Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,405 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Hybrid Quantum-AI Framework for Protein Structure Prediction on NISQ Devices
Yuqi Zhang, Yuxin Yang, Feixiong Chen +7 more·Oct 7, 2025
Variational quantum algorithms provide a direct, physics-based approach to protein structure prediction, but their accuracy is limited by the coarse resolution of the energy landscapes generated on current noisy devices. We propose a hybrid framework...
Photoswitchable radicals as reporter spins for quantum sensing with spin defects in diamond
Lakshmy Priya Ajayakumar, David J. Durden, Aksshay Nandakumar Regeni +5 more·Oct 6, 2025
The rapid decay of target signal strength with distance from the sensor presents a key challenge in nanoscale magnetic sensing with nitrogen-vacancy (NV) centers in diamond, limiting both sensitivity and spatial resolution. Here we introduce a strate...
Observation of Genuine Tripartite Non-Gaussian Entanglement from a Superconducting Three-Photon Spontaneous Parametric Down-Conversion Source
Benjamin Jarvis-Frain, Andy Schang, Fernando Quijandría +5 more·Oct 6, 2025
The generation of entangled photons through Spontaneous Parametric Down-Conversion (SPDC) is a critical resource for many key experiments and technologies in the domain of quantum optics. Historically, SPDC was limited to the generation of photon pai...
On Limits on the Provable Consequences of Quantum Pseudorandomness
Samuel Bouaziz--Ermann, Minki Hhan, Garazi Muguruza +1 more·Oct 6, 2025
There are various notions of quantum pseudorandomness, such as pseudorandom unitaries (PRUs), pseudorandom state generators (PRSGs) and pseudorandom function-like state generators (PRFSGs). Unlike classical pseudorandomness, where different notions a...
Quantum Concept Music Score from Quantum Picturalism: Musical Incarnation of a Bell-Pair under Measurements
Rakhat-Bi Abdyssagin, Bob Coecke·Oct 6, 2025
We initiate the development of a new language and theory for quantum music, to which we refer as Quantum Concept Music (QCM). This new music formalism is based on Categorical Quantum Mechanics (CQM), and more specifically, its diagrammatic incarnatio...
Levitated optomechanics with cylindrically polarized vortex beams
Felipe Almeida, Peter Barker·Oct 6, 2025
Optically levitated and cooled nanoparticles are a new quantum system whose application to the creation of non-classical states of motion and quantum limited sensing is fundamentally limited by recoil and bulk heating. We study the creation of stable...
Exact Quench Dynamics from Thermal Pure Quantum States
Hui-Huang Chen·Oct 6, 2025
We present an exact solution of entanglement entropy for the real-time dynamics following a quench from a thermal pure quantum (TPQ) state in an free fermion system. Contrast to the usual linear growth and saturate behavior, the entanglement entropy ...
A New Approach to Arguments of Quantum Knowledge
James Bartusek, Ruta Jawale, Justin Raizes +1 more·Oct 6, 2025
We construct a publicly-verifiable non-interactive zero-knowledge argument system for QMA with the following properties. 1. Transparent setup. Our protocol only requires a uniformly random string (URS) setup. The only prior publicly-verifiable NIZK f...
Overshifted Parameter-Shift Rules: Optimizing Complex Quantum Systems with Few Measurements
Leonardo Banchi, Dominic Branford, Chetan Waghela·Oct 6, 2025
Gradient-based optimization is a key ingredient of variational quantum algorithms, with applications ranging from quantum machine learning to quantum chemistry and simulation. The parameter-shift rule provides a hardware-friendly method for evaluatin...
Peaked quantum advantage using error correction
Abhinav Deshpande, Bill Fefferman, Soumik Ghosh +2 more·Oct 6, 2025
A key issue of current quantum advantage experiments is that their verification requires a full classical simulation of the ideal computation. This limits the regime in which the experiments can be verified to precisely the regime in which they are a...
Variational and field-theoretical approach to exciton-exciton interactions and biexcitons in semiconductors
Peter A. Noordman, Lucas Maisel Licerán, Henk T. C. Stoof·Oct 6, 2025
Bound electron-hole pairs in semiconductors known as excitons are the subject of intense research due to their potential for optoelectronic devices and applications, especially in the realm of two-dimensional materials. While the properties of free e...
TeMFpy: a Python library for converting fermionic mean-field states into tensor networks
Simon H. Hille, Attila Szabó·Oct 6, 2025
We introduce TeMFpy, a Python library for converting fermionic mean-field states to finite or infinite matrix product state (MPS) form. TeMFpy includes new, efficient, and easy-to-understand algorithms for both Slater determinants and Pfaffian states...
Dynamical quantum codes and logic gates on a lattice with sparse connectivity
Dominic J. Williamson, Bence Hetényi·Oct 6, 2025
We introduce several dynamical schemes that take advantage of mid-circuit measurement and nearest-neighbor gates on a lattice with maximum vertex degree three to implement topological codes and perform logic gates between them. We first review exampl...
Spin-spiral instability of the Nagaoka ferromagnet in the crossover between square and triangular lattices
Darren Pereira, Erich J. Mueller·Oct 6, 2025
We study the hard-core Fermi-Hubbard model in the crossover between square and triangular lattices near half-filling. As was recognized by Nagaoka in the 1960s, on the square lattice the presence of a single hole leads to ferromagnetic spin ordering....
Scalable accuracy gains from postselection in quantum error correcting codes
Hongkun Chen, Daohong Xu, Grace M. Sommers +3 more·Oct 6, 2025
Decoding stabilizer codes such as the surface and toric codes involves evaluating free-energy differences in a disordered statistical mechanics model, in which the randomness comes from the observed pattern of error syndromes. We study the statistica...
Fault-tolerant interfaces for modular quantum computing on diverse qubit platforms
Frederik K. Marqversen, Gefen Baranes, Maxim Sirotin +1 more·Oct 6, 2025
Modular architectures offer a scalable path toward fault-tolerant quantum computing by interconnecting smaller quantum processing units (QPUs) provided that high-rate, fault-tolerant interfaces can be realized across modules. We present a comprehensi...
Effects of intertube dipole-dipole interactions in nearly integrable one-dimensional $^{162}$Dy gases
Yicheng Zhang, Kangning Yang, Benjamin L. Lev +1 more·Oct 6, 2025
We study the effects of the intertube dipole-dipole interactions (DDI) in recent experiments with arrays of nearly integrable one-dimensional (1D) dipolar Bose gases of $^{162}$Dy atoms. An earlier theoretical modeling ignored those interactions, whi...
Self-dual bivariate bicycle codes with transversal Clifford gates
Zijian Liang, Yu-An Chen·Oct 6, 2025
Bivariate bicycle codes are promising candidates for high-threshold, low-overhead fault-tolerant quantum memories. Meanwhile, color codes are the most prominent self-dual CSS codes, supporting transversal Clifford gates that have been demonstrated ex...
Randomness from causally independent processes
Martin Sandfuchs, Carla Ferradini, Renato Renner·Oct 6, 2025
We consider a pair of causally independent processes, modelled as the tensor product of two channels, acting on a possibly correlated input to produce random outputs X and Y. We show that, assuming the processes produce a sufficient amount of randomn...
Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3 more·Oct 6, 2025
Is the usual treatment of axion dark matter as a classical field reliable? We show that the answer is subtle: the axion field could well be in a quantum state that has no complete classical description, but realistic detectors cannot tell the differe...