Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Symmetry and Topology in the Non-Hermitian Kitaev chain
Ayush Raj, Soham Ray, Sai Satyam Samal·Jan 2, 2026
We investigate the non-Hermitian Kitaev chain with non-reciprocal hopping amplitudes and asymmetric superconducting pairing. We work out the symmetry structure of the model and show that particle-hole symmetry (PHS) is preserved throughout the entire...
On orthoposets of numerical events in quantum logic
Dietmar Dorninger, Helmut Länger·Jan 2, 2026
Let S be a set of states of a physical system and p(s) the probability of the occurrence of an event when the system is in state s in S. Such a function p from S to [0,1] is known as a numerical event or more accurately an S-probability. A set P of n...
Exponentially Accelerated Sampling of Pauli Strings for Nonstabilizerness
Zhenyu Xiao, Shinsei Ryu·Jan 2, 2026
Quantum magic, quantified by nonstabilizerness, measures departures from stabilizer structure and underlies potential quantum speedups. We introduce an efficient classical framework for computing stabilizer Rényi entropies and stabilizer nullity of g...
The Ground State Energy of a Mean-Field Fermi Gas in Two Dimensions
Gregorio Casadei, Sascha Lill·Jan 2, 2026
We rigorously establish a formula for the correlation energy of a two-dimensional Fermi gas in the mean-field regime for potentials whose Fourier transform $\hat{V}$ satisfies $\hat{V}(\cdot) | \cdot | \in \ell^1$. Further, we establish the analogous...
Training-Free Certified Bounds for Quantum Regression: A Scalable Framework
Demerson N. Gonçalves, Tharso D. Fernandes, Pedro H. G. Lugao +1 more·Jan 2, 2026
We present a training-free, certified error bound for quantum regression derived directly from Pauli expectation values. Generalizing the heuristic of minimum accuracy from classification to regression, we evaluate axis-aligned predictors within the ...
Geometric Complexity of Quantum Channels via Unitary Dilations
Alberto Acevedo, Antonio Falcó·Jan 2, 2026
Nielsen's geometric approach to quantum circuit complexity provides a Riemannian framework for quantifying the cost of implementing unitary (closed--system) dynamics. For open dynamics, however, the reduced evolution is described by quantum channels ...
Qubits and Vacuum Amplitudes
Germán Rodrigo·Jan 2, 2026
High-energy colliders, such as the Large Hadron Collider (LHC) at CERN, are genuine quantum machines, so, in line with Richard Feynman's original motivation for Quantum Computing, the scattering processes that take place there are natural candidates ...
Quantum Approaches to the Minimum Edge Multiway Cut Problem
Ali Abbassi, Yann Dujardin, Eric Gourdin +2 more·Jan 2, 2026
We investigate the minimum edge multiway cut problem, a fundamental task in evaluating the resilience of telecommunication networks. This study benchmarks the problem across three quantum computing paradigms: quantum annealing on a D-Wave quantum pro...
Assessing Quantum Annealing to Solve the Minimum Vertex Multicut
Ali Abbassi, Yann Dujardin, Eric Gourdin +2 more·Jan 2, 2026
Cybersecurity in telecommunication networks often leads to hard combinatorial optimization problems that are challenging to solve with classical methods. This work investigates the practical feasibility of using quantum annealing to address the Restr...
Effects of Donor-Acceptor Quantum Coherence and Non-Markovian Bath on the Distance Dependence of Resonance Energy Transfer
Seogjoo J. Jang·Jan 2, 2026
Accurate information on the distance dependence of resonance energy transfer (RET) is crucial for its utilization as a spectroscopic ruler \re{of} nanometer scale distances. In this regard, understanding the effects of donor-acceptor quantum coherenc...
Pseudo-Hermitian Magnon Dynamics
Jamal Berakdar, Xi-guang Wang·Jan 2, 2026
A defining quantity of a physical system is its energy which is represented by the Hamiltonian. In closed quantum mechanical or/and coherent wave-based systems the Hamiltonian is introduced as a Hermitian operator which ensures real energy spectrum a...
Ultracold Quantum Gravimeters: An Introduction for Geophysicists
Ivaldevingles Rodrigues De Souza Junior, Andrea Trombettoni, Carla Braitenberg·Jan 2, 2026
This paper aims at providing an accessible introduction to ultracold quantum gravimeters tailored for geophysicists. We do not focus here on geophysical applications, as these are already well known to geophysicists, but rather provide a pedagogical ...
Quantum Simulation of Protein Fragment Electronic Structure Using Moment-based Adaptive Variational Quantum Algorithms
Biraja Ghoshal·Jan 2, 2026
Background: Understanding electronic interactions in protein active sites is fundamental to drug discovery and enzyme engineering, but remains computationally challenging due to exponential scaling of quantum mechanical calculations. Results: We pres...
Experimental exclusion of a generalized Károlyházy gravity-induced decoherence model
Nicola Bortolotti, Kristian Piscicchia, Matthias Laubenstein +4 more·Jan 2, 2026
We report new experimental constraints on the generalized version of the gravity-induced decoherence model originally proposed by Károlyházy. Using data collected by the VIP Collaboration at the INFN Gran Sasso National Laboratory with a high-purity ...
Photonic Reservoir Engineering via 2D $Λ$-Type Atomic Arrays in Waveguide QED
Thi Phuong Anh Nguyen, Le Phuong Hoang, Xuan Binh Cao·Jan 2, 2026
Electromagnetically induced transparency (EIT) in $Λ$-type atomic systems underpins quantum technologies such as high-fidelity memory and nonlinear optics, but conventional setups face intrinsic limitations. Standard geometries of one-dimensional ato...
Coordination-driven magic numbers in protonated argon clusters
Saajid Chowdhury, María Judit Montes de Oca-Estévez, Florian Foitzik +6 more·Jan 2, 2026
The structural properties of rare-gas clusters can be primarily described by a simple sphere packing model or by pairwise interactions. Remarkably, adding a single proton yields a large set of magic numbers that has remained unexplained. In this Lett...
Computational Modeling of Exciton-bath Hamiltonians for LH2 and LH3 Complexes of Purple Photosynthetic Bacteria at Room Temperature
Daniel Montemayor, Eva Rivera, Seogjoo J. Jang·Jan 2, 2026
Light harvesting 2 (LH2) complex is a primary component of the photosynthetic unit of purple bacteria that is responsible for harvesting and relaying excitons. The electronic absorption line shape of LH2 contains two major bands at 800 nm and 850 nm ...
Chaos and thermalization in Clifford-Floquet dynamics
Anton Kapustin, Daniil Radamovich·Jan 1, 2026
We study the ergodic properties of a unitary Floquet dynamics arising from the repeated application of a translationally-invariant Clifford Quantum Cellular Automata to an infinite system of qubits in d dimensions. One expects that if the QCA does no...
Casimir interactions between two parallel graphene sheets carrying steady-state drift currents
Modi Ke, Dai-Nam Le, Lilia M. Woods·Jan 1, 2026
We investigate the fluctuation-induced Casimir interactions between two parallel graphene sheets carrying steady-state drift currents. The graphene properties are modeled based on the shifted Fermi disk model to capture the non-equilibrium optical re...
Non-Hermitian Band Topology and Edge States in Atomic Lattices
Wenxuan Xie, John C Schotland·Jan 1, 2026
We investigate the band structure and topological phases of one- and two-dimensional bipartite atomic lattices mediated by long-range dissipative radiative coupling. By deriving an effective non-Hermitian Hamiltonian for the single-excitation sector,...