Papers
Live trends in quantum computing research, updated daily from arXiv.
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Many-Body Entanglement in Solid-State Emitters
Emma Daggett, Christian M. Lange, Bennet Windt +23 more·Nov 25, 2025
The preparation and control of quantum states lie at the heart of quantum information science (QIS). Recent advances in solid-state quantum emitters (QEs) and nanophotonics have transformed the landscape of quantum photonic technologies, enabling sca...
Super-resolution microscopy via fluctuation-enhanced spatial mode demultiplexing
Stanislaw Kurdzialek·Nov 25, 2025
We introduce a superresolution technique that combines spatial mode demultiplexing (SPADE) with emitter blinking. We show that temporal fluctuations not only enhance the precision of SPADE imaging, but also drastically simplify the measurement requir...
Nonreciprocal quantum information processing with superconducting diodes in circuit quantum electrodynamics
Nicolas Dirnegger, Prineha Narang, Arpit Arora·Nov 25, 2025
Introducing new components and functionalities into quantum devices is critical in advancing state-of-the-art hardware. Here, we propose superconducting diodes (SDs) as a coherent nonreciprocal element in circuit quantum electrodynamics (cQED) archit...
Baby universe as logical qubits: information recovery in random encoding
Takato Mori, Beni Yoshida·Nov 25, 2025
We revisit whether a semiclassical closed baby universe in AdS/CFT necessarily possess a trivial one-dimensional Hilbert space or may instead carry a large entropy. Recent results on Haar random encoding suggest a breakdown of complementary recovery,...
Quantum Key Distribution: Bridging Theoretical Security Proofs, Practical Attacks, and Error Correction for Quantum-Augmented Networks
Nitin Jha, Abhishek Parakh, Mahadevan Subramaniam·Nov 25, 2025
Quantum Key Distribution (QKD) is revolutionizing cryptography by promising information-theoretic security through the immutable laws of quantum mechanics. Yet, the challenge of transforming these idealized security models into practical, resilient s...
Efficient Estimation of Multiple Temperatures via a Collisional Model
Srijon Ghosh, Sagnik Chakraborty, Rosario Lo Franco·Nov 25, 2025
We present a quantum thermometric protocol for the estimation of multiple temperatures within the collisional model framework. Employing the formalism of multiparameter quantum metrology, we develop a systematic strategy to estimate the temperatures ...
The rationality of radical pair mechanism in real biological systems
Xiaoyu Chen, Haibin Liu, Jianming Cai·Nov 25, 2025
The radical pair mechanism (RPM) in the chemical magnetic compass model is considered to be one of the most promising candidates for the avian magnetic navigation, and quantum needle phenomenon further boosts the navigation precision to a new high le...
Attosecond momentum-resolved resonant inelastic x-ray scattering for imaging coupled electron-hole dynamics
Maksim Radionov, Daria Popova-Gorelova·Nov 25, 2025
Improving our understanding of electron dynamics is essential for advancing energy transfer, optoelectronics, light harvesting systems and quantum computing. Recent developments in attosecond x-ray sources provide the fundamental possibility of obser...
Is the large uncertainty of $δ_{CP}$ fundamentally encoded in the neutrino quantum state?
Michela Ignoti, Claudia Frugiuele, Matteo G. A. Paris +1 more·Nov 25, 2025
The precise measurement of the leptonic CP-violating phase $δ_{CP}$ remains one of the major open challenges in neutrino physics, as current experiments achieve only very limited accuracy. We address this issue through the lens of quantum estimation ...
The Cumulants Expansion Approach: The Good, The Bad and The Ugly
Johannes Kerber, Helmut Ritsch, Laurin Ostermann·Nov 25, 2025
The configuration space, i.e. the Hilbert space, of compound quantum systems grows exponentially with the number of its subsystems: its dimensionality is given by the product of the dimensions of its constituents. Therefore a full quantum treatment i...
An Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols
Ya-Tang Yu, Hsin-Lien Lee, Ting Hsu +3 more·Nov 25, 2025
Fast coherent state transport is essential to quantum computation and quantum information processing. While an adiabatic transport of atomic qubits guarantees a high fidelity of the state preparation, it requires a long timescale that defies efficien...
Quantum Framework for Wavelet Shrinkage
Brani Vidakovic·Nov 25, 2025
This paper develops a unified framework for quantum wavelet shrinkage, extending classical denoising ideas into the quantum domain. Shrinkage is interpreted as a completely positive trace-preserving process, so attenuation of coefficients is carried ...
Entropy Flow and Exceptional-Point Structure in Two-Mode Squeezed-Bath Dynamics
Eric R. Bittner·Nov 24, 2025
Squeezed reservoirs provide a powerful means of engineering nonclassical noise and controlling irreversible dynamics in open quantum systems. Here we develop a comprehensive analysis of two coupled harmonic oscillators driven by independent squeezed ...
Shake before use: universal enhancement of quantum thermometry by unitary driving
Emanuele Tumbiolo, Lorenzo Maccone, Chiara Macchiavello +2 more·Nov 24, 2025
Quantum thermometry aims at determining temperature with ultimate precision in the quantum regime. Standard equilibrium approaches, limited by the Quantum Fisher Information given by static energy fluctuations, lose sensitivity outside a fixed temper...
Holographic duality between bulk topological order and boundary mixed-state order
Tsung-Cheng Lu, Yu-Jie Liu, Sarang Gopalakrishnan +1 more·Nov 24, 2025
We introduce a holographic framework for analyzing the steady states of repeated quantum channels with strong symmetries. Using channel-state duality, we show that the steady state of a $d$-dimensional quantum channel is holographically mapped to the...
Monogamy of Mutual Information in Graph States
Jesus Fuentes, Cynthia Keeler, William Munizzi +1 more·Nov 24, 2025
The monogamy of mutual information (MMI) is a quantum entropy inequality that enforces the non-positivity of tripartite information. We investigate the failure of MMI in graph states as a forbidden-subgraph phenomenon, conjecturing that every MMI-vio...
Modelling and experimental verification of photoelectrical response of NV diamond spin centres
Josef Soucek, Michael Petrov, Michal Gulka +2 more·Nov 24, 2025
We report on a mathematical model of the photoelectric response of NV colour centres in diamond, that can be employed for sensing and quantum science information applications. Although the model applies to NV centre in diamond, it can be applied with...
Performance Guarantees for Quantum Neural Estimation of Entropies
Sreejith Sreekumar, Ziv Goldfeld, Mark M. Wilde·Nov 24, 2025
Estimating quantum entropies and divergences is an important problem in quantum physics, information theory, and machine learning. Quantum neural estimators (QNEs), which utilize a hybrid classical-quantum architecture, have recently emerged as an ap...
A demonstration that classical gravity does not produce entanglement
Mike D. Schneider, Nick Huggett, Niels Linnemann·Nov 24, 2025
Once again, dispute has arisen over the interpretation of proposed quantum information theory experiments to probe the quantum nature of gravity by testing for gravitationally induced entanglement (GIE) between two spatially separated massive particl...
Entropic Dynamics approach to Quantum Electrodynamics
Ariel Caticha·Nov 24, 2025
Entropic dynamics (ED) is a framework that allows one to derive quantum theory as a Hamilton-Killing flow on the cotangent bundle of a statistical manifold. These flows are such that they preserve the symplectic and the (information) metric geometrie...