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Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Connected correlations in cold atom experiments
Thomas Chalopin, Igor Ferrier-Barbut, Thierry Lahaye +2 more·Nov 1, 2025
The recent development of single-atom-resolved probes has made full counting statistics measurements accessible in quantum gas experiments. This capability provides access to high-order moments of physical observables, from which cumulants, or equiva...
Quantum Machine Unlearning: Foundations, Mechanisms, and Taxonomy
Thanveer Shaik, Xiaohui Tao, Haoran Xie·Nov 1, 2025
Quantum Machine Unlearning has emerged as a foundational challenge at the intersection of quantum information theory privacypreserving computation and trustworthy artificial intelligence This paper advances QMU by establishing a formal framework that...
Universality in Ionic Three-body Systems Near an Ion-atom Feshbach Resonance
Jacek Gȩbala, Michał Tomza, José P. D'Incao·Nov 1, 2025
We calculate bound and scattering properties of a system of two neutral atoms and an ion near an atom-ion Feshbach resonance. Our results indicate that long-range atom-ion interactions lead to significant deviations from universal behavior derived fr...
Hybrid Quantum-Classical Optimization of the Resource Scheduling Problem
Tyler Christeson, Md Habib Ullah, Ali Arabnya +2 more·Nov 1, 2025
Resource scheduling is critical in many industries, especially in power systems. The Unit Commitment problem determines the on/off status and output levels of generators under many constraints. Traditional exact methods, such as mathematical programm...
Optimal transfer of entanglement in oscillator chains in non-Markovian open systems
Da-Wei Luo, Edward Yu, Ting Yu·Oct 31, 2025
We considered the transfer of continuous-variable entangled states in coupled oscillator chains embedded in a generic environment. We demonstrate high-fidelity transfer via optimal control in two configurations - a linear chain and an X-shaped chain....
Local perception operators and classicality: new tools for old tests
Rohit Kishan Ray·Oct 31, 2025
Quantum nonlocality is often judged by violations of Bell-type inequalities for a given state. The computation of such violations is a global task, requiring evaluation of global correlations and subsequent testing against a Bell functional. We ask i...
Quantum-dot single photon source performance with off-resonant pulse preparation schemes
Gavin Crowder, Lora Ramunno, Stephen Hughes·Oct 31, 2025
The preparation of photonic qubits in the excited state is an integral part of the performance of an on-demand single photon source (SPS). Conventional resonant excitation, an excellent approach to maximize the coherence and indistinguishability of t...
Magnetic field in vacuum of quantum spinor matter induced by a cosmic string in three-dimensional space
Yu. I. Pylypchuk, P. O. Nakaznyi, O. V. Barabash +2 more·Oct 31, 2025
A linear magnetic topological defect (cosmic string) is modeled as a magnetic flux-carrying tube that is impenetrable to external spinor matter. The matter field is quantized in the background of this tube, with the most general set of boundary condi...
Closed-loop calculations of electronic structure on a quantum processor and a classical supercomputer at full scale
Tomonori Shirakawa, Javier Robledo-Moreno, Toshinari Itoko +18 more·Oct 31, 2025
Quantum computers must operate in concert with classical computers to deliver on the promise of quantum advantage for practical problems. To achieve that, it is important to understand how quantum and classical computing can interact together, and ho...
Hadronic scattering in (1+1)D SU(2) lattice gauge theory from tensor networks
João Barata, Juan Hormaza, Zhong-Bo Kang +1 more·Oct 31, 2025
We present a first real-time study of hadronic scattering in a (1+1)-dimensional SU(2) lattice gauge theory with fundamental fermions using tensor-network techniques. Working in the gaugeless Hamiltonian formulation -- where the gauge field is exactl...
Simulated outperforms quantum reverse annealing in mean-field models
Christopher L. Baldwin·Oct 31, 2025
Adiabatic reverse annealing (ARA) has been proposed as an improvement to conventional quantum annealing for solving optimization problems, in which one takes advantage of an initial guess at the solution to suppress problematic phase transitions. Her...
Chimeric states of matter: Meissner effect without superconductivity
Michael J Landry, Mingda Li·Oct 31, 2025
Symmetry is central to how we classify phases of matter: solids break spatial translations, superfluids break particle-number conservation, and superconductors "break" gauge symmetry. Mixed anomalies involving higher-form symmetries, however, present...
Rydberg Single Photon Detection for Probing 0.1-10 meV Dark Matter with BREAD
Abhishek Banerjee, Reza Ebadi, Surjeet Rajendran·Oct 31, 2025
We introduce a Rydberg-based single photon detector (SPD) for probing dark matter in the 0.1-10 meV mass range (20 GHz-2 THz). The Rydberg SPD absorbs photons produced and focused by the BREAD dish antenna and trades them for free, detectable electro...
Quantum waste management: Utilizing residual states in quantum information processing
Karol Horodecki, Chirag Srivastava, Leonard Sikorski +1 more·Oct 31, 2025
We propose a framework for quantum residual management, in which states discarded after a resource distillation process are repurposed as inputs for subsequent quantum information tasks. This approach extends conventional quantum resource theories by...
Scalable quantum computation of Quantum Electrodynamics beyond one spatial dimension
Zong-Gang Mou, Bipasha Chakraborty·Oct 31, 2025
In the Hamiltonian formulation, Quantum Field Theory calculations scale exponentially with spatial volume, making real-time simulations intractable on classical computers and motivating quantum computation approaches. In Hamiltonian quantisation, bos...
Teleportation-based squeezer for bosonic cluster states
Michal Matulík, Radim Filip, Petr Marek·Oct 31, 2025
The one-way quantum computation utilizing bosonic modes of light offers unmatched scalability of light modes, and it has seen rapid experimental development recently. Scalability requires robust and low-error gates and measurements. Squeezing gate is...
Probing non-equilibrium physics through the two-body Bell correlator
Abhishek Muhuri, Tanoy Kanti Konar, Leela Ganesh Chandra Lakkaraju +1 more·Oct 31, 2025
Identifying equilibrium criticalities and phases from the dynamics of a system, known as a dynamical quantum phase transition (DQPT), is a challenging task when relying solely on local observables. We exhibit that the experimentally accessible two-bo...
Directional quantum scattering transducer in cooperative Rydberg metasurfaces
Jonas von Milczewski, Kelly Werker Smith, Susanne F. Yelin·Oct 31, 2025
We present a single-photon transduction scheme using 4-wave-mixing and quantum scattering in planar, cooperative Rydberg arrays that is both efficient and highly directional and may allow for terahertz-to-optical transduction. In the 4-wave-mixing sc...
Resolving the Marcus-Rehm-Weller Paradox in Electron Transfer
Ethan Abraham·Oct 31, 2025
Marcus theory famously predicts that electron-transfer rates decrease once the thermodynamic driving force exceeds the reorganization energy. Yet many systems instead exhibit Rehm-Weller kinetics, in which the rate saturates rather than decreases. He...
Resolving the phase of a Dirac topological state via interferometric photoemission
Shiri Gvishi, Ittai Sidilkover, Shaked Rosenstein +8 more·Oct 31, 2025
The electronic wavefunction is at the heart of physical phenomena, defining the frontiers of quantum materials research. While the amplitude of the electron wavefunction in crystals can be measured with state-of-the-art probes in unprecedented resolu...