Papers
Live trends in quantum computing research, updated daily from arXiv.
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Quantum Channel Masking
Anna Honeycutt, Hailey Murray, Eric Chitambar·Oct 10, 2025
Quantum masking is a special type of secret sharing in which some information gets reversibly distributed into a multipartite system, leaving the original information inaccessible to each subsystem. This paper proposes a dynamical extension of quantu...
A Decoy-like Protocol for Quantum Key Distribution: Enhancing the Performance with Imperfect Single Photon Sources
Chanaprom Cholsuk, Furkan Ağlarcı, Daniel K. L. Oi +2 more·Oct 10, 2025
Quantum key distribution (QKD) relies on single photon sources (SPSs), e.g. from solid-state systems, as flying qubits, where security strongly requires sub-Poissonian photon statistics with low second-order correlation values (\$g^{(2)}(0)\$). Howev...
Coherent control of ionization via stabilization by resonant pulse pairs
Edvin Olofsson, Evan Lovelle Fulton, Rezvan Tahouri +3 more·Oct 10, 2025
We study the nonlinear and resonant process of two-photon ionization of atoms (He and H) in a pump-probe scheme. The pump pulse prepares the quantum system in a superposition of the ground state and an excited bound state. By varying the phase differ...
A Quantum-Inspired Algorithm for Solving Sudoku Puzzles and the MaxCut Problem
Max B. Zhao, Fei Li·Oct 10, 2025
We propose and evaluate a quantum-inspired algorithm for solving Quadratic Unconstrained Binary Optimization (QUBO) problems, which are mathematically equivalent to finding ground states of Ising spin-glass Hamiltonians. The algorithm employs Matrix ...
Magnetotactic bacterial populations studied with a Pound-Drever-Hall atomic magnetometer
María Hernández Ruiz, Christopher Kiehl, Vito Giovanni Lucivero +1 more·Oct 10, 2025
We demonstrate an optically pumped magnetometer that monitors spin polarization using Pound Drever Hall (PDH) technique. The instrument exhibits a noise floor of 22.2 pT/sqrt(Hz) limited by optical photon shot noise, short-term instability of 30.8 pT...
Two-Photon Induced Coherence without Induced Emission
Dong-Gil Im, Seung-Yeun Yoo, Chung-Hyun Lee +2 more·Oct 10, 2025
At the heart of recent breakthroughs in quantum imaging and spectroscopy utilizing undetected photons lies the quantum optical effect known as induced coherence without induced emission. This fundamental quantum interference effect has unlocked new p...
Structure of quantum measurements implementable with one round of classical communication
Arthur C. R. Dutra, Ties-A. Ohst, Hai-Chau Nguyen +1 more·Oct 10, 2025
Measurements that can be implemented via local operations and classical communication (LOCC) constitute a class of operations that is available in future quantum networks in which parties share entangled resource states. We characterise the different...
A Framework for Distributed Resource Allocation in Quantum Networks
Nitish K. Panigrahy, Leonardo Bacciottini, C. V. Hollot +5 more·Oct 10, 2025
We introduce a distributed resource allocation framework for the Quantum Internet that relies on feedback-based, fully decentralized coordination to serve multiple co-existing applications. We develop quantum network control algorithms under the math...
Metaplectic time-frequency representations
Gianluca Giacchi·Oct 10, 2025
Time-frequency representations stemmed in 1932 with the introduction of the Wigner distribution. For most of the 20th century, research in this area primarily focused on defining joint probability distributions for position and momentum in quantum me...
Fiber-optic power limiter device based on carbon nanotubes
Ekaterina Borisova, Anastasiya Ponosova, Natalia Arutyunyan +4 more·Oct 10, 2025
We experimentally demonstrate a power limiter based on single-walled carbon nanotubes dispersed in a polymer matrix. This simple fiber-optic device permanently increases its attenuation when subjected to 50-mW or higher cw illumination at 1550 nm and...
Algorithmic Temperature Induced by Adopted Regular Universal Turing Machine
Kentaro Imafuku·Oct 10, 2025
We prove that an effective temperature naturally emerges from the algorithmic structure of a regular universal Turing machine (UTM), without introducing any external physical parameter. In particular, the redundancy growth of the machine's wrapper la...
Entangled Photon Pair Generator via Biexciton-Exciton Cascade in Semiconductor Quantum Dots and its Simulation
Simon Sekavčnik, Paul Kohl, Janis Nötzel·Oct 10, 2025
The generation of entangled photon pairs is highly useful for many types of quantum technologies. In this work an entangled photon pair generator that utilises the biexciton-exciton cascade in semiconductor quantum dots is described on a physical, ma...
Strained Donor-Bound Excitons in $^{28}$Si
David A. Vogl, Noah L. Braitsch, Başak Ç. Özcan +3 more·Oct 10, 2025
We present a comprehensive experimental study of the neutral donor to donor-bound exciton transition (D$^0$$\rightarrow\,$D$^0$X) in isotopically enriched $^{28}$Si, focusing on the group-V donors P, As, and Sb under finely tuned uniaxial stress alon...
A quantum-coherent photon--emitter interface in the original telecom band
Marcus Albrechtsen, Severin Krüger, Juan Loredo +10 more·Oct 10, 2025
Quantum dots stand out as the most advanced and versatile light-matter interface available today. Their ability to deliver high-quality, high-rate, and pure photons has set benchmarks that far surpass other emitters. Yet, a critical frontier has rema...
Quantum-Limited Acoustoelectric Amplification in a Piezoelectric-2DEG Heterostructure
Eric Chatterjee, Daniel Soh, Matt Eichenfield·Oct 10, 2025
We provide a quantum mechanical description of phonon amplification in a heterostructure consisting of a two-dimensional electron gas (2DEG) stacked on top of a piezoelectric material. An applied drift voltage effectively creates a population inversi...
QBism and relational interpretation of quantum mechanics from the point of view of a contextual quantum realism (CQR)
Francois-Igor Pris·Oct 10, 2025
A realist interpretation of quantum mechanics is proposed - Contextual Quantum Realism (CQR) - according to which there exists a categorical distinction between the ideal (theory, observation instrument) and the real (quantum physical systems, proper...
Partial Self-Correction in Layer Codes
Dominic J. Williamson·Oct 10, 2025
The storage of large-scale quantum information at finite temperature requires an autonomous and reliable quantum hard drive, also known as a self-correcting quantum memory. It is a long-standing open problem to find a self-correcting quantum memory i...
Nonlinear Heisenberg Limit via Uncertainty Principle in Quantum Metrology
Binke Xia, Jingzheng Huang, Yuxiang Yang +1 more·Oct 10, 2025
The Heisenberg limit is acknowledged as the ultimate precision limit in quantum metrology, traditionally implying that root mean square errors of parameter estimation decrease linearly with the time T of evolution and the number N of quantum gates or...
Breakdown of Non-Bloch Bulk-Boundary Correspondence and Emergent Topology in Floquet Non-Hermitian Systems
Hong Wu, Xue-Min Yang, Hui Liu·Oct 10, 2025
Topological edge states in gaps of non-Hermitian systems are robust due to topological protection. Using the non-Hermitian Floquet Su-Schrieffer-Heeger model, we show that this robustness can break down: edge states may be suppressed by infinitesimal...
The foundational value of quantum computing for classical fluids
Sauro Succi, Claudio Sanavio, Peter Love·Oct 10, 2025
Quantum algorithms for classical physics problems expose new patterns of quantum information flow as compared to the many-body Schrödinger equation. As a result, besides their potential practical applications, they also offer a valuable theoretical a...