Papers
Live trends in quantum computing research, updated daily from arXiv.
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Testing classical-quantum gravity with geodesic deviation
Tomoya Hirotani, Akira Matsumura·Mar 31, 2026
A novel semiclassical gravity model proposed by Oppenheim et al., that consistently describes interactions between quantum systems and a classical gravitational field, has recently attracted considerable attention. However, the limitations and phenom...
Direct measurement of the energy spectrum of a quantum dot qubit
J. Reily, Daniel J. King, Jonathan C. Marcks +8 more·Mar 31, 2026
The mapping between gate voltages applied to a double quantum dot, and the parameters of a Hubbard-like Hamiltonian, is of utmost importance for understanding and operating spin qubits. State-of-the-art techniques for measuring Hamiltonian parameters...
Pointwise and dynamic programming control synthesis for finite-level open quantum memory systems
Igor G. Vladimirov, Ian R. Petersen, Guodong Shi·Mar 31, 2026
This paper is concerned with finite-level quantum memory systems for retaining initial dynamic variables in the presence of external quantum noise. The system variables have an algebraic structure, similar to that of the Pauli matrices, and their Hei...
Generation of dipolar supersolids through a barrier sweep in droplet lattices
E. L. Brakensiek, G. A. Bougas, S. I. Mistakidis·Mar 31, 2026
We propose a dynamical protocol to generate supersolids in dipolar quantum gases by sweeping a repulsive Gaussian barrier through an incoherent quasi-one-dimensional droplet array. Supersolidity is inferred by monitoring the ensuing dynamics of the d...
A Floer Theoretic Approach to Energy Eigenstates on one Dimensional Configuration Spaces
Kevin Ruck·Mar 31, 2026
In this article we consider two classical problems in Quantum Mechanics, namely the 'particle on a ring' and the 'particle in a box' from the viewpoint of symplectic topology. Interpreting the solutions of the corresponding time independent Schröding...
Calculating the quantum Fisher information via the truncated Wigner method
Thakur G. M. Hiranandani, Joseph J. Hope, Simon A. Haine·Mar 31, 2026
In this work, we propose new methods of parameter estimation using stochastic sampling quantum phase-space simulations. We show that it is possible to compute the quantum Fisher information (QFI) from semiclassical stochastic samples using the Trunca...
Quantum Fisher information in many-photon states from shift current shot noise
Evgenii Barts, Takahiro Morimoto, Naoto Nagaosa·Mar 31, 2026
Quantum Fisher information (QFI) sets the ultimate precision of optical phase measurements and reveals multiphoton entanglement, but it is not accessible with conventional photodetection. We theoretically predict that a photodetector utilizing the sh...
Quantum heat transport in nonequilibrium anisotropic Dicke model
Kong Junran, Mao Mang, Liu Huan +1 more·Mar 31, 2026
Nonequilibrium heat transport and quantum thermodynamics in light-matter interacting systems have received increasing attention. Quantum thermal devices, e.g., heat valve and head diode, have been realized. Recently, it has been discovered that the a...
High-efficiency and noise-immune quantum battery
Guohui Dong, Mengqi Yu, Yao Yao·Mar 31, 2026
Nowadays, quantum batteries (QBs) have been designed to outperform their classical counterparts by leveraging quantum advantages. For instance, the charging power greatly benefits from the entanglement generation of a collective charging scheme (e.g....
Time-resolved role of coherence and delocalization in photosynthetic energy transfer from an extended exciton model
Jingyu Liu, Tao-Yuan Du·Mar 31, 2026
Photosynthetic antenna complexes achieve high quantum efficiency through exciton transport in coupled pigment networks. Conventional Frenkel-exciton models treat each chromophore as a structureless site and neglect internal electronic degrees of free...
Scalable phonon-laser arrays with self-organized synchronization
Hugo Molinares, Guillermo Romero, Victor Montenegro +1 more·Mar 31, 2026
Quantum mechanical oscillators operating at frequencies up to the GHz regime have been predicted to support phonon lasing -- self-sustained coherent vibrational motion emerging when the effective gain exceeds intrinsic losses. Current phonon-laser pr...
Ether of Orbifolds
Henry Lamm·Mar 31, 2026
The orbifold lattice has been proposed as a route to practical quantum simulation of Yang--Mills theory, with claims of exponential speedup over all known approaches. Through analytical derivations, Monte Carlo simulation, and explicit circuit constr...
Oxide-nitride heteroepitaxy for low-loss dielectrics in superconducting quantum circuits
David A. Garcia-Wetten, Mitchell J. Walker, Peter G. Lim +9 more·Mar 30, 2026
Superconducting qubits show great promise for the realization of fault-tolerant quantum computing, but lossy, amorphous dielectrics limit current technology. Identifying highly crystalline and stoichiometric dielectrics with intrinsically low microwa...
The Contextual Modal Logic of a Wigner's Friend Generalization
Felipe Dilho Alves, João Carlos Alves Barata·Mar 30, 2026
Quantum mechanics has been subject to logical scrutiny since its inception. The behavior of quantum systems, which are fundamentally dissimilar from classical systems, often appears to point to a logical inconsistency in quantum mechanics, allegedly ...
Hybrid Quantum-Classical AI for Industrial Defect Classification in Welding Images
Akshaya Srinivasan, Xiaoyin Cheng, Jianming Yi +4 more·Mar 30, 2026
Hybrid quantum-classical machine learning offers a promising direction for advancing automated quality control in industrial settings. In this study, we investigate two hybrid quantum-classical approaches for classifying defects in aluminium TIG weld...
Can Quantum Field Theory be Recovered from Time-Symmetric Stochastic Mechanics? Part II: Prospects for a Trajectory Interpretation
Simon Friederich, Mritunjay Tyagi·Mar 30, 2026
In a companion paper we derived a unique time-reversal-invariant stochastic generalization of the Liouville equation and showed that it coincides with the evolution equation for the Husimi $Q$-function in a broad class of bosonic quantum field theori...
Remarks on "Further comments on "Rebuttal of "Refutation of "Comment on "Reply to "Comments on "A genuinely natural information measure" " " " " " "
Z. Sommer, A. Winter·Mar 30, 2026
It's a bit tedious, but as John Doe and Jean Roe have insisted on offering further comments on our comprehensive refutation of the former's already tiringly obstinate advances, we feel compelled to review their not even wrong opinions once again, hop...
Bell's Inequality, Causal Bounds, and Quantum Bayesian Computation: A Unified Framework
Nick Polson, Vadim Sokolov, Daniel Zantedeschi·Mar 30, 2026
Bell inequalities characterize the boundary of the local-realist correlation polytope -- the set of joint probability distributions achievable by classical hidden-variable models. Quantum mechanics exceeds this boundary through non-commutativity, rea...
Zeno-Constrained Formation of Relativistic Mass Shells
Ansgar Pernice·Mar 30, 2026
We study an extension of the quantum linear Boltzmann equation describing irreversible momentum-space dynamics of an open quantum system under strong continuous monitoring. The monitored observable is taken to be a quadratic form in an extended, pure...
Iterative Optimization with Partial Convergence Guarantees on Neutral Atom Quantum Computers
Cédrick Perron, Yves Bérubé-Lauzière, Victor Drouin-Touchette·Mar 30, 2026
Neutral atom quantum computers (NAQCs) have emerged as a promising platform for solving the maximum weighted independent set (MWIS) problem. However, analog quantum approaches face two key limitations: constraints of the atomic layout on realizable g...