Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
A Sublinear-Time Quantum Algorithm for High-Dimensional Reaction Rates
Tyler Kharazi, Ahmad M. Alkadri, Kranthi K. Mandadapu +1 more·Jan 21, 2026
The Fokker-Planck equation models rare events across sciences, but its high-dimensional nature challenges classical computers. Quantum algorithms for such non-unitary dynamics often suffer from exponential {decay in} success probability. We introduce...
NWQWorkflow: The Northwest Quantum Workflow
Ang Li·Jan 21, 2026
This whitepaper presents NWQWorkflow, an end-to-end workflow for quantum application development, compilation, error correction, benchmarking, numerical simulation, control, and execution on a prototype superconducting testbed. NWQWorkflow integrates...
Stabilizer-Code Channel Transforms Beyond Repetition Codes for Improved Hashing Bounds
Tyler Kann, Matthieu R. Bloch, Shrinivas Kudekar +1 more·Jan 21, 2026
The quantum hashing bound guarantees that rates up to $1-H(p_I, p_X, p_Y, p_Z)$ are achievable for memoryless Pauli channels, but it is not generally tight. A known way to improve achievable rates for certain asymmetric Pauli channels is to apply a s...
Check-weight-constrained quantum codes: Bounds and examples
Lily Wang, Andy Zeyi Liu, Ray Li +2 more·Jan 21, 2026
Quantum low-density parity-check (qLDPC) codes can be implemented by measuring only low-weight checks, making them compatible with noisy quantum hardware and central to the quest to build noise-resilient quantum computers. A fundamental open question...
Dissipative Quantum Dynamics in Static Network with Different Topologies
Wei-Yang Liu, Hsuan-Wei Lee·Jan 21, 2026
We investigate the dissipative dynamics of quantum population and coherence among different network topologies of a quantum network using a quantum spin model coupled to a thermal bosonic reservoir. Our study proceeds in two parts. First, we analyze ...
Quadratic tensors as a unification of Clifford, Gaussian, and free-fermion physics
Andreas Bauer, Seth Lloyd·Jan 21, 2026
Certain families of quantum mechanical models can be described and solved efficiently on a classical computer, including qubit or qudit Clifford circuits and stabilizer codes, free-boson or free-fermion models, and certain rotor and GKP codes. We sho...
The computational two-way quantum capacity
Johannes Jakob Meyer, Jacopo Rizzo, Asad Raza +3 more·Jan 21, 2026
Quantum channel capacities are fundamental to quantum information theory. Their definition, however, does not limit the computational resources of sender and receiver. In this work, we initiate the study of computational quantum capacities. These qua...
Exactly Solvable Topological Phase Transition in a Quantum Dimer Model
Laura Shou, Jeet Shah, Matthew Lerner-Brecher +3 more·Jan 21, 2026
We consider a family of generalized Rokhsar-Kivelson (RK) Hamiltonians, which are reverse-engineered to have an arbitrary edge-weighted superposition of dimer coverings as their exact ground state at the RK point. We focus on a quantum dimer model on...
Exploring Quantumness at Long-Baseline Neutrino Experiments
Murshed Alam, Vedran Brdar, Dibya S. Chattopadhyay·Jan 21, 2026
Violations of classicality can be probed through measurements performed on a system at different times, as proposed by Leggett and Garg. Specifically, violations of Leggett-Garg inequalities suggest the presence of quantum effects in macroscopic syst...
Superluminal Transformations and Indeterminism
Amrapali Sen, Flavio Del Santo·Jan 21, 2026
Quantum theory is widely regarded as fundamentally indeterministic, yet classical frameworks can also exhibit indeterminism once infinite information is abandoned. At the same time, relativity is usually taken to forbid superluminal signalling, yet L...
QDK/Chemistry: A Modular Toolkit for Quantum Chemistry Applications
Nathan A. Baker, Brian Bilodeau, Chi Chen +23 more·Jan 21, 2026
We present QDK/Chemistry, a software toolkit for quantum chemistry workflows targeting quantum computers. The toolkit addresses a key challenge in the field: while quantum algorithms for chemistry have matured considerably, the infrastructure connect...
Precision Enhancement in Transient Quantum Thermometry:Cold-Probe Bias and Its Removal
Debarupa Saha, Ujjwal Sen·Jan 21, 2026
We unveil a temperature bias of the probe in transient quantum thermometry under Markovian dynamics. Specifically, for qubit thermometers evolving under Markovian dynamics, we show that enhanced precision beyond the steady state limit can be achieved...
Purcell enhanced electroluminescence of a unipolar light emitting quantum device at 10 micron
Marta Mastrangelo, Djamal Gacemi, Axel Evirgen +7 more·Jan 21, 2026
Efficient generation of radiation in the mid- and far- infrared relies primarily on lasers and coherent nonlinear optical phenomena driven by lasers. This wavelength range lacks of luminescent devices because the spontaneous emission rate becomes muc...
Finite de Finetti for convex bodies and Polynomial Optimization
Julius A. Zeiss, Gereon Koßmann, René Schwonnek +1 more·Jan 21, 2026
Leveraging a recently proposed notion of relative entropy in general probabilistic theories (GPT), we prove a finite de Finetti representation theorem for general convex bodies. We apply this result to address a fundamental question in polynomial opt...
A nearly linear-time Decoded Quantum Interferometry algorithm for the Optimal Polynomial Intersection problem
Ansis Rosmanis·Jan 21, 2026
Recently, Jordan et al. (Nature, 2025) introduced a novel quantum-algorithmic technique called Decoded Quantum Interferometry (DQI) for solving specific combinatorial optimization problems associated with classical codes. They presented a constraint-...
Trimer Dynamics in Floquet-driven arrays of Rydberg Atoms
Edoardo Tiburzi, Lorenzo Maffi, Luca Dell'Anna +1 more·Jan 21, 2026
We analyze the WAHUHA Floquet protocol recently applied to arrays of Rydberg atoms and derive beyond-leading-order corrections in the high-frequency expansion of the effective spin theory. We find that an appropriate choice of the pulses times can en...
Entanglement summoning from entanglement sharing
Lana Bozanic, Alex May, Stanley Miao·Jan 21, 2026
In an entanglement summoning task, a set of distributed, co-operating parties attempt to fulfill requests to prepare entanglement between distant locations. The parties share limited communication resources: timing constraints may require the entangl...
Bose condensation and Bogoliubov excitation in resonator-embedded superconducting qubit network
Patrick Navez, Valentina Di Meo, Berardo Ruggiero +12 more·Jan 21, 2026
Superconducting qubit networks (SQNs) embedded in a low-dissipative resonator is a promising device allowing one not only to establish the collective quantum dynamics on a macroscopic scale but also to greatly enhance the sensitivity of detectors of ...
Stimulated cooling in non-equilibrium Bose-Einstein condensate
Ka Kit Kelvin Ho, Vladislav Yu. Shishkov, Mohammad Amini +10 more·Jan 21, 2026
We report on the experimental observation of stimulated cooling in the non-equilibrium Bose-Einstein condensate (BEC) of weakly interacting exciton-polaritons from approximately room temperature down to 20K. By resolving the condensate in energy-mome...
Quantum-Enhanced Convergence of Physics-Informed Neural Networks
Nils Klement, Veronika Eyring, Mierk Schwabe·Jan 21, 2026
Partial differential equations (PDEs) form the backbone of simulations of many natural phenomena, for example in climate modeling, material science, and even financial markets. The application of physics-informed neural networks to accelerate the sol...