Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
The Transfer Tensor Method: an Analytical Study Case
Marcel Morillas-Rozas, Alberto López-García, Gonzalo Reina Rivero +2 more·Mar 9, 2026
The transfer tensor method is a versatile tool for analyzing and propagating general open quantum systems. It captures in a compact manner all memory effects in a non-Markovian system through a straightforward transformation of a set of dynamical map...
Simulating non-Markovian open quantum dynamics by exploiting physics-informed neural network
Long Cao, Liwei Ge, Daochi Zhang +4 more·Mar 9, 2026
This work integrates the physics-informed neural network (PINN) approach into the neural quantum state framework to simulate open quantum system dynamics, to circumvent the computationally expensive time-dependent variational principle required in co...
Lindbladian Learning with Neural Differential Equations
Timothy Heightman, Roman Aseguinolaza Gallo, Edward Jiang +3 more·Mar 8, 2026
Inferring the dynamical generator of a many-body quantum system from measurement data is essential for the verification, calibration, and control of quantum processors. When the system is open, this task becomes considerably harder than in the purely...
Thermal and chemical response from entanglement entropy
Niko Jokela, Aatu Rajala, Tobias Rindlisbacher·Mar 8, 2026
We study entanglement entropy (EE) in interacting quantum field theories (QFTs) at finite density. We argue that, in the limit of large subregions, the derivative of EE with respect to the size of the entangling region approaches the thermal entropy ...
Optimal multiparameter quantum estimation in accelerating Unruh-DeWitt detectors
Omar Bachain, Elhabib Jaloum, Mohamed Amazioug +3 more·Mar 8, 2026
The quantum Fisher information matrix (QFIM) is central to multiparameter quantum metrology, dictating the attainable sensitivity via the quantum Cramér-Rao bound. In this work, we investigate the ultimate precision limits for relativistic quantum th...
paces: Parallelized Application of Co-Evolving Subspaces, a method for computing quantum dynamics on GPUs
R. Kevin Kessing·Mar 7, 2026
An efficient method of computing the dynamics of a pure quantum state under the time-dependent Schrödinger equation is described: At each timestep, a restricted subspace of the potentially infinite-dimensional total Hilbert space is systematically an...
Qubit Noise Sensing via Induced Photon Loss in a Superconducting Cavity
Nitzan Kahn, Dror Garti, Uri Goldblatt +3 more·Mar 6, 2026
Characterizing noise in superconducting qubits is essential for improving coherence and gate performance. Conventional noise-sensing methods typically use the qubit itself as the sensor, which limits both accessible bandwidth and applicability during...
Efficient construction of time-invariant process tensors for simulating high-dimensional non-Markovian open quantum systems
Émile Cochin, Jonathan Keeling, Brendon W. Lovett +1 more·Mar 6, 2026
Numerical methods for obtaining exact dynamics of non-Markovian open quantum systems are mostly limited to either small systems or to short-time evolution only. Here, we propose a new algorithm for computing process tensors--matrix product operator (...
Operational impact of quantum resources in chemical dynamics
Julia Liebert, Gregory D. Scholes·Mar 6, 2026
Quantum coherence and other non-classical features are widely discussed in chemical dynamics, yet it remains difficult to quantify when such resources are operationally relevant for a given process and observable. While quantum resource theories prov...
Universal Dynamical Scaling of Strong-to-Weak Spontaneous Symmetry Breaking in Open Quantum Systems
Chang Shu, Kai Zhang, Kai Sun·Mar 6, 2026
Strong-to-weak spontaneous symmetry breaking (SWSSB) defines a mixed-state phase of matter--without a pure-state counterpart--in which nonlinear observables such as the Rényi-2 correlator develop long-range order while conventional linear correlation...
Thermodynamics of Quantum Coupled Transport
Shuvadip Ghosh, Arnab Ghosh·Mar 6, 2026
This review presents a thermodynamic perspective on quantum coupled transport processes in nanoscale systems. Our analysis is formulated within the framework of entropy production rate, the central quantity governing non-equilibrium processes and exp...
Long-range mid-infrared energy transfer mediated by hyperbolic phonon polaritons
Gonzalo Álvarez-Pérez, Simone De Liberato, Huatian Hu·Mar 6, 2026
We provide a framework to theoretically describe long-range energy transfer in single and twisted two-dimensional hyperbolic slabs. We demonstrate that phonon polaritons (PhPs, quantum superpositions of photons and lattice vibrations in polar dielect...
Grand Canonical-like Thermalization of Quantum Many-body Scars
Jia-wei Wang, Xiang-Fa Zhou, Guang-Can Guo +1 more·Mar 6, 2026
Quantum many-body scar (QMBS) in kinetically constrained quantum systems challenges the conventional eigenstate thermalization hypothesis (ETH). We develop an effective open-system description for constrained dynamics and introduce the definition of ...
Heterogeneous entanglement between a trapped ion and a solid-state quantum memory
Chen-Xu Wang, Yi-Yang Wang, Tian-Xiang Zhu +11 more·Mar 6, 2026
Hybrid quantum networks offer a promising architecture for scalable quantum information processing and a future quantum internet, as they can combine the complementary strengths of disparate physical platforms. While single-atom systems provide deter...
Ansatz-Free Learning of Lindbladian Dynamics In Situ
Petr Ivashkov, Nikita Romanov, Weiyuan Gong +3 more·Mar 5, 2026
Characterizing the dynamics of open quantum systems at the level of microscopic interactions and error mechanisms is essential for calibrating quantum hardware, designing robust simulation protocols, and developing tailored error-correction methods. ...
Achieving Thresholds via Standalone Belief Propagation on Surface Codes
Pedro Hack, Luca Menti, Francisco Lazaro +1 more·Mar 5, 2026
The usual belief propagation (BP) decoders are, in general, exchanging local information on the Tanner graph of the quantum error-correcting (QEC) code and, in particular, are known to not have a threshold for the surface code. We propose novel BP de...
MQED-QD: An Open-Source Package for Quantum Dynamics Simulation in Complex Dielectric Environments
Guangming Liu, Siwei Wang, Hsing-Ta Chen·Mar 5, 2026
Simulating the dynamics of molecular excitons in complex nanophotonic environments requires integrating rigorous electromagnetic simulations with accurate treatments of open quantum system dynamics. In this work, we develop MQED-QD (Macroscopic Quant...
Computing Green's functions and improving ground state energy estimation on quantum computers with Liouvillian recursion
Jérôme Leblanc, Olivier Nahman-Lévesque, Julien Forget +3 more·Mar 5, 2026
We present a quantum-classical hybrid implementation of the Liouvillian recursion method to compute many-body Green's functions using a quantum computer. From an approximate ground state preparation circuit, this algorithm produces the local ($r=r'$)...
Robust and optimal control of open quantum systems
Zi-Jie Chen, Hongwei Huang, Lida Sun +9 more·Mar 5, 2026
Recent advancements in quantum technologies have highlighted the importance of mitigating system imperfections, including parameter uncertainties and decoherence effects, to improve the performance of experimental platforms. However, most of the prev...
Uniform process tensor approach for the calculation of multi-time correlation functions of non-Markovian open systems
Matteo Garbellini, Konrad Mickiewicz, Valentin Link +2 more·Mar 5, 2026
The process tensor framework to open quantum systems provides the most general description of multi-time correlations in non-Markovian quantum dynamics. A compressed representation of a process tensor in terms of matrix product operators (MPO) can be...