Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Reducing the Complexity of Matrix Multiplication to $O(N^2log_2N)$ by an Asymptotically Optimal Quantum Algorithm
Jiaqi Yao, Ding Liu·Feb 5, 2026
Matrix multiplication is a fundamental classical computing operation whose efficiency becomes a major challenge at scale, especially for machine learning applications. Quantum computing, with its inherent parallelism and exponential storage capacity,...
Quantum-Enhanced Deterministic Inference of $k$-Independent Set Instances on Neutral Atom Arrays
Juyoung Park, Junwoo Jung, Jaewook Ahn·Feb 5, 2026
Noisy quantum annealing experiments on Rydberg atom arrays produce measurement outcomes that deviate from ideal distributions, complicating performance evaluation. To enable a data-driven benchmarking methodology for quantum devices that accounts for...
High-order dynamical decoupling in the weak-coupling regime
Leeseok Kim, Milad Marvian·Feb 5, 2026
We introduce a high-order dynamical decoupling (DD) scheme for arbitrary system-bath interactions in the weak-coupling regime. Given any decoupling group $\mathcal G$ that averages the interaction to zero, our construction yields pulse sequences whos...
Gradient Analysis of Barren Plateau in Parameterized Quantum Circuits with multi-qubit gates
Yuhan Yao, Yoshihiko Hasegawa·Feb 5, 2026
The emergence of the Barren Plateau phenomenon poses a significant challenge to quantum machine learning. While most Barren Plateau analyses focus on single-qubit rotation gates, the gradient behavior of Parameterized Quantum Circuits built from mult...
Practical continuous-variable quantum key distribution using dynamic digital signal processing: security proof and experimental demonstration
Lu Fan, Zhengyu Li, Sheng Liu +8 more·Feb 5, 2026
Digital signal processing technology has paved the way for the realization of high-speed continuous-variable quantum key distribution systems. However, existing security proofs are limited to static digital signal processing algorithms, while practic...
QASMTrans: An End-to-End QASM Compilation Framework with Pulse Generation for Near-Term Quantum Devices
Aaron Hoyt, Meng Wang, Fei Hua +8 more·Feb 5, 2026
QASMTrans is a lightweight, high-performance, C++-based quantum compiler that bridges abstract quantum algorithms to device-level control and is designed for just-in-time (JIT) deployment on QPU testbeds with tightly integrated FPGAs or CPUs. We focu...
High-Level Fault-Tolerant Abstractions for Quantum-Gate Circuit Design and Synthesis: PQC and Topological Anyon Architectures (TQC) for Categorical Computations in SU(2)_3 TQFT and D-brane Stability
Vaidik A. Sharma, S. Bitragunta·Feb 5, 2026
We propose a dual-architecture quantum simulation framework for modeling morphisms and stability conditions in the bounded derived category $\mathbf{D}^b(\mathrm{Coh}(X))$, with applications to D-brane physics on K\"ahler and non-K\"ahler manifolds. ...
Dynamic Quantum Optimal Communication Topology Design for Consensus Control in Linear Multi-Agent Systems
Milad Hasanzadeh, Amin Kargarian·Feb 5, 2026
This paper proposes a quantum framework for the design of communication topologies in consensus-based multi-agent systems. The communication graph is selected online by solving a mixed-integer quadratic program (MIQP) that minimizes a cost combining ...
Photon entanglement-enhanced multidimensional spectroscopy of exciton correlations in photosynthetic aggregates
Arunangshu Debnath, Shaul Mukamel·Feb 4, 2026
Nonlinear spectroscopic techniques using entangled photon pairs can provide an opportunity to exploit non-classical correlations encoded in two-photon wavefunctions to manipulate two-exciton wavefunctions. We propose an entangled photon pair-enhanced...
Near-frustration-free electronic structure Hamiltonian representations and lower bound certificates
Nicholas C. Rubin, Guang Hao Low, A. Eugene DePrince·Feb 4, 2026
Hamiltonian representations based on the sum-of-squares (SOS) hierarchy provide rigorous lower bounds on ground-state energies and facilitate the design of efficient classical and quantum simulation algorithms. This work presents a unified framework ...
Taming multiparty entanglement at measurement-induced phase transitions
Liuke Lyu, James Allen, Yi Hong Teoh +2 more·Feb 4, 2026
Measurement-induced phase transitions (MIPT) give rise to novel dynamical states of quantum matter realized by balancing unitary evolution and measurements. We present large-scale numerical simulations of a trapped-ion native MIPT, argued to belong t...
Tighter Asymptotic Key Rates for Intensity-Correlated Decoy-State QKD via Nonlinear Programming
Matej Pivoluska, Mateus Araújo·Feb 4, 2026
Decoy-state QKD with phase-randomized weak coherent pulses is typically analyzed assuming independent, precisely prepared intensities. Real sources, however, can exhibit correlated intensity drift across rounds, potentially leaking intensity informat...
Efficient time-evolution of matrix product states using average Hamiltonians
Belal Abouraya, Jirawat Saiphet, Fedor Jelezko +1 more·Feb 4, 2026
Simulating quantum many-body systems (QMBS) is one of the long-standing, highly non-trivial challenges in condensed matter physics and quantum information due to the exponentially growing size of the system's Hilbert space. To date, tensor networks h...
Towards $2+1$D quantum electrodynamics on a cold-atom quantum simulator
Peter Majcen, Jesse J. Osborne, Philipp Hauke +3 more·Feb 4, 2026
Cold atoms have become a powerful platform for quantum-simulating lattice gauge theories in higher spatial dimensions. However, such realizations have been restricted to the lowest possible truncations of the gauge field, which limit the connections ...
Thermal State Simulation with Pauli and Majorana Propagation
Manuel S. Rudolph, Armando Angrisani, Andrew Wright +3 more·Feb 4, 2026
We introduce a propagation-based approach to thermal state simulation by adapting Pauli and Majorana propagation to imaginary-time evolution in the Schrödinger picture. Our key observation is that high-temperature states can be sparse in the Pauli or...
Requirements for Teleportation in an Intercity Quantum Network
Soubhadra Maiti, Guus Avis, Sounak Kar +1 more·Feb 4, 2026
We investigate the hardware requirements for quantum teleportation in an intercity-scale network topology consisting of two metropolitan-scale networks connected via a long-distance backbone link. Specifically, we identify the minimal improvements re...
Enabling large-scale digital quantum simulations with superconducting qubits
Laurin E. Fischer·Feb 4, 2026
Quantum computing promises to revolutionize several scientific and technological domains through fundamentally new ways of processing information. Among its most compelling applications is digital quantum simulation, where quantum computers are used ...
Pre-optimization of quantum circuits, barren plateaus and classical simulability: tensor networks to unlock the variational quantum eigensolver
Baptiste Anselme Martin, Thomas Ayral·Feb 4, 2026
Variational quantum algorithms are practical approaches to prepare ground states, but their potential for quantum advantage remains unclear. Here, we use differentiable 2D tensor networks (TN) to optimize parameterized quantum circuits that prepare t...
Does the entropy of systems with larger internal entanglement grow stronger?
Daria Gaidukevich·Feb 4, 2026
It is known that when a system interacts with its environment, the entanglement contained in the system is redistributed since parts of the system entangle with the environment. On the other hand, the entanglement of a system with its environment is ...
Escape of quantum information across an analogue black hole horizon
Zhilong Liu, Wentao Liu, Zehua Tian +1 more·Feb 4, 2026
The complete evaporation of black holes, as a natural endpoint of Hawking radiation, gives rise to the black hole information paradox, which fundamentally challenges the principles of unitarity and information conservation in quantum mechanics. Altho...