Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Collective three-body interactions enable a robust quantum speedup
Haoqing Zhang, Anjun Chu, Chengyi Luo +4 more·Dec 5, 2025
We show that collective three-body interactions (3BIs), implementable with $N$ atoms loaded inside an optical cavity, offer a significant advantage for preparing complex multipartite entangled states. Firstly, they enable a speedup of order $\sim N$ ...
From Mono- to Hexa-Interstitials: Computational Insights into Carbon Defects in Diamond
Nima Ghafari Cherati, Arsalan Hashemi, Ádám Gali·Dec 5, 2025
We present a comprehensive first-principles investigation of carbon self-interstitial defects in diamond, ranging from mono- to hexa-interstitial complexes. By quantum mechanical density functional theory, empowered by interatomic potential models, w...
Synergistic Computational Approaches for Accelerated Drug Discovery: Integrating Quantum Mechanics, Statistical Thermodynamics, and Quantum Computing
Farzad Molani, Art E. Cho·Dec 5, 2025
Accurately predicting protein-ligand binding free energies (BFEs) remains a central challenge in drug discovery, particularly because the most reliable methods, such as free energy perturbation (FEP), are computationally intensive and difficult to sc...
High-Performance Labyrinth Circular Bragg Grating Design for Charge and Stark-Tunable Quantum Light Sources Spanning Visible to Telecom Wavelengths
Rohit Prasad, Quirin Buchinger, Fei Chi Kristy Yuen +3 more·Dec 5, 2025
Semiconductor quantum dots embedded in circular Bragg gratings (CBGs) are among the most efficient integrated single-photon sources. However, the fully etched rings of conventional CBGs restrict the implementation of charge and Stark tuning via elect...
Entanglement transition in unitary system-bath dynamics
Bo Xing, Giuliano Chiriacò, Paola Cappellaro +2 more·Dec 5, 2025
The evolution of a system coupled to baths is commonly described by a master equation that, in the long-time limit, yields a steady-state density matrix. However, when the same evolution is unraveled into quantum trajectories, it is possible to obser...
Temporal correlations and chaos from spacetime kernel
Rathindra Nath Das, Arnab Kundu, Matheus H. Martins Costa +1 more·Dec 5, 2025
We develop a finite-dimensional formulation of the recently introduced notion of ``timelike entanglement'', defined in terms of two-point functions between operators supported on different Cauchy slices. Using a local orthonormal operator basis, we r...
The Twin Paradox in Quantum Field Theory
Matheus H. Zambianco, T. Rick Perche·Dec 5, 2025
Vacuum fluctuations in quantum field theory impose fundamental limitations on our ability to measure time in short scales. To investigate the impact of universal quantum field theory effects on observer-dependent time measurements, we introduce a clo...
RedCarD: A Quantum Assisted Algorithm for Fixed-Depth Unitary Synthesis via Cartan Decomposition
Omar Alsheikh, Efekan Kökcü, Bojko N. Bakalov +1 more·Dec 5, 2025
A critical step in developing circuits for quantum simulation is to synthesize a desired unitary operator using the circuit building blocks. Studying unitaries and their generators from the Lie algebraic perspective has given rise to several algorith...
Entanglement-Enhanced Quantum Nano-Vibrometry
Colin P. Lualdi, Joshua Rapp, Spencer J. Johnson +2 more·Dec 5, 2025
The study of dynamic systems at the nanometer scale can benefit from the loss and background resilience offered by quantum two-photon interference. However, fast measurements with the required resolution are difficult to realize. As a solution, we in...
Variational Quantum Rainbow Deep Q-Network for Optimizing Resource Allocation Problem
Truong Thanh Hung Nguyen, Truong Thinh Nguyen, Hung Cao·Dec 5, 2025
Resource allocation remains NP-hard due to combinatorial complexity. While deep reinforcement learning (DRL) methods, such as the Rainbow Deep Q-Network (DQN), improve scalability through prioritized replay and distributional heads, classical functio...
Spectroscopy and Coherent Control of Two-Level System Defect Ensembles Using a Broadband 3D Waveguide
Qianxu Wang, Juan S. Salcedo-Gallo, Salil Bedkihal +4 more·Dec 5, 2025
Defects in solid-state materials play a central role in determining coherence, stability, and performance in quantum technologies. Although narrowband techniques can probe specific resonances with high precision, a broadband spectroscopic approach ca...
Deep-Space Optical Communication Receiver Based on Single Photon Coherent Beam Combination
Antoni Mikos-Nuszkiewicz, Karol Łukanowski, Konrad Banaszek +1 more·Dec 5, 2025
We introduce an alternative receiver architecture for deep-space optical communication, in which a single large aperture is replaced by an array of smaller ones with outputs combined coherently, employing phase stabilization based on photon counting ...
Continuous operations on non-Markovian processes
Fabio Costa, Jing Yang·Dec 5, 2025
Continuous measurements are central to quantum control and sensing, yet lack a model-independent operational description that can be applied to arbitrary non-Markovian processes without specifying a microscopic measurement model. Existing multi-time ...
Lattice field theory for superconducting circuits
Joshua Lin, Max Hays, Stephen Sorokanich +3 more·Dec 5, 2025
Large superconducting quantum circuits have a number of important applications in quantum computing. Accurately predicting the performance of these devices from first principles is challenging, as it requires solving the many-body Schrödinger equatio...
Boltzmann transport theory of magnon-exciton drag
Zakhar A. Iakovlev, Akashdeep Kamra, Mikhail M. Glazov·Dec 5, 2025
We develop a microscopic theory of magnon-exciton drag effect in a bilayer van der Waals antiferromagnetic semiconductor CrSBr. Effective exciton-magnon coupling arises from an orbital mechanism: Magnons tilt the layer magnetizations, enabling charge...
Simulating non-trivial incompressible flows with a quantum lattice Boltzmann algorithm
David Jennings, Kamil Korzekwa, Matteo Lostaglio +4 more·Dec 5, 2025
Quantum algorithms have been identified as a potential means to accelerate computational fluid dynamics (CFD) simulations, with the lattice Boltzmann method (LBM) being a promising candidate for realizing quantum speedups. Here, we extend the recent ...
Asymptotic stability and ergodic properties of quantum trajectories under imperfect measurement
Nina H. Amini, Tristan Benoist, Maël Bompais +1 more·Dec 5, 2025
We investigate the asymptotic stability and ergodic properties of quantum trajectories under imperfect measurement, extending previous results established for the ideal case of perfect measurement. We establish a necessary and sufficient condition en...
Exclusive Control of Quantum Memory Erasure
Mir Alimuddin, Nathan Shettell, Raja Yehia +2 more·Dec 5, 2025
Erasing memory is a fundamental operational task in quantum information processing, governed by Landauer's principle, which links information loss to thermodynamic work. We introduce and analyze assisted quantum erasure, where correlations with a rem...
Randomness quantification in spontaneous emission
Chenxu Li, Shengfan Liu, Xiongfeng Ma·Dec 5, 2025
Quantum coherence serves as a fundamental resource for generating intrinsic randomness, yet the quantification of randomness in quantum random number generators (QRNGs) based on spontaneous emission has remained largely phenomenological. Existing ran...
Quenching dynamics of vortex in spin-orbit coupled Bose-Einstein condensates
Juan Wang, Zhenze Fan, Yan Li·Dec 5, 2025
We investigate the ground states and rich dynamics of vortices in spin-orbit coupled Bose-Einstein condensates (BEC) subject to position-dependent detuning. Such a detuning plays the role of an effective rotational frequency, causing the generation o...