Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Annual-modulation fingerprint of the axion wind induced sideband triplet in quantum dot spin qubit sensors
Xiangjun Tan, Zhanning Wang·Nov 5, 2025
We propose a phase-coherent, narrowband magnetometer for searching couplings between axions or axion-like particles (ALPs) and electron spins, using gate-defined silicon quantum-dot spin qubits. With repeated Ramsey echo sequences and dispersive read...
Dynamical discontinuities in repeated weak measurements revealed by complex weak values
Lorena Ballesteros Ferraz·Nov 5, 2025
This work demonstrates that repeated weak measurements together with post-selection can produce sharp dynamical discontinuities in meter observables, even in minimal quantum systems. The discontinuous behavior is governed by the polar angle of the po...
Isolated quantum-state networks in ultracold molecules
Tom R. Hepworth, Simon L. Cornish, Philip D. Gregory·Nov 5, 2025
Precise control over rotational angular momentum is at the heart of recent advances in quantum chemistry, quantum simulation, and quantum computation with ultracold bialkali molecules. Each rotational state comprises a rich manifold of hyperfine stat...
Quantum phase transition in the anisotropic Rabi model induced by parametric amplification
Yuan Qiu, Ke-Xiong Yan, Jun-Hao Lin +3 more·Nov 5, 2025
In this manuscript, we analyze the mechanism of the superradiant phase transition in the anisotropic Rabi model under the classical oscillator limit using the pattern picture. By expanding the anisotropic Rabi model Hamiltonian in operator space, we ...
Heralded Induced-Coherence Interferometry in a Noisy Environment
L. Theerthagiri, Balakrishnan Viswanathan, C. M. Chandrashekar·Nov 5, 2025
Induced-coherence interferometry, first introduced in the Zou-Wang-Mandel (ZWM) setup, enables retrieval of object information from the interference pattern of light that never interacted with the object. This scheme relies on two identically correla...
The simple reason why classical gravity can entangle
Andrea Di Biagio·Nov 4, 2025
Ever since gravity-induced entanglement (GIE) experiments have been proposed as a witness of the quantum nature of gravity, more and more theories of classical gravity coupled to quantum matter have been shown to predict GIE, despite the existence of...
Haldane-Inspired Generalized Statistics
M. H. Naghizadeh Ardabili, Omid Yahyayi Monem, Morteza Nattagh Najafi +1 more·Nov 4, 2025
We propose and study a generalized quantum statistical framework, referred to as \emph{alpha statistics}, that continuously interpolates between Bose--Einstein and Fermi--Dirac statistics and naturally extends into the hyperbosonic regime for $α< 0$....
Interaction-Induced Quasicrystalline Order: Emergence of Quasi-Solid and Quasi-Supersolid Phases
Chao Zhang·Nov 4, 2025
Deterministic quasiperiodicity in quantum systems has long been associated with localization, criticality, or glassy behavior, and has therefore been believed to suppress long-range order rather than stabilize it. Here we demonstrate the opposite: qu...
Superconducting pairing correlations on a trapped-ion quantum computer
Etienne Granet, Sheng-Hsuan Lin, Kevin Hémery +31 more·Nov 3, 2025
The Fermi-Hubbard model is the starting point for the simulation of many strongly correlated materials, including high-temperature superconductors, whose modelling is a key motivation for the construction of quantum simulation and computing devices. ...
All-optical turbulence mitigation for free-space quantum key distribution using stimulated parametric down-conversion
Aaron A. Aguilar-Cardoso, Cheng Li, Tobey J. B. Luck +4 more·Nov 3, 2025
In this work, we propose and demonstrate a turbulence-resilient scheme for free-space quantum communication. By leveraging the phase conjugation property of stimulated parametric down-conversion, our scheme enables all-optical dynamic correction of s...
Light-induced Frequency Shift and Relaxation of Ground-State 3He via Metastability-Exchange Collisions
L. Y. Wu, H. Yan·Nov 3, 2025
Metastability-exchange collisions (MECs) lie at the heart of metastability-exchange optical pumping (MEOP) in 3He, enabling the transfer of polarization from the metastable state to the ground state, as well as the optical detection of nuclear magnet...
High-fidelity all-microwave CZ gate with partial erasure-error detection via a transmon coupler
Shotaro Shirai, Shinichi Inoue, Shuhei Tamate +3 more·Nov 3, 2025
Entangling gates between neighboring physical qubits are essential for quantum error correction. Implementing them in an all-microwave manner simplifies signal routing and control apparatus of superconducting quantum processors. We propose and experi...
Optimizing magnetic coupling in lumped element superconducting resonators for molecular spin qubits
Marcos Rubín-Osanz, David Rodriguez, Ignacio Gimeno +18 more·Nov 2, 2025
We engineer lumped-element superconducting resonators that maximize magnetic coupling to molecular spin qubits, achieving record single-spin couplings up to $100$ kHz and collective couplings exceeding $10$ MHz. The resonators interact with PTMr orga...
Quantum dynamics in lattices in presence of bulk dephasing and a localized source
Tamoghna Ray, Katha Ganguly, Dario Poletti +2 more·Nov 1, 2025
The aim of this work is to study the dynamics of quantum systems subjected to a localized fermionic source in the presence of bulk dephasing. We consider two classes of one-dimensional lattice systems: (i) a non-interacting lattice with nearest-neigh...
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...
Zitterbewegung Effect and Quantum Geometry in Non-Hermitian Exciton-Polariton Systems
Yow-Ming Robin Hu, Elena A. Ostrovskaya, Eliezer Estrecho·Oct 31, 2025
In this work, we analytically derive a semi-classical equation of motion describing the zitterbewegung effects arising in the dynamics of wavepackets in non-Hermitian systems. In Hermitian non-relativistic quantum systems, the zitterbewegung effects ...
Wavefront Curvature and Transverse Atomic Motion in Time-Resolved Atom Interferometry: Impact and Mitigation
Noam Mouelle, Jeremiah Mitchell, Valerie Gibson +1 more·Oct 30, 2025
Time-resolved atom interferometry, as employed in applications such as gravitational wave detection and searches for ultra-light dark matter, requires precise control over systematic effects. In this work, we investigate phase noise arising from shot...
Strong Kantorovich duality for quantum optimal transport with generic cost and optimal couplings on quantum bits
Gergely Bunth, József Pitrik, Tamás Titkos +1 more·Oct 30, 2025
We prove Kantorovich duality for a linearized version of a recently proposed non-quadratic quantum optimal transport problem, where quantum channels realize the transport. As an application, we determine optimal solutions of both the primal and the d...
Weak-Memory Dynamics in Discrete Time
Hugues Meyer, Kay Brandner·Oct 30, 2025
Discrete dynamics arise naturally in systems with broken temporal translation symmetry and are typically described by first-order recurrence relations representing classical or quantum Markov chains. When memory effects induced by hidden degrees of f...