Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Landauer cost in a continuous vacuum/no-vacuum measurement
Lorenzo Pirovano·Dec 27, 2025
We study the thermodynamic cost of maintaining a continuous binary record of a vacuum or no-vacuum measurement. Modeling the monitoring as a time-binned click or no-click process with finite bandwidth, we treat the outcomes as a classical register th...
Quantum-Circuit Framework for Two-Stage Stochastic Programming via QAOA Integrated with a Quantum Generative Neural Network
Taihei Kuroiwa, Daiki Yamazaki, Keita Takahashi +3 more·Dec 27, 2025
Two-stage stochastic programming often discretizes uncertainty into scenarios, but scenario enumeration makes expected recourse evaluation scale at least linearly in the scenario count. We propose qGAN-QAOA, a unified quantum-circuit workflow in whic...
The Lieb-Robinson correlation function for long disordered transverse-field Ising chains
Brendan J. Mahoney, Craig S. Lent·Dec 26, 2025
The transverse-field Ising model is useful for studying interacting qubit arrays. The Lieb--Robinson correlation function can be used to characterize the propagation of quantum information in Ising chains. Considerable work has been done to establish...
Symbolic Specification and Reasoning for Quantum Data and Operations
Mingsheng Ying·Dec 26, 2025
In quantum information and computation research, symbolic methods have been widely used for human specification and reasoning about quantum states and operations. At the same time, they are essential for ensuring the scalability and efficiency of aut...
Creating multicomponent Schrödinger cat states in a coupled qubit-oscillator system
Pavel Stránský, Pavel Cejnar·Dec 26, 2025
We present a method for preparing various exotic modifications of Schr{ö}dinger cat states by coupling a semiclassical oscillator to a system of qubits. Varying the number of qubits and parameters of the protocol (involving quantum quench of the coup...
Casimir Arc Plate Geometry: Computational Analysis of Thickness Constraints for Gold and Silver Nanomembranes in MEMS Applications
Anna-Maria Alexandrova, Jesus Valdiviezo·Dec 26, 2025
A theoretical analysis of the Casimir interaction between an arc and plate is conducted, which remains unexplored despite its relevance to Micro-Electro-Mechanical Systems (MEMS) fabrication. The configuration consists of a rigid finite plate and a f...
Magneto-Optical Trapping of a Metal Hydride Molecule
Jinyu Dai, Benjamin Riley, Qi Sun +2 more·Dec 26, 2025
We demonstrate a three-dimensional magneto-optical trap (MOT) of a metal hydride molecule, CaH. We are able to scatter $\sim$$10^{4}$ photons with vibrational loss covered up to vibrational quantum number $ν=2$. This allows us to laser slow the molec...
Information Critical Phases under Decoherence
Akash Vijay, Jong Yeon Lee·Dec 26, 2025
Quantum critical phases are extended regions of phase space characterized by a diverging correlation length. By analogy, we define an information critical phase as an extended region of a mixed state phase diagram where the Markov length, the charact...
Charge-Informed Quantum Error Correction
Vlad Temkin, Zack Weinstein, Ruihua Fan +2 more·Dec 26, 2025
We investigate the statistical physics of quantum error correction in ${\rm U}(1)$ symmetry-enriched topological quantum memories. Starting from a phenomenological error model of charge-conserving noise, we study the optimal decoder assuming the loca...
General Construction of Quantum Error-Correcting Codes from Multiple Classical Codes
Yue Wu, Meng-Yuan Li, Chengshu Li +1 more·Dec 26, 2025
The hypergraph product (HGP) construction of quantum error-correcting codes (QECC) offers a general and explicit method for building a QECC from two classical codes, thereby paving the way for the discovery of good quantum low-density parity-check co...
A simple realization of Weyl-Heisenberg covariant measurements
Sachin Gupta, Matthew B. Weiss·Dec 26, 2025
Informationally complete (IC) measurements are fundamental tools in quantum information processing, yet their physical implementation remains challenging. By the Naimark extension theorem, an IC measurement may be realized by a von Neumann measuremen...
Thermalization within a Stark manifold through Rydberg atom interactions
Sarah E. Spielman, Sage M. Thomas, Maja Teofilovska +8 more·Dec 26, 2025
One explanation of the thermalization of an isolated quantum system is the eigenstate thermalization hypothesis, which posits that all energy eigenstates are thermal. Based on this idea, we use dynamical typicality to predict the thermal state of ult...
Resonance matching of 2-$δ$ and 3-$δ$ potentials in 1D Quantum Scattering
Naw Sai·Dec 26, 2025
We investigate whether a 3-$δ$ system with positive coupling strengths can approximate the transmission spectrum of a 2-$δ$ resonance system with opposite-sign couplings for $k <3$. Theoretical analysis establishes exact isospectrality -- perfectly m...
Enhanced Distributed Variational Quantum Eigensolver for Large-Scale MaxCut Problem
Yuefeng Lin, Kun Wang, Qinyuan Zheng +6 more·Dec 26, 2025
MaxCut is a canonical NP-hard combinatorial optimization problem in graph theory with broad applications ranging from physics to bioinformatics. Although variational quantum algorithms offer promising new approaches that may eventually outperform cla...
Quantum Secret Sharing Rates
Gabrielle Lalou, Husein Natur, Uzi Pereg·Dec 26, 2025
This paper studies the capacity limits for quantum secret sharing (QSS). The goal of a QSS scheme is to distribute a quantum secret among multiple participants, such that only authorized parties can recover it through collaboration, while no informat...
Towards an understanding of dipole-dipole interactions in nonlocal media
L. Inácio, A. Kurumbail, S. K. Panja +2 more·Dec 26, 2025
We commence our study with review of dispersion interactions in electrolytes. We then reflect on how background media change atom-atom excited-state systems. To highlight the impact of nonlocal media, such as salt solutions, we predict that a new con...
A Fundamental Theorem on Einstein-Podolsky-Rosen Steering
Yu-Xuan Zhang, Jing-Ling Chen·Dec 26, 2025
Quantum nonlocality is an essential nonlocality resource in quantum information. It has been classified into three distinct types: quantum entanglement, Einstein-Podolsky-Rosen (EPR) steering, and Bell's nonlocality. In 1991, Gisin presented a fundam...
A Time-Symmetric Variational Reformulation of Nonrelativistic Quantum Mechanics
Lance H. Carter·Dec 26, 2025
Standard quantum mechanics relies on two distinct dynamical principles: unitary evolution and collapse. A mathematically self-contained variational framework is presented that replaces this dualism with a single principle, in which nonrelativistic Sc...
Site-Order Optimization in the Density Matrix Renormalization Group via Multi-Site Rearrangement
Ryo Watanabe, Toshiya Hikihara, Hiroshi Ueda·Dec 26, 2025
In the approaches based on matrix-product states (MPSs), such as the density-matrix renormalization group (DMRG) method, the ordering of the sites crucially affects the computational accuracy. We investigate the performance of an algorithm that searc...
Fluctuations and Irreversibility: Historical and Modern Perspectives
Sounak Bandyopadhyay, Arnab Ghosh·Dec 26, 2025
This article traces the development of fluctuation theory and its deep connection to irreversibility, from equilibrium to near-equilibrium, and finally to far-from-equilibrium systems. Classical fluctuation theorems, which capture the statistical beh...