Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tensor network characterization and mitigation of readout errors
Yuchen Guo, Shuo Yang·Jun 24, 2026
Readout errors are a major bottleneck to extracting reliable information from near-term quantum processors, especially when spatial correlations are non-negligible. We present a unified tensor-network framework that models the readout process as a ma...
From Rubble Simulation to Active Magnetic Mapping: Quantum Sensing for Disaster Response
Samuel Tovey, Stefan Prestel, Hiroshi Yamauchi·Jun 24, 2026
Locating survivors of building collapses within the first 72 hours is a critical challenge in disaster response, and existing sensing modalities provide only partial information about the structure beneath the rubble. This paper proposes drone-based ...
From spectral structure to sensing limits in quantum thermometry
Youssef Aiache, Simone Cavazzoni, Abderrahim El Allati +2 more·Jun 24, 2026
The precision of a quantum thermometer is fundamentally constrained by the spectral structure of the probe itself, and a systematic mapping between the configurations of energy levels and thermometric performance provides relevant information to desi...
Klein--Gordon Dynamics from Intrinsic Phase Periodicity
Emiliano Puddu·Jun 24, 2026
This work develops a phase-based formulation of relativistic wave dynamics, demonstrating that the Klein--Gordon equation emerges naturally from the foundational assumption of intrinsic phase periodicity in material fields. Mapping the phase directly...
Finite-Shot Sensitivity for Moment Estimation in Quantum Metrology
Shaowei Du, Shuheng Liu, Weidong Li +3 more·Jun 24, 2026
The quantum Cramér-Rao bound can be saturated only asymptotically and does not specify how many measurements are needed for a concrete estimator to approach it. We develop a finite-measurement theory for method-of-moments estimation, where the parame...
Resonant false vacuum decay in two dimensions on a 4000-qubit quantum annealer
Gregor Humar, Jean-Yves Desaules, Luka Pavešić +4 more·Jun 24, 2026
From cosmology to quantum matter, metastable states often decay through the nucleation and growth of competing domains, with false vacuum decay providing the paradigmatic example of this process. Here we demonstrate a distinct regime in which domain ...
Evolving Quantum Error-Correcting Encodings for Molecular Simulation
Kenny Heitritter, James Brown, Tarini Hardikar·Jun 24, 2026
Useful quantum algorithms require many coupled discrete design choices. We study LLM-driven evolutionary program synthesis -- a language model edits a program, an external verifier scores the result, and high-scoring programs are retained and re-muta...
Nonlinear Dynamics of Coherent Parametric Amplification in Multipartite two-level System under Intrinsic Decoherence
Muhammad Ibrahim·Jun 24, 2026
In this work, we study the dynamics of global quantum discord and quantum Fisher information in a multipartite system of two-level atoms interacting with a coherent field. The model includes parametric amplification, Kerr-type nonlinearity, and intri...
Collective rotational cat states of molecules in microwave cavities
Volker Karle, Florian Kluibenschedl, Mikhail Lemeshko +1 more·Jun 24, 2026
We show theoretically that an ensemble of polar molecules coupled to a microwave cavity supports hybrid rotational-photonic cat states. The cavity couples to a symmetric rotor in the bright manifold of $N$ molecules with $\sqrt{N}$-enhancement. In th...
A Candidate Framework for Free-Space Quantum Key Distribution based on Geometrical-Configuration Modulation
Yu-Ming Bai, Yu-Xuan Liu, Ming-Han Ding +1 more·Jun 24, 2026
This paper proposes a candidate framework for free-space quantum key distribution (QKD) based on geometrical-configuration modulation (GM). In the minimal implementation considered here, Alice coherently splits a single photon emitted from one source...
Benchmarking Dark Matter Search using a Parity-Check Protocol with Machine-Learning Optimized Pulses
Yu-Han Chang, Ilya Moskalenko, Marko Kuzmanović +7 more·Jun 24, 2026
We report on an improved microwave detection protocol for dark matter candidates such as the axion and the dark photon. We employ a superconducting transmon qubit dispersively coupled to a double-cavity system, enabling quantum non-demolition measure...
A Short Note on the Generators of Controlled Quantum Gates
Richard M. Milbradt, Christian B. Mendl·Jun 24, 2026
We present the analytical generators for arbitrary multi-qubit controlled gates. Closed forms for the generating Hamiltonians are given for gates with both multiple control and target qubits, as well as for arbitrary control conditions. This allows u...
Sp(2N, R) interferometry in multi-mode Gaussian bosonic systems for optimal metrology and quantum control
Chenwei Lv, Renbao Liu·Jun 24, 2026
Multi-mode interferometers for bosons in Gaussian states are important systems for quantum metrology with precision beyond the standard quantum limit and for bosonic quantum computing. However, there is a lack of theoretical foundation for generic $N...
Radial Schmidt mode detector of entangled photons
Radhika Prasad, Nilakshi Senapati, Abhinandan Bhattacharjee +1 more·Jun 24, 2026
High-dimensional spatially entangled two-photon state generated by spontaneous parametric down-conversion process (SPDC) has become a promising resource for several quantum information science applications. For harnessing high-dimensional entanglemen...
Distributed SDN-Based Communication Architecture for the Pods4Rail System
Dingyang Liu, Dereje Mechal Molla, Léo Mendiboure +1 more·Jun 24, 2026
Future multimodal transportation systems require reliable, low-latency communication infrastructures to coordinate autonomous vehicles and moving infrastructure across rail and road networks. Traditional centralized control architectures struggle to ...
Quantum steering in networks: Measurement-device-independent detection, continuous variables, and practical Gaussian schemes
Shao-Hua Hu, Chung-Yun Hsieh, Huan-Yu Ku +2 more·Jun 24, 2026
We consider quantum steering certification in multipartite networks, with a focus on minimal trust scenarios: all-except-one parties are untrusted and treated device-independently. We show that it is always possible to lift steering certification to ...
Average-Power-Budgeted Underwater Vehicle Control via Constrained Reinforcement Learning
Yinuo Wang, Gavin Tao, Yuze Liu +1 more·Jun 24, 2026
Underwater vehicles operate from a fixed onboard energy budget that propulsion rapidly depletes, so a controller that completes its task while drawing less thruster power directly extends mission range and endurance. Reinforcement learning yields cap...
Exact Leg-Cut Influence Functional and Emergence of Gaussian Entanglement Theory in a Statistical-Dressing Ladder Model
Babatunde Moses Ayeni·Jun 24, 2026
The emergence of Gaussian effective field theories in low-dimensional quantum systems is traditionally understood through top-down frameworks such as bosonization and Luttinger-liquid theory. However, these approaches typically focus on the long-wave...
Quantum Detectability in Invisibility Cloaks
Mohammad Mehdi Sadeghi·Jun 24, 2026
Classical invisibility cloaks are designed to suppress selected scattering signatures and thereby make an object appear absent to external electromagnetic probes. However, the suppression of a classical scattering observable does not, by itself, esta...
Long-lasting Topological Entanglement in a Monitored Rashba Nanowire
Emanuele Guida, Giulia Salatino, Gianluca Passarelli +2 more·Jun 24, 2026
We study the topological properties of a monitored Rashba chain along quantum-jump trajectories, investigating the persistence of the initial topological value of the disconnected entanglement entropy (DEE). We find that the DEE persists in its topol...