Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A unified quantum computing quantum Monte Carlo framework through structured state preparation
Giuseppe Buonaiuto, Antonio Marquez Romero, Brian Coyle +4 more·Mar 26, 2026
We extend Quantum Computing Quantum Monte Carlo (QCQMC) beyond ground-state energy estimation by systematically constructing the quantum circuits used for state preparation. Replacing the original Variational Quantum Eigensolver (VQE) prescription wi...
Stochastic Multipath Routing for High-Throughput Entanglement Distribution in Quantum Repeater Networks
Ankit Mishra, Kang Hao Cheong·Mar 26, 2026
Quantum repeater networks distribute entanglement over lossy links while many users share a limited pool of entangled pairs. Most existing routing schemes either always use a single best path or rely on global optimizations that are hard to run in re...
Adaptive Negativity Estimation via Collective Measurements
Martin Zeman, Vojtěch Trávníček, Antonín Černoch +2 more·Mar 26, 2026
This paper explores an efficient method for entanglement quantification in two-qubit and qubit-qutrit quantum systems based upon the framework of collective measurements in conjunction with machine learning. We introduce an adaptive measurement proce...
Rotatable Antenna-Empowered Wireless Networks: A Tutorial
Beixiong Zheng, Qingjie Wu, Xue Xiong +10 more·Mar 26, 2026
Non-fixed flexible antenna architectures, such as fluid antenna system (FAS), movable antenna (MA), and pinching antenna, have garnered significant interest in recent years. Among them, rotatable antenna (RA) has emerged as a promising technology for...
Kardashev scale Quantum Computing for Bitcoin Mining
Pierre-Luc Dallaire-Demers, BTQ Technologies Team·Mar 26, 2026
Bitcoin already faces a quantum threat through Shor attacks on elliptic-curve signatures. This paper isolates the other component that public discussion often conflates with it: mining. Grover's algorithm halves the exponent of brute-force search, pr...
Nonperturbative Resummation of Divergent Time-Local Generators
Dragomir Davidovic·Mar 26, 2026
Time-local generators of open quantum systems are generically divergent at long times, even though the reduced dynamics remains regular. We construct, by analytic continuation, nonperturbative dynamical maps consistent with these generators. For the ...
Implementing Bell causality in Quantum Sequential Growth
Ritesh Srivastava, Sumati Surya·Mar 26, 2026
We explore different implementations of the quantum Bell causality (QBC) condition in the quantum sequential growth (QSG) dynamics of causal set quantum gravity, for non-commuting transition operators. Assuming a non-singular dynamics we show that fo...
Send the Key in Cleartext: Halving Key Consumption while Preserving Unconditional Security in QKD Authentication
Claudia De Lazzari, Francesco Stocco, Edoardo Signorini +7 more·Mar 26, 2026
Quantum Key Distribution (QKD) protocols require Information-Theoretically Secure (ITS) authentication of the classical channel to preserve the unconditional security of the distilled key. Standard ITS schemes are based on one-time keys: once a key i...
Lattice and PT symmetries in tensor-network renormalization group: a case study of a hard-square lattice gas model
Xinliang Lyu·Mar 26, 2026
The tensor-network renormalization group (TNRG) is an accurate numerical real-space renormalization group method for studying phase transitions in both quantum and classical systems. Continuous phase transitions, as an important class of phase transi...
Networks of quantum reference frames and the nature of conserved quantities
Daniel Collins, Carolina Moreira Ferrera, Ismael L. Paiva +1 more·Mar 26, 2026
We show that networks of quantum frames of reference, in which one frame may be used to produce multiple other frames that in their turn prepare systems which may interact with one another, have counterintuitive properties that make following the exc...
Maximizing Qubit Throughput under Buffer Decoherence and Variability in Generation
Padma Priyanka, Avhishek Chatterjee, Sheetal Kalyani·Mar 26, 2026
Quantum communication networks require transmission of high-fidelity, uncoded qubits for applications such as entanglement distribution and quantum key distribution. However, current implementations are constrained by limited buffer capacity and qubi...
Mass-correction-induced enhancement of quantum correlations even beyond entanglement in the $e^{+}e^{-} \rightarrow J/ψ\rightarrow Λ(pπ^{-}) \barΛ(\bar{p}π^{+})$ process at the BESIII experiment under memory effects
Elhabib Jaloum, Omar Bachain, Mohamed Amazioug +4 more·Mar 26, 2026
In this work, we derive the bipartite density matrix for the $e^{+}e^{-} \rightarrow J/ψ\rightarrow Λ(pπ^{-}) \barΛ(\bar{p}π^{+})$ process at BESIII. We evaluate the impact of mass corrections and memory effects (within Markovian and non-Markovian re...
Exceptional-point-constrained locking of boundary-sensitive topological transitions in non-Hermitian lattices
Huimin Wang, Yanxin Liu, Zhijian Li +1 more·Mar 26, 2026
Topological transitions in non-Hermitian systems are generally boundary sensitive: point-gap topology under periodic boundary conditions and line-gap topology under open boundary conditions need not coincide because of non-Bloch spectral deformation ...
Tensor network methods for bound electron-hole complexes beyond strong and weak confinement in nanoplatelets
Bruno Hausmann, Marten Richter·Mar 26, 2026
In semiconductor nanostructures, optical excitation typically creates bound electron-hole states, such as excitons, trions, and larger complexes. Their relative motion is described by the Wannier equation, which is valid only for spatially extended m...
On the integrability structure of the deformed rule-54 reversible cellular automaton
Chiara Paletta, Tomaž Prosen·Mar 26, 2026
We study quantum and stochastic deformations of the rule-54 reversible cellular automaton (RCA54) on a 1+1-dimensional spatiotemporal lattice, focusing on their integrability structures in two distinct settings. First, for the quantum deformation, wh...
A counterexample to the strong spin alignment conjecture
Zhiwei Song, Lin Chen·Mar 26, 2026
The spin alignment conjecture was originally formulated in connection with the additivity of coherent information for a class of quantum channels known as platypus channels. Recently, a stronger majorization-based version was proposed by M. A. Alhejj...
From Complementarity to Quantum Properties: An Operational Reconstructive Approach
Philip Goyal·Mar 26, 2026
Quantum theory brings into question the compatibility of the twin desiderata of exact knowability of the present state of the physical world and perfect predictability of its future states. Bohr's coordination-causality complementarity principle tran...
Resurgence Theory and Holomorphic Quantum Mechanics
M. W. AlMasri·Mar 26, 2026
In this work, we study the resurgence program in holomorphic quantum mechanics. As a specific problem, we investigate the resurgence in the quartic anharmonic oscillator within holomorphic quantum mechanics, using the Bargmann representation of boson...
Quantum Finite Temperature Lanczos Method
Gian Gentinetta, Friederike Metz, William Kirby +1 more·Mar 26, 2026
The computation of thermal properties of quantum many-body systems is a central challenge in our understanding of quantum mechanics. We introduce the Quantum Finite Temperature Lanczos Method (QFTLM), which extends the finite-temperature Lanczos meth...
A derivation of the late-time volume law for local operator entanglement
Guilherme Ilário Correr, John Goold, Marco Cattaneo·Mar 26, 2026
Local Operator Entanglement (LOE) has emerged an indicator of quantum chaos in many-body systems. Numerical studies have shown that, in chaotic systems, LOE grows linearly in time and displays a volume-law behavior at late times, scaling proportional...