Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Bounding many-body properties under partial information and finite measurement statistics
Luke Mortimer, Leonardo Zambrano, Antonio Acín +1 more·Jan 15, 2026
Calculating bounds of properties of many-body quantum systems is of paramount importance, since they guide our understanding of emergent quantum phenomena and complement the insights obtained from estimation methods. Recent semidefinite programming a...
A Collection of Pinsker-type Inequalities for Quantum Divergences
Kläre Wienecke, Gereon Koßmann, René Schwonnek·Jan 15, 2026
Pinsker's inequality sets a lower bound on the Umegaki divergence of two quantum states in terms of their trace distance. In this work, we formulate corresponding estimates for a variety of quantum and classical divergences including $f$-divergences ...
Experimental Realization of Rabi-Driven Reset for Fast Cooling of a High-Q Cavity
Eliya Blumenthal, Natan Karaev, Shay Hacohen-Gourgy·Jan 15, 2026
High-Q bosonic memories are central to hardware-efficient quantum error correction, but their isolation makes fast, high-fidelity reset a persistent bottleneck. Existing approaches either rely on weak intermode cross-Kerr conversion or on measurement...
Learning Hamiltonians in the Heisenberg limit with static single-qubit fields
Shrigyan Brahmachari, Shuchen Zhu, Iman Marvian +1 more·Jan 15, 2026
Learning the Hamiltonian governing a quantum system is a central task in quantum metrology, sensing, and device characterization. Existing Heisenberg-limited Hamiltonian learning protocols either require multi-qubit operations that are prone to noise...
Realistic prospects for testing a relativistic local quantum measurement inequality
Riccardo Falcone, Claudio Conti·Jan 15, 2026
We investigate the experimental prospects for testing a relativistic local quantum measurement inequality that quantifies the trade-off between vacuum insensitivity and responsiveness to excitations for finite-size detectors. Building on the Reeh--Sc...
Principles of Optics in the Fock Space: Scalable Manipulation of Giant Quantum States
Yifang Xu, Yilong Zhou, Ziyue Hua +11 more·Jan 15, 2026
The manipulation of distinct degrees of freedom of photons plays a critical role in both classical and quantum information processing. While the principles of wave optics provide elegant and scalable control over classical light in spatial and tempor...
Addition to the dynamic Stark shift of the coherent population trapping resonance
Gavriil Voloshin, Konstantin Barantsev, Andrey Litvinov·Jan 15, 2026
This paper presents a theoretical study of the light-induced shift of the coherent population trapping resonance. An analytical model is proposed that describes the interaction of two radiation components with an atomic system using a $Λ$ scheme and ...
Complex scalar relativistic field as a probability amplitude
Yu. M. Poluektov·Jan 15, 2026
A relativistic equation for a neutral complex field as a probability amplitude is proposed. The continuity equation for the probability density is obtained. It is shown that there are two types of excitations of this field, which describe particles w...
Exponential improvement in benchmarking multiphoton interference
Rodrigo M. Sanz, Emilio Annoni, Stephen C. Wein +4 more·Jan 15, 2026
Several photonic quantum technologies rely on the ability to generate multiple indistinguishable photons. Benchmarking the level of indistinguishability of these photons is essential for scalability. The Hong-Ou-Mandel dip provides a benchmark for th...
Optimal control of a dissipative micromaser quantum battery in the ultrastrong coupling regime
Maristella Crotti, Luca Razzoli, Luigi Giannelli +2 more·Jan 15, 2026
We investigate the open system dynamics of a micromaser quantum battery operating in the ultrastrong coupling (USC) regime under environmental dissipation. The battery consists of a single-mode electromagnetic cavity sequentially interacting, via the...
Beyond the Einstein-Bohr Debate: Cognitive Complementarity and the Emergence of Quantum Intuition
Lalit Kumar Shukla·Jan 15, 2026
Recent high-precision experimental confirmations of quantum complementarity have revitalized foundational debates about measurement, description, and realism. This article argues that complementarity is most productively interpreted as an epistemic p...
Adversarial Hypothesis Testing for Quantum Channels
Masahito Hayashi, Hao-Chung Cheng, Li Gao·Jan 15, 2026
This paper presents a systematic study of adversarial hypothesis testing for both quantum-quantum (QQ) and classical-quantum (CQ) channels. Unlike conventional channel discrimination, we consider a framework where the sender, Alice, selects the chann...
Random matrix theory universality of current operators in spin-$S$ Heisenberg chains
Mariel Kempa, Markus Kraft, Robin Steinigeweg +2 more·Jan 15, 2026
Quantum chaotic systems exhibit certain universal statistical properties that closely resemble predictions from random matrix theory (RMT). With respect to observables, it has recently been conjectured that, when truncated to a sufficiently narrow en...
Quantitative approach for the Dicke-Ising chain with an effective self-consistent matter Hamiltonian
J. Leibig, M. Hörmann, A. Langheld +2 more·Jan 15, 2026
In the thermodynamic limit, the Dicke-Ising chain maps exactly onto an effective self-consistent matter Hamiltonian with the photon field acting solely as a self-consistent effective field. As a consequence, no quantum correlations between photons an...
Coherence Limits in Interference-Based cos(2$\varphi$) Qubits
S. Messelot, A. Leblanc, J. -S. Tettekpoe +4 more·Jan 15, 2026
We investigate the coherence properties of parity-protected $\cos(2\varphi)$ qubits based on interferences between two Josephson elements in a superconducting loop. We show that qubit implementations of a $\cos(2\varphi)$ potential using a single loo...
QDsiM: A Noise-Aware Simulation Toolkit for Quantum Diamond Microscope
Satyam Pandey, Abhimanyu Magapu, Prabhat Anand +2 more·Jan 15, 2026
The nitrogen-vacancy (NV) center in diamond is a leading solid-state platform for room-temperature quantum magnetometry owing to its long spin coherence times, optical spin initialization and readout, and high sensitivity to magnetic, electric, and t...
Noise-Resilient Quantum Evolution in Open Systems through Error-Correcting Frameworks
Nirupam Basak, Goutam Paul, Pritam Chattopadhyay·Jan 15, 2026
We analyze quantum state preservation in open quantum systems using quantum error-correcting (QEC) codes explicitly embedded in microscopic system-bath models. Rather than assuming abstract quantum channels, we consider multi-qubit registers coupled ...
Topology-Aware Block Coordinate Descent for Qubit Frequency Allocation of Superconducting Quantum Processors
Zheng Zhao, Weifeng Zhuang, Yanwu Gu +3 more·Jan 15, 2026
Pre-execution calibration is a major bottleneck for operating superconducting quantum processors, and qubit frequency allocation is especially challenging due to crosstalk-coupled objectives. We establish that the widely-used Snake optimizer is mathe...
On the average-case complexity of learning states from the circular and Gaussian ensembles
Maxwell West·Jan 15, 2026
Studying the complexity of states sampled from various ensembles is a central component of quantum information theory. In this work we establish the average-case hardness of learning, in the statistical query model, the Born distributions of states s...
Autonomous Quantum Simulation through Large Language Model Agents
Weitang Li, Jiajun Ren, Lixue Cheng +1 more·Jan 15, 2026
We demonstrate that large language model (LLM) agents can autonomously perform tensor network simulations of quantum many-body systems, achieving approximately 90% success rate across representative benchmark tasks. Tensor network methods are powerfu...