Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum reservoir computing using Jaynes-Cummings model
Sreetama Das, Gian Luca Giorgi, Roberta Zambrini·Sep 30, 2025
We investigate quantum reservoir computing (QRC) using a hybrid qubit-boson system described by the Jaynes-Cummings (JC) Hamiltonian and its dispersive limit (DJC). These models provide high-dimensional Hilbert spaces and intrinsic nonlinear dynamics...
Efficient Learning of Structured Quantum Circuits via Pauli Dimensionality and Sparsity
Sabee Grewal, Daniel Liang·Sep 30, 2025
We study the problem of efficiently learning an unknown $n$-qubit unitary channel in diamond distance given query access. We present a general framework showing that if Pauli operators remain low-complexity under conjugation by a unitary, then the un...
The non-stabilizerness cost of quantum state estimation
Gabriele Lo Monaco, Salvatore Lorenzo, Alessandro Ferraro +3 more·Sep 30, 2025
We study the non-stabilizer resources required to achieve informational completeness in single-setting quantum state estimation scenarios. We consider fixed-basis projective measurements preceded by quantum circuits acting on $n$-qubit input states, ...
Approximate Quantum State Preparation with Tree-Based Bayesian Optimization Surrogates
Nicholas S. DiBrita, Jason Han, Younghyun Cho +2 more·Sep 30, 2025
We study the problem of approximate state preparation on near-term quantum computers, where the goal is to construct a parameterized circuit that reproduces the output distribution of a target quantum state while minimizing resource overhead. This ta...
Neutrino backgrounds in matter-wave interferometry: implications for dark matter searches and beyond-Standard Model physics
João Paulo Pinheiro·Sep 30, 2025
We present a comprehensive theoretical analysis of neutrino-induced decoherence in macroscopic matter-wave interferometry experiments designed to search for dark matter and beyond-Standard Model physics. Our calculation includes contributions from th...
Complexity and hardness of random peaked circuits
Yuxuan Zhang·Sep 30, 2025
Near-term feasibility, classical hardness, and verifiability are the three requirements for demonstrating quantum advantage; most existing quantum advantage proposals achieve at most two. A promising candidate recently proposed is through randomly ge...
Continuum Fractons: Quantization and the Many Body Problem
Ylias Sadki, Abhishodh Prakash, S. L. Sondhi·Sep 30, 2025
We formulate a continuum quantum mechanics for non-relativistic, dipole-conserving fractons. Imposing symmetries and locality results in novel phenomena absent in ordinary quantum mechanical systems. A single fracton has a vanishing Hamiltonian, and ...
Passive detection of Schwinger boson dynamics via a qubit
Ioannis Petrides, Arpit Arora, Prineha Narang·Sep 30, 2025
The quantum sensing landscape has been revolutionized by advanced technologies like superconducting circuits and qubit-based systems which have furthered the ability to probe and understand fundamental properties of quantum matter. Here, we propose a...
Defect mediated quantum melting of charge ordered insulators
Abijith Krishnan, Ajesh Kumar, T. Senthil·Sep 30, 2025
Two-dimensional (2d) electronic systems on a lattice at fractional filling $ν= p/q$ exhibit a competition between charge ordered insulators, called Wigner-Mott insulators (WMIs), at large Coulomb repulsion and Fermi-liquid metals at large electronic ...
Quantum Simulation of Random Unitaries from Clebsch-Gordan Transforms
Dmitry Grinko, Satoshi Yoshida·Sep 30, 2025
We present a general method for simulating an action of $t$ copies of a Haar random unitary for arbitrary compact groups. This construction can be viewed as a representation-theoretic generalization of Zhandry's compressed function oracle technique. ...
Amplified response of cavity-coupled quantum-critical systems
Shouvik Sur, Yiming Wang, Mounica Mahankali +2 more·Sep 30, 2025
A quantum critical point develops when matter undergoes a continuous transformation between distinct ground states at absolute zero. It hosts pronounced quantum fluctuations, which render the system highly susceptible to external perturbations. While...
Non-Hermitian comb effect in coupled clean and quasiperiodic chains
Soumya Ranjan Padhi, Souvik Roy, Biswajit Paul +2 more·Sep 30, 2025
We study localization properties in a system of non-Hermitian quasiperiodic chain coupled to a uniform chain or clean chain by inter-chain hopping. We find that in the limit of weak inter-chain coupling, such a coupled system exhibits transitions fro...
Quantum Optics and Quantum Electrodynamics of Strong Field Processes
Marcelo F. Ciappina, Misha Yu. Ivanov, Maciej Lewenstein +3 more·Sep 30, 2025
In its beginnings, the physics of intense laser-matter interactions was the physics of multiphoton processes. The theory was reduced then to high-order perturbation theory, while treating matter and light in a quantum manner. With the advent of chirp...
Probing the Critical Point (CritPt) of AI Reasoning: a Frontier Physics Research Benchmark
Minhui Zhu, Minyang Tian, Xiaocheng Yang +61 more·Sep 30, 2025
While large language models (LLMs) with reasoning capabilities are progressing rapidly on high-school math competitions and coding, can they reason effectively through complex, open-ended challenges found in frontier physics research? And crucially, ...
Electrical Readout of Spin Environments in Diamond for Quantum Sensing
Olga Rubinas, Michael Petrov, Emilie Bourgeois +4 more·Sep 30, 2025
Nitrogen-vacancy (NV) centres in diamond are a key platform for quantum sensing and quantum information, combining long coherence times with controllable spin-spin interactions. Most of current quantum algorithms rely on optical access, which limit d...
Topology of the Aharonov-Bohm effect in different reference frames
Hiram S. M. Rodrigues, Katson W. O. Arévola, Pablo L. Saldanha·Sep 30, 2025
Recent works showed that the Aharonov-Bohm (AB) phase difference for a quantum charged particle can be written in terms of electric and magnetic fluxes in a spacetime surface whose boundaries are the possible particle worldlines in the interferometer...
Structure-preserving numerical calculation of wave equation for a vector field
Takuya Tsuchiya·Sep 30, 2025
For the Proca equation, which is a wave equation for a vector field, we derive the canonical formulation including constraints from the Stueckelberg action and propose discrete equations with a structure-preserving scheme for conserving the constrain...
Stab-QRAM: An All-Clifford Quantum Random Access Memory for Special Data
Guangyi Li, Yu Gan, Zeguan Wu +3 more·Sep 30, 2025
Quantum random access memories (QRAMs) are pivotal for data-intensive quantum algorithms, but existing general-purpose and domain-specific architectures are hampered by a critical bottleneck: a heavy reliance on non-Clifford gates (e.g., T-gates), wh...
Deterministic single-photon source over the terahertz regime
Caspar Groiseau, Miguel Á. Martínez-García, Diego Martín-Cano +1 more·Sep 30, 2025
We propose a deterministic single-photon source in the terahertz (THz) regime, triggered by a sequence of coherent optical pulses. The scheme leverages the permanent dipole moment of a single-polar quantum emitter to induce THz transitions between op...
Nondestructive characterization of laser-cooled atoms using machine learning
G. De Sousa, M. Doris, D. D'Amato +3 more·Sep 30, 2025
We develop machine learning techniques for estimating physical properties of laser-cooled potassium-39 atoms in a magneto-optical trap using only the scattered light -- i.e., fluorescence -- that is intrinsic to the cooling process. In-situ snap-shot...