Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Certifying optimal device-independent quantum randomness in quantum networks
Shuai Zhao, Rong Wang, Qi Zhao·Jan 26, 2026
Bell nonlocality provides a device-independent (DI) way to certify quantum randomness, based on which true random numbers can be extracted from the observed correlations without detail characterizations on devices for quantum state preparation and me...
Quantum Key Distribution with a Negatively Charged Quantum Dot Single-Photon Source
Parvendra Kumar·Jan 26, 2026
Various quantum key distribution (QKD) protocols require bright single-photon sources with a very low probability of multiphoton emission. In this work, we investigate single-photon generation from a negatively charged quantum dot embedded in an elli...
Simultaneous determination of multiple low-lying energy levels on a superconducting quantum processor
Huili Zhang, Yibin Guo, Guanglei Xu +4 more·Jan 26, 2026
Determining the ground and low-lying excited states is critical in numerous scenarios. Recent work has proposed the ancilla-entangled variational quantum eigensolver (AEVQE) that utilizes entanglement between ancilla and physical qubits to simultaneo...
Imperfect blockade in Rydberg superatoms
Valentin Magro, Sébastien Garcia, Alexei Ourjoumtsev·Jan 26, 2026
Ensembles of atoms interacting via their Rydberg levels, known as "superatoms" for their ability to encode qubits and to emit single photons, attract increasing attention as building blocks for quantum network nodes. Assessing their performance requi...
Qubit-parity interference despite unknown interaction phases
Kratveer Singh, Kimin Park, Vojtěch Švarc +5 more·Jan 26, 2026
Quantum interference between interacting systems is fundamental to basic science and quantum technology, but it typically requires precise control of the interaction phases of lasers or microwave generators. Can interference be observed if those inte...
Physics-Informed Hybrid Quantum-Classical Dispatching for Large-Scale Renewable Power Systems:A Noise-Resilient Framework
Fu Zhang, Yuming Zhao·Jan 26, 2026
The integration of high-penetration renewable energy introduces significant stochasticity and non-convexity into power system dispatching, challenging the computational limits of classical optimization. While Variational Quantum Algorithms (VQAs) on ...
Measurement induced faster symmetry restoration in quantum trajectories
Katha Ganguly, Bijay Kumar Agarwalla·Jan 26, 2026
Continuous measurement of quantum systems provides a standard route to quantum trajectories through the successive acquisition of information which further results in measurement back-action. In this work, we harness this back-action as a resource fo...
Hamiltonian formulation of the $1+1$-dimensional $φ^4$ theory in a momentum-space Daubechies wavelet basis
Mrinmoy Basak, Debsubhra Chakraborty, Nilmani Mathur +1 more·Jan 26, 2026
We apply the wavelet formalism of quantum field theory to investigate nonperturbative dynamics within the Hamiltonian framework. In particular, we employ Daubechies wavelets in momentum space, whose basis functions are labeled by resolution and trans...
The Quantum Cliff: A Critical Proton Tunneling Threshold Determines Clinical Severity in RPE65-Mediated Retinal Disease
Biraja Ghoshal, William Woof, Bhargab Ghoshal +1 more·Jan 26, 2026
Predicting clinical severity from genotype remains a fundamental challenge in molecular medicine, particularly for enzymes whose function depends on sub-atomic-scale geometry. Mutations in the \textit{RPE65} isomerohydrolase cause Leber Congenital Am...
A Theory of Single-Antenna Atomic Beamforming
Mingyao Cui, Qunsong Zeng, Kaibin Huang·Jan 26, 2026
Leveraging the quantum advantages of highly excited atoms, Rydberg atomic receivers (RAREs) represent a paradigm shift in radio wave detection, offering high sensitivity and broadband reception. However, existing studies largely model RAREs as isotro...
Emergent Cooperation in Quantum Multi-Agent Reinforcement Learning Using Communication
Michael Kölle, Christian Reff, Leo Sünkel +3 more·Jan 26, 2026
Emergent cooperation in classical Multi-Agent Reinforcement Learning has gained significant attention, particularly in the context of Sequential Social Dilemmas (SSDs). While classical reinforcement learning approaches have demonstrated capability fo...
Fundamentals, Recent Advances, and Challenges Regarding Cryptographic Algorithms for the Quantum Computing Era
Darlan Noetzold, Valderi Reis Quietinho Leithardt·Jan 26, 2026
This book arises from the need to provide a clear and up-to-date overview of the impacts of quantum computing on cryptography. The goal is to provide a reference in Portuguese for undergraduate, master's, and doctoral students in the field of data se...
Human Cardiac Measurements with Diamond Magnetometers
Muhib Omar, Magnus Benke, Shaowen Zhang +27 more·Jan 26, 2026
We demonstrate direct, non-invasive and non-contact detection of human cardiac magnetic signals using quantum sensors based on nitrogen-vacancy (NV) centers in diamond. Three configurations were employed recording magnetocardiography (MCG) signals in...
Quantum Error Correction on Error-mitigated Physical Qubits
Minjun Jeon, Zhenyu Cai·Jan 26, 2026
We present a general framework for applying linear quantum error mitigation (QEM) techniques directly to physical qubits within a logical qubit to suppress logical errors. By exploiting the linearity of quantum error correction (QEC), we demonstrate ...
Atom-light hybrid interferometer for atomic sensing with quantum memory
Xingchang Wang, Xinyun Liang, Liang Dong +7 more·Jan 26, 2026
Quantum memories feature a reversible conversion of optical fields into long-lived atomic spin waves, and are therefore ideal for operating as sensitive atomic sensors. However, up to now, atom-light interferometers have lacked an efficient approach ...
Bohr's complementarity principle tested on a real quantum computer via interferometer experiments
Celia Álvarez Álvarez, Mariamo Mussa Juane·Jan 26, 2026
Bohr's Complementarity Principle is a core concept of quantum mechanics. In this article, an updated complementarity relation for the wave and ondulatory aspects of a quantum system is presented and discussed. Two interferometric experiments are impl...
An Adaptive Purification Controller for Quantum Networks: Dynamic Protocol Selection and Multipartite Distillation
Pranav Kulkarni, Leo Sünkel, Michael Kölle·Jan 26, 2026
Efficient entanglement distribution is a cornerstone of the Quantum Internet. However, physical link parameters such as photon loss, memory coherence time, and gate error rates fluctuate dynamically, rendering static purification strategies suboptima...
Scaling of multicopy constructive interference of Gaussian states
Matthieu Arnhem, Radim Filip·Jan 26, 2026
Quantum technology advances crucially depend on the scaling up of essential quantum resources. Their ideal multiplexing offers more significant gains in applications; however, the scaling of the nonidentical, fragile and varying resources is neither ...
Quantum Hyperuniformity and Quantum Weight
Junmo Jeon, Shiro Sakai·Jan 26, 2026
Extending hyperuniformity from classical to quantum fluctuations in electron systems yields a framework that identifies quantum phase transitions and reveals underlying gap structures through the quantum weight. We study long-wavelength fluctuations ...
Scalable Repeater Architecture for Long-Range Quantum Energy Teleportation in Gapped Systems
M. Y. Abd-Rabbou, Irfan Siddique, Saeed Haddadi +1 more·Jan 26, 2026
Quantum Energy Teleportation (QET) constitutes a paradigm-shifting protocol that permits the activation of local vacuum energy through the consumption of pre-existing entanglement and classical communication. Nevertheless, the implementation of QET i...