Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Uniform matrix product states with a boundary
Marta Florido-Llinàs, Álvaro M. Alhambra, David Pérez-García +1 more·Dec 12, 2025
Canonical forms are central to the analytical understanding of tensor network states, underpinning key results such as the complete classification of one-dimensional symmetry-protected topological phases within the matrix product state (MPS) framewor...
Holographic Representation of One-Dimensional Many-Body Quantum States via Isometric Tensor Networks
Kaito Kobayashi, Benjamin Sappler, Frank Pollmann·Dec 12, 2025
Isometric tensor network states (isoTNS) allow for efficient and accurate simulations of higher-dimensional quantum systems by enforcing an isometric structure. We bring this idea back to one dimension by introducing a holographic isoTNS ansatz: a (1...
Coherently synchronized oscillations in many-body localization
Zi-Jian Li, Yi-Ting Tu, Sankar Das Sarma·Dec 12, 2025
We find an unexpected phenomenon of coherently synchronized oscillations in a mirror-symmetric many-body localized system. A synchronization transition of the spin oscillations is found by changing the spin-spin interactions. To understand this pheno...
A Room-Temperature Extreme High Vacuum System for Trapped-Ion Quantum Information Processing
Lewis Hahn, Nikhil Kotibhaskar, Fabien Lefebvre +4 more·Dec 12, 2025
We present a room-temperature Extreme High Vacuum (XHV) system engineered to support the long-duration operation of a trapped-ion quantum processor. Background-gas collisions impose limitations on trapped-ion performance and scalability by interrupti...
Exact and Tunable Quantum Krylov Subspaces via Unitary Decomposition
Ayush Asthana·Dec 12, 2025
Quantum Krylov subspace methods can extract ground and excited states by diagonalizing the Hamiltonian in a compact variational space. In practice, these spaces are almost always generated by real or imaginary time evolution, forcing a timestep trade...
A Vlasov-Bohm approach to Quantum Mechanics for statistical systems
Pedro Luis Grande, Raul Carlos Fadanelli, Maarten Vos·Dec 12, 2025
Quantum mechanics is the most successful theory to describe microscopic phenomena. It was derived in different ways over the past 100 years by Heisenberg, Schrödinger, and Feynman. At the same time, other interpretations have been suggested, includin...
Learning Minimal Representations of Fermionic Ground States
Felix Frohnert, Emiel Koridon, Stefano Polla·Dec 12, 2025
We introduce an unsupervised machine-learning framework that discovers optimally compressed representations of quantum many-body ground states. Using an autoencoder neural network architecture on data from $L$-site Fermi-Hubbard models, we identify m...
Computing the molecular ground state energy in a restricted active space using quantum annealing
Stefano Bruni, Enrico Prati·Dec 12, 2025
Calculating the molecular ground-state energy is a central challenge in computational chemistry. Conventional methods such as the Complete Active Space Configuration Interaction scale exponentially with molecular size, limiting their applicability to...
CNOT gates in inductively coupled multi-fluxonium systems
Valeria Díaz Moreno, Nikola D. Dimitrov, Vladimir E. Manucharyan +1 more·Dec 12, 2025
High-fidelity two-qubit gates have been demonstrated in systems of two fluxonium qubits; however, the realization of scalable quantum processors requires maintaining low error rates in substantially larger architectures. In this work, we analyze a sy...
Entanglement generation in qubit-ADAPT-VQE through four-qubit algebraic classification
Diego Tancara, Herbert Díaz-Moraga, Vicente Sepúlveda-Trivelli +1 more·Dec 12, 2025
While variational quantum algorithms are among the most promising approaches for the noisy intermediate-scale quantum (NISQ) era, their scalability is often hindered by the barren plateau problem. Among the proposals that have demonstrated robustness...
Qubits in second quantisation in fermionic simulators
Ahana Ghoshal, Carlos de Gois, Kiara Hansenne +2 more·Dec 12, 2025
Simulating many-body fermionic systems in conventional qubit-based quantum computers poses significant challenges due to the overheads associated with the encoding of fermionic statistics in qubits, leading to the proposal of native fermionic simulat...
Real-Time Polarization Control for Satellite QKD with Liquid-Crystal Beacon Stabilization
Ondrej Klicnik, Alessandro Zannotti, Yannick Folwill +3 more·Dec 12, 2025
Polarization instability is a critical challenge for polarization-entangled satellite quantum key distribution (QKD), where atmospheric effects and platform motion continuously distort photon polarization. To maintain entanglement fidelity, these tra...
Thermal interaction-free ghost imaging
Shun Li, Jing-Yang Xiao Feng, Xiu-Qing Yang +4 more·Dec 12, 2025
We propose an interaction-free ghost imaging scheme based on a thermal light source. By utilizing the quantum Zeno-like effect, our approach significantly reduces the light dose absorbed by the sample, thereby effectively preventing sample damage ind...
Spectral side channels in quantum key distribution under laser damage
Binwu Gao, Junxuan Liu, Ekaterina Borisova +8 more·Dec 12, 2025
In the transmitter of a quantum key distribution (QKD) system, a dense wavelength-division multiplexer (DWDM) is typically used to combine quantum and synchronization signals and is directly connected to the quantum channel. As a result, it becomes t...
Bloch oscillation in a Floquet engineering quadratic potential system
J. Cao, H. Shen, R. Wang +1 more·Dec 12, 2025
We investigate the quantum dynamics of a one-dimensional tight-binding lattice driven by a spatially quadratic and time-periodic potential. Both Hermitian ($J_1 = J_2$) and non-Hermitian ($J_1 \neq J_2$) hopping regimes are analyzed. Within the frame...
Optimal Control of Coupled Sensor-Ancilla Qubits for Multiparameter Estimation
Ayumi Kanamoto, Takuya Isogawa, Shunsuke Nishimura +2 more·Dec 12, 2025
Designing optimal control for multiparameter quantum sensing is essential for approaching the ultimate precision limits. However, analytical solutions are generally available only for simple systems, while realistic scenarios often involve coupled qu...
Hardware Efficient Quantum Kernels Using Multimode Bulk Acoustic Resonators
Collin C. D. Frink, Chaoyang Ti, Stephen K. Gray +2 more·Dec 12, 2025
The kernel trick is a widely applicable technique in machine learning domains that maps datasets that are difficult to classify into a computationally friendly feature space. As the dimension of the dataset scales, these kernel calculations can quick...
Tailored Error Mitigation for Single-Qubit Magnetometry
Miriam Resch, Dennis Herb, Mirko Rossini +2 more·Dec 12, 2025
Quantum sensing is an emerging field with the potential to outperform classical methods in both precision and spatial resolution. However, the sensitivity of the underlying quantum platform also makes the sensors highly susceptible to their environme...
Nuclear magnetic resonance on a single atom with a local probe
Hester G. Vennema, Cristina Mier, Evert W. Stolte +3 more·Dec 12, 2025
The nuclear spin is a prime candidate for quantum information applications due to its weak coupling to the environment and inherently long coherence times. However, this weak coupling also challenges the addressability of the nuclear spin. Here we de...
Shot-to-shot displacement noise in state-expansion protocols with inverted potentials
Giuseppe Paolo Seta, Louisiane Devaud, Lorenzo Dania +2 more·Dec 12, 2025
Optically levitated nanoparticles are promising candidates for the generation of macroscopic quantum states of mechanical motion. Protocols to generate such states expose the particle to a succession of different potentials. Limited reproducibility o...