Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Iterative Quantum Feature Maps
Nasa Matsumoto, Quoc Hoan Tran, Koki Chinzei +2 more·Jun 24, 2025
Quantum machine learning models that leverage quantum circuits as quantum feature maps (QFMs) are recognized for their enhanced expressive power in learning tasks. Such models have demonstrated rigorous end-to-end quantum speedups for specific famili...
Error recovery protocols within metastable Decoherence-Free Subspaces
T. Botzung, Eliana Fiorelli·Jun 24, 2025
Open quantum systems governed by quantum master equations can exhibit quantum metastability, where decoherence-free subspaces (DFS) remain approximately invariant for long transient times before relaxing to a unique steady state. In this work, we exp...
Robust Control of High-dimensional Quantum Systems against Coherent and Incoherent Errors
Yidian Fan, R. Wu·Jun 23, 2025
Toward scalable quantum computing, the control of quantum systems needs to be robust against both coherent errors induced by parametric uncertainties and incoherent errors induced by environmental decoherence. This poses significant challenges for hi...
Correlated Error Bursts in a Gap-Engineered Superconducting Qubit Array
V. Kurilovich, G. Roberts, L. S. Martin +17 more·Jun 22, 2025
One of the roadblocks towards the implementation of a fault-tolerant superconducting quantum processor is impacts of ionizing radiation with the qubit substrate. Such impacts temporarily elevate the density of quasiparticles (QPs) across the device, ...
Radiation-Induced Fault Detection in Superconducting Quantum Devices
Marzio Vallero, Gioele Casagranda, Flavio Vella +1 more·Jun 20, 2025
The quest for universal superconducting quantum computing is hindered by noise and errors. It has been proven that Quantum Error Correction (QEC) codes will lay at the foundation of fault tolerant quantum computing. However, cosmic-ray induced correl...
Optimizing superconducting Nb film cavities by mitigating medium-field Q-slope through annealing
B. Abdisatarov, G. Eremeev, H. Elsayed-Ali +10 more·Jun 19, 2025
Niobium films are of interest in applications in various superconducting devices, such as superconducting radiofrequency cavities for particle accelerators and superconducting qubits for quantum computing. In this study, we address the persistent med...
Detectability of post-Newtonian classical and quantum gravity via quantum clock interferometry
Eyuri Wakakuwa·Jun 17, 2025
Understanding physical phenomena at the intersection of quantum mechanics and general relativity remains a major challenge in modern physics. While various experimental approaches have been proposed to probe quantum systems in curved spacetime, most ...
Comparing a Few Qubit Systems for Superconducting Hardware Compatibility and Circuit Design Sensitivity in Qiskit
Hillol Biswas·Jun 17, 2025
The development of complex circuits for practical applications in the current quantum computing ecosystem is based on basic primitives such as Bell states, which provide superposition, entanglement, and coherence. The range of domain-specific quantum...
Purely quantum memory in closed systems observed via imperfect measurements
Jorge Tabanera-Bravo, Aljaž Godec·Jun 16, 2025
The detection and quantification of non-Markovianity, a.k.a. memory, in quantum systems is a central problem in the theory of open quantum systems. There memory is as a result of the interaction between the system and its environment. Little is known...
Ergodic Theory of Inhomogeneous Quantum Processes
Abdessatar Souissi·Jun 14, 2025
This work develops a rigorous framework for analysing ergodicity and mixing in time-inhomogeneous quantum dynamics. It considers quantum evolutions generated by sequences of quantum channels and examines in detail the relationship between the forward...
Ab initio polaritonic chemistry on diverse quantum computing platforms: Ansatz circuit design for qubit, qudit, and hybrid qubit-qumode architectures
Even Chiari, W. Makhlouf, Lucie Pepe +5 more·Jun 14, 2025
Trying to export ab initio polaritonic chemistry onto emerging quantum computers raises fundamental questions. A central one is how to efficiently represent both fermionic and bosonic degrees of freedom on the same platform, in order to develop compu...
Quantum Resource Assay for the Grid-Based Simulation of the Photodynamics of Pyrazine
Xiaoning Feng, Hans Hon Sang Chan, David P. Tew·Jun 10, 2025
We establish and analyse the performance and resource requirements of an end-to-end fault-tolerant quantum algorithm for computing the absorption spectrum and population dynamics of photoexcited pyrazine. The quantum circuit construction consists of ...
Quantum Simulation of Noisy Quantum Networks
Ferran Riera-Sàbat, Jorge Miguel-Ramiro, W. Dur·Jun 10, 2025
Complex quantum networks are not only hard to establish, but also difficult to simulate due to the exponentially growing state space and noise-induced imperfections. In this work, we propose an alternative approach that leverage quantum computers and...
Signatures of Environment-Induced Quantum Synchronization Transitions via Two-body Dissipator Engineering
Xingli Li, Yan Li, Yangqian Yan·Jun 9, 2025
Metronome synchronization and the transition between the in-phase and anti-phase synchronization have been observed in classical systems. We demonstrate the quantum analog of this phenomenon in a two-qubit system coupled to a common environment. Trac...
Tilt-Induced Localization in Interacting Bose-Einstein Condensates for Quantum Sensing
Argha Debnath, Mariusz Gajda, Debraj Rakshit·Jun 6, 2025
We investigate localization transitions in interacting Bose-Einstein condensates (BECs) confined in tilted optical lattices, focusing on both the continuum limit accessed via shallow lattice depths and the tight-binding limit realized in the deep lat...
Pathfinding Quantum Simulations of Neutrinoless Double-Beta Decay
Ivan A. Chernyshev, Roland C. Farrell, Marc Illa +10 more·Jun 6, 2025
We present results from co-designed quantum simulations of the neutrinoless double-beta decay of a simple nucleus in 1+1D quantum chromodynamics using IonQ's Forte-generation trapped-ion quantum computers. Electrons, neutrinos, and up and down quarks...
Low-loss telecom-band nanofiber cavity for interfacing Yb atomic qubits.
Seitaro Horikawa, Shinya Kato, Ryotaro Inoue +3 more·Jun 6, 2025
We demonstrate the fabrication of an optical nanofiber cavity designed for efficient interface with ytterbium (Yb) atoms at telecom-wavelength transitions. Replacing the conventional hydrogen-oxygen flame with a deuterium-oxygen flame in the heat-and...
Tunable spin-phonon polarons in a chiral molecular qubit framework
Aimei Zhou, Ruihao Bi, Zhenghan Zhang +22 more·Jun 5, 2025
Chiral structures that produce asymmetric spin-phonon coupling can theoretically generate spin-phonon polarons -- quasiparticles exhibiting non-degenerate spin states with phonon displacements. These quasiparticles are speculated to be the origin of ...
Full characterization of measurement-induced transitions of a superconducting qubit
T. Connolly, P. Kurilovich, V. D. Kurilovich +12 more·Jun 5, 2025
Repeated quantum non-demolition measurement is a cornerstone of quantum error correction protocols. In superconducting qubits, the speed of dispersive state readout can be enhanced by increasing the power of the readout tone. However, such an increas...
Superconducting integrated on-demand quantum memory with microwave pulse preservation
Aleksei R. Matanin, Nikita S. Smirnov, Anton I. Ivanov +8 more·Jun 3, 2025
Microwave quantum memory represents a critical component for quantum radars and resource-efficient approaches to quantum error correction. Superconducting microwave resonators provide highly efficient storage, long coherence times, on-demand reading ...