Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Atom beam-splitter with internal state selection using spin-dependent optical standing wave potentials
Igor Kuzmenko, Yshai Avishai, Y. B. Band·Sep 28, 2025
We propose an atom beam splitter that enables the manipulation of the internal spin state of the atoms in the output beams using a spin-dependent optical potential. The utility of such an atom beam splitter is demonstrated through its application in ...
Noncommutative Landau problem in graphene: a gauge-invariant analysis with the Seiberg-Witten map
Aslam Halder·Sep 28, 2025
We investigate the relativistic quantum dynamics of amassless electron in graphene in a two-dimensional noncommutative (NC) plane under a constant background magnetic field. To address the issue of gauge invariance, we employ an effective massless NC...
Haag Duality for 2D Quantum Spin Systems
Yoshiko Ogata, David Pérez-García, Alberto Ruiz-de-Alarcón·Sep 28, 2025
Haag duality is a fundamental locality property introduced in the pioneering formulation of algebraic quantum field theory by Haag and Kastler in the 1960s. Since then, it has played a central role, most notably in the classification of superselectio...
Quantum Resonance Beyond Direct Measurement: Insights from Weak Measurement
Daiki Ueda, Izumi Tsutsui·Sep 28, 2025
Aharonov's weak value amplification realized via weak measurement provides a versatile means to measure physical parameters with high accuracy, similar to quantum resonance epitomized by the Rabi and Ramsey resonances. The similarity between the two ...
Low-Overhead and High-Fidelity Preparation of Logical Non-Clifford States with Multi-Level Transversal Injection
Jiaxuan Zhang, Tian-Hao Wei, Xi-Ning Zhuang +4 more·Sep 28, 2025
Rotation gates are widely used in various quantum algorithms. To implement fault-tolerant rotation gates, state distillation or gate synthesis is typically employed. However, the overhead of these schemes scales rapidly with increasing Clifford hiera...
Scrambling-Enhanced Quantum Battery Charging in Black Hole Analogues
Zhilong Liu, Ying Li, Zehua Tian +1 more·Sep 28, 2025
Black holes constitute nature's fastest quantum information scramblers, a phenomenon captured by gravitational analogue systems such as position-dependent XY spin chains. In these models, scrambling dynamics are governed exclusively by the hopping in...
Non-local integrals of motion for deformed $W$-algebra $W_{q,t}(g)$ associated with $g=A_l^{(1)}, D_l^{(1)}, E_{6,7,8}^{(1)}$
Michio Jimbo, Takeo Kojima·Sep 28, 2025
We present an infinite set of non-local integrals of motion for the deformed $W$-algebra $W_{q,t}(g)$ associated with the affine Lie algebras $g=A_l^{(1)}, D_l^{(1)}$ and $E_{6,7,8}^{(1)}$.They can be regarded as a two-parameter deformation of trace ...
Bayesian and geometric analyses of power spectral densities of spin qubits in Si/SiGe quantum dot devices
Yujun Choi, Hruday Mallubhotla, Mark Friesen +2 more·Sep 27, 2025
Charge noise with a power-law spectrum poses a significant challenge to high-fidelity operation of spin qubits in semiconductor devices. Recently, considerable experimental work characterized this noise using qubits as spectrometers. It apparently ar...
Ultrafast Single-Qubit Gates in the Diabatic Regime
Deniz Türkpençe, Selçuk Çakmak·Sep 27, 2025
Logic gates in superconducting quantum processors are implemented through precise quantum control techniques in the microwave regime. The choice of drive frequency and other control parameters directly determines the duration of quantum gate operatio...
Anticoherent $k$-planes and coding techniques for a 3-qubit scheme of universal quantum computing
L. Aragón-Muñoz, C. Chryssomalakos, A. G. Flores-Delgado +2 more·Sep 27, 2025
Toponomic quantum computing (TQC) employs rotation sequences of anticoherent $k$-planes to construct noise-tolerant quantum gates. In this work, we demonstrate the implementation of generalized Toffoli gates, using $k$-planes of spin systems with $s ...
INTRODUCTION AUX SYSTEMES QUANTIQUES NON-HERMITIQUES: PT-symétrie et pseudo Hermiticité
Maamache Mustapha·Sep 27, 2025
In recent decades, an important shift has taken place with the growing role of non-Hermitian quantum mechanics. What makes this framework remarkable is that the eigenvalues of the Hamiltonians involved can still be real, just as in the Hermitian case...
Ultra-narrow homogeneous linewidths of erbium-doped silica glass fibers at millikelvin temperatures: magnetic field and temperature dependence
Farhad Rasekh, Nasser Gohari Kamel, Mahdi Bornadel +4 more·Sep 27, 2025
Erbium-doped solids are promising candidates for fiber-based quantum networks due to their emission wavelength, which aligns with the telecom band over which optical fibers exhibit minimal loss. Among these, erbium-doped silica fiber (EDF) stands out...
Entanglement signatures of gapless topological phases in a $p$-wave superconductor
S. Srinidhi, Shashi C. L. Srivastava, Jayendra N. Bandyopadhyay·Sep 27, 2025
We explore the gapless topological phases of a $p$-wave superconductor, probing its rich topologically ordered phases and underlying quantum phenomena. The topological order of the system is characterized by studying its entanglement properties. This...
Room-temperature quantum entanglement in a van der Waals material
Xingyu Gao, Zhun Ge, Saakshi Dikshit +3 more·Sep 27, 2025
Entanglement is central to quantum science and technology. Atomic defects in two-dimensional (2D) van der Waals (vdW) materials offer exciting prospects for quantum sensing, with spatial resolution reaching 1 nm demonstrated using scanning probe tech...
Leveraging Quantum Computing For Recourse-Based Energy Management Under PV Generation Uncertainty
Daniel Müssig, Mustafa Musab, Markus Wappler +1 more·Sep 27, 2025
The integration of distributed energy resources, particularly photovoltaic (PV) systems and electric vehicles (EVs), introduces significant uncertainty and complexity into modern energy systems. This paper explores a novel approach to address these c...
U-generating system dynamics with a product state using local operations
Daniel Dilley, Alvin Gonzales, Jeffrey Larson +1 more·Sep 27, 2025
A quantum system may undergo undesired dynamics if it is already correlated with its environment before global unitary evolution takes place. To mitigate these effects, we apply local operations on the system of interest prior to the global evolution...
Tracking Quantum State Collapse/Decoherence in Real Time via a Superposition Trap
Hardeep Singh, Tim Kovachy·Sep 27, 2025
We propose a novel method for probing quantum state collapse and decoherence in real time using a mechanism we term the superposition trap. This approach exploits the continuity equation in quantum mechanics to engineer a configuration that spatially...
From statistical dependence to the space of possible superdeterministic theories
Mordecai Waegell, Kelvin J. McQueen·Sep 27, 2025
Bell's theorem demonstrates that any physical theory that is consistent with the predictions of quantum mechanics, and which satisfies some apparently innocuous assumptions, must violate the principle of local causality. It may therefore be possible ...
A Sparse $Z_2$ Chain Complex Without a Sparse Lift
Matthew B. Hastings·Sep 26, 2025
We construct a sparse $Z_2$ chain complex (with three different degrees, so that it corresponds to a quantum code) which does not admit a sparse lift to the integers, answering a question in Ref. 1.
Sachdev-Ye-Kitaev Model in a Quantum Glassy Landscape
Surajit Bera, Jorge Kurchan, Marco Schiro·Sep 26, 2025
We study a generalization of `Yukawa models' in which Majorana fermions, interacting via all-to-all random couplings as in the Sachdev-Ye-Kitaev (SYK) model, are parametrically coupled to disordered bosonic degrees of freedom described by a quantum $...