Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Strong-to-Weak Symmetry Breaking in Open Quantum Systems: From Discrete Particles to Continuum Hydrodynamics
Jacob Hauser, Kaixiang Su, Hyunsoo Ha +6 more·Feb 17, 2026
We explore the onset of spontaneous strong-to-weak symmetry breaking (SW-SSB) under U(1)-symmetric (i.e., charge-conserving) open-system dynamics. We define this phenomenon for quantum states and classical probability distributions, and explore it in...
Limits of Clifford Disentangling in Tensor Network States
Sergi Masot-Llima, Piotr Sierant, Paolo Stornati +1 more·Feb 17, 2026
Tensor network methods leverage the limited entanglement of quantum states to efficiently simulate many-body systems. Alternatively, Clifford circuits provide a framework for handling highly entangled stabilizer states, which have low magic and are t...
Entanglement-assisted Hamiltonian dynamics learning
Ayaka Usui, Guillermo Abad-López, Hari krishnan SV +2 more·Feb 17, 2026
Approximating the dynamics given by a complex many-body Hamiltonian with a simpler effective model lies at the interface of quantum Hamiltonian learning and quantum simulation. In this context, quantum generative adversarial networks (QGANs) have bee...
QwaveMPS: An efficient open-source Python package for simulating non-Markovian waveguide-QED using matrix product states
Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes·Feb 17, 2026
QwaveMPS is an open-source Python library for simulating one-dimensional quantum many-body waveguide systems using matrix product states (MPS). It provides a user-friendly interface for constructing, evolving, and analyzing quantum states and operato...
Meta-Learning for GPU-Accelerated Quantum Many-Body Problems
Yun-Hsuan Chen, Jen-Yu Chang, Tsung-Wei Huang +1 more·Feb 17, 2026
We explore the industrial and scientific applicability of the VQE-LSTM framework by integrating meta-learning with GPU accelerated quantum simulation using NVIDIA's CUDA-Q (CUDAQ) platform. This work demonstrates how an LSTM-FC meta-initialization mo...
Magnetically assisted spin-resolved electron diffraction: Coherent control of spin population and spatial filtering
Sushanta Barman, Kuldeep Godara, Sudeep Bhattacharjee·Feb 17, 2026
Electron diffraction from nanogratings provides a platform for free-electron interferometry, yet controlled manipulation of electron spin in such geometries remains largely unexplored. In particular, the role of the self-generated magnetic field aris...
Scaling QAOA: transferring optimal adiabatic schedules from small-scale to large-scale variational circuits
Ugo Nzongani, Dylan Laplace Mermoud, Arthur Braida·Feb 16, 2026
The Quantum Approximate Optimization Algorithm (QAOA) is a leading approach for combinatorial optimization on near-term quantum devices, yet its scalability is limited by the difficulty of optimizing \(2p\) variational parameters for a large number \...
Infinite reduction in absorbing time in quantum walks over classical ones
Shuva Mondal, Amrita Mandal, Ujjwal Sen·Feb 16, 2026
We study the absorption time and spreading rate of the discrete-time quantum walk propagating on a line in the presence or absence of an absorber. We analytically establish that in the presence of an absorber, the average absorption time of the quant...
Exact Multi-Valley Envelope Function Theory of Valley Splitting in Si/SiGe Nanostructures
Lasse Ermoneit, Abel Thayil, Thomas Koprucki +1 more·Feb 16, 2026
Valley splitting in strained Si/SiGe quantum wells is a central parameter for silicon spin qubits and is commonly described with envelope-function and effective-mass theories. These models provide a computationally efficient continuum description and...
Coupled integrated photonic quantum memristors using a single photon source made of a colour center
Alessio Baldazzi, Roy Philip George Konnoth Ancel, Sebastiano Guaraldo +6 more·Feb 16, 2026
Photonic quantum memristors provide a measurement-induced route to nonlinear and history-dependent quantum dynamics. Experimental demonstrations have so far focused on isolated devices or simple cascaded devices configurations. Here, we experimentall...
NISQ-compatible quantum cryptography based on Parrondo dynamics in discrete-time quantum walks
Aditi Rath, Dinesh Kumar Panda, Colin Benjamin·Feb 16, 2026
Compatibility with noisy intermediate-scale quantum (NISQ) devices is crucial for the realistic implementation of quantum cryptographic protocols. We investigate a cryptographic scheme based on discrete-time quantum walks (DTQWs) on cyclic graphs tha...
Boundary conditions for the Schrödinger equation in the numerical simulation of quantum systems
Marco Patriarca·Feb 16, 2026
We study the problem of the boundary conditions in the numerical simulation of closed and open quantum systems, described by a Schrödinger equation. On one hand, we show that a closed quantum system is defined by local boundary conditions. On the oth...
Qute: Towards Quantum-Native Database
M. Chen, Xuanhe Zhou, Wei Zhou +7 more·Feb 16, 2026
This paper envisions a quantum database (Qute) that treats quantum computation as a first-class execution option. Unlike prior simulation-based methods that either run quantum algorithms on classical machines or adapt existing databases for quantum s...
Spacetime-Efficient and Hardware-Compatible Complex Quantum Logic Units in qLDPC Codes
Willers Yang, Jason Chadwick, Mariesa H. Teo +2 more·Feb 15, 2026
Quantum low-density parity-check (qLDPC) codes offer a promising route to scalable fault-tolerant quantum computing due to their substantially reduced footprint. However, these gains can be diluted at utility scale if we cannot also realize space-tim...
Optical transport of cold atoms to quantum degeneracy
Yanqing Tao, Yufei Wang, Ligeng Yu +1 more·Feb 15, 2026
Efficient transport of cold atoms is essential for continuous operation, enabling applications ranging from atomic lasers to continuously operated qubits. However, deep potentials required to overcome vibrations, axial trap nonuniformity and insuffic...
TensorCircuit-NG: A Universal, Composable, and Scalable Platform for Quantum Computing and Quantum Simulation
Shi-Xin Zhang, Yu-Qin Chen, Weitang Li +22 more·Feb 15, 2026
We present TensorCircuit-NG, a next-generation quantum software platform designed to bridge the gap between quantum physics, artificial intelligence, and high-performance computing. Moving beyond the scope of traditional circuit simulators, TensorCir...
Bidirectional Quantum Processor Interfacing by a 4-Kelvin Analog Signal Chain for Superconducting Qubit Control and Quantum State Readout
Deepak R, Lokendra Kanawat, Jayadeep K +1 more·Feb 15, 2026
This paper presents a comprehensive cryogenic analog signal processing architecture designed for superconducting qubit control and quantum state readout operating at 4 Kelvin. The proposed system implements a complete bidirectional signal path bridgi...
Semiclassical Simulation of Homogeneous Emitter Ensembles with Local Dissipation
Lewis Ruks·Feb 15, 2026
Emitter ensembles constitute a fundamental component in quantum optical technologies, yet efficient and accurate simulation of large ensembles remains challenging. Here, we formulate a truncated Wigner approximation (TWA) for permutation-invariant em...
Probabilistic approximate optimization using single-photon avalanche diode arrays
Ziyad Alswaidan, Abdelrahman S. Abdelrahman, Md Sakibur Sajal +9 more·Feb 15, 2026
Combinatorial optimization problems are central to science and engineering and specialized hardware from quantum annealers to classical Ising machines are being actively developed to address them. These systems typically sample from a fixed energy la...
High-Field NMR Characterization and Indirect $J$-Spectroscopy of a Nuclear Spin Chain [U-$^{13}$C,$^{15}$N]-butyronitrile
Alexey Kiryutin, Ivan Zhukov, Danil Markelov +3 more·Feb 14, 2026
One-dimensional chains of coupled spins are minimal models of strongly correlated quantum matter, and have been proposed as wires for transporting quantum information. In liquids, rapid molecular tumbling averages anisotropic dipolar couplings and le...