control in quantum computers
Alicia B. Magann, Nathan E. Miller, Robin Blume-Kohout +2 more·Dec 8, 2025
We introduce two classes of lightweight, adaptive calibration protocols for quantum computers that leverage fast feedback. The first enables shot-by-shot updates to device parameters using measurement outcomes from simple, indefinite-outcome quantum ...
Single-Operation Rydberg Phase Gates via Dynamic Population Suppression
Sebastian C. Carrasco, Jabir Chathanathil, Svetlana A. Malinovskaya +2 more·Dec 8, 2025
We propose a versatile control protocol based on modulated zero-pulse-area fields that dynamically suppresses Rydberg excitation while retaining Rydberg-Rydberg interactions as an entangling phase resource. This mechanism enables single-step, perfect...
Digital-Analog-Digital Quantum Supremacy
Daniel Lidar·Dec 8, 2025
Quantum supremacy has been explored extensively in gate-model settings. Here, we introduce a quantum-supremacy framework for a hybrid digital-analog-digital quantum computing (DADQC) model. We consider a device that applies an initial layer of single...
Virtual Qudits for Simon's Problem: Dimension-Lifted Algorithms on Qubit Hardware
Abed Semre, Steven Frankel·Dec 7, 2025
Simon's problem admits an exponential quantum speedup, but current quantum devices support only qubits. This work introduces a general construction for simulating qudit versions of Simon's algorithm on qubit hardware by defining virtual qudits implem...
Mitigating Barren plateaus in quantum denoising diffusion probabilistic models
Haipeng Cao, Kaining Zhang, Dacheng Tao +1 more·Dec 7, 2025
Quantum generative models leverage quantum superposition and entanglement to enhance learning efficiency for both classical and quantum data. The quantum denoising diffusion probabilistic model (QuDDPM), inspired by its classical counterpart, has bee...
Hybrid qubit-oscillator module with motional states of two trapped interacting atoms
Jaeyong Hwang, Tianrui Xu, Sean R. Muleady +5 more·Dec 6, 2025
We propose the use of motional states of two interacting atoms trapped in a potential stroboscopically engineered by an optical tweezer as a means to implement a qubit-oscillator system, in analogy to those implemented in circuit quantum electrodynam...