Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum utility-scale error mitigation for quantum quench dynamics in Heisenberg spin chains
Seokwon Choi, Talal Ahmed Chowdhury, Kwangmin Yu·Jun 24, 2025
We implement a quantum error mitigation method termed self-mitigation, which is comparable to zero-noise extrapolation, at large scales to achieve quantum utility on near-term, noisy quantum computers. We investigate the effectiveness of several quan...
Noncontextual Pauli Hamiltonians
Alexis Ralli, Tim Weaving, Peter J. Love·Jun 24, 2025
Contextuality is a key feature of quantum mechanics, and identification of noncontextual subtheories of quantum mechanics is of both fundamental and practical importance. Recently, noncontextual Pauli Hamiltonians have been defined in the setting of ...
Quantum-Classical Computing for Time-Dependent Ion-Atom Collision Dynamics: Applications to Charge Transfer Cross Section Simulations
Minchen Qiao, Yu-Xi Liu·Jun 24, 2025
The simulation of ion-atom collisions remains a formidable challenge due to the complex interplay between electronic and nuclear degrees of freedom. We present a hybrid quantum-classical computing framework for simulating time-dependent ion-atom coll...
ReBoot: Encrypted Training of Deep Neural Networks with CKKS Bootstrapping
Alberto Pirillo, Luca Colombo·Jun 24, 2025
Growing concerns over data privacy underscore the need for deep learning methods capable of processing sensitive information without compromising confidentiality. Among privacy-enhancing technologies, Homomorphic Encryption (HE) stands out by offerin...
Isoprobability Models of Qubit Dynamics: Demonstration via Time-Dependent Phase Control on IBM Quantum
Ivo S. Mihov, N. Vitanov·Jun 24, 2025
Efficient quantum control is a cornerstone for the advancement of quantum technologies, from computation to sensing and communications. Several approaches in quantum control, e.g. optimal control and inverse engineering, use pulse amplitude and frequ...
Pulsed laser attack at 1061 nm potentially compromises quantum key distribution
Anastasiya Ponosova, Irina Zhluktova, Daria Ruzhitskaya +6 more·Jun 23, 2025
Quantum key distribution systems offer cryptographic security, provided that all their components are thoroughly characterised. However, certain components might be vulnerable to a laser-damage attack, particularly when attacked at previously unteste...
Nonstabilizerness and Error Resilience in Noisy Quantum Circuits
Fabian Ballar Trigueros, José Antonio Marín Guzmán·Jun 23, 2025
We investigate how noise impacts nonstabilizerness - a key resource for quantum advantage - in many-body qubit systems. While noise typically degrades quantum resources, we show that amplitude damping, a nonunital channel, can generate or enhance mag...
Local classical correlations between physical electrons in Hubbard systems
Gabriele Bellomia, Adriano Amaricci, Massimo Capone·Jun 23, 2025
We demonstrate that the local nonfreeness, an unbiased measure of correlation between electrons at a single lattice site, can be computed as the mutual information between local natural spin orbitals. This leads us to prove a general result: local el...
Classical and Quantum Resources in Perfect Teleportation
Zhu Dian, Fulin Zhang, Jingling Chen·Jun 23, 2025
We propose a teleportation protocol that enables perfect transmission of a qubit using a partially entangled two-qutrit quantum channel. Within our scheme, we analyze the relationship among the three key ingredients of teleportation: (i) the quantum ...
Residual gauge theory for quanta of surface plasmons
Ken-ichi Sasaki·Jun 23, 2025
We develop a gauge-theoretical framework to investigate the quanta of surface plasmons. Our formulation, based on quantum electrodynamics, highlights the importance of residual gauge symmetry. We emphasize that residual gauge symmetry, which imposes ...
Modulator-Assisted Zeno Control of Energy Transfer in Quantum Batteries
Songbo Xie, Manas Sajjan, Ashok Ajoy +1 more·Jun 23, 2025
Efficient operation of quantum batteries requires not only fast energy transfer but also the ability to halt the charging process to prevent reverse flow. Existing approaches typically rely on direct control of the charger-battery interaction, which ...
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...
Systematic improvement of the quantum approximate optimisation ansatz for combinatorial optimisation using quantum subspace expansion
Yann Beaujeault-Taudière·Jun 23, 2025
The quantum approximate optimisation ansatz (QAOA) is one of the flagship algorithms used to tackle combinatorial optimisation on graphs problems using a quantum computer, and is considered a strong candidate for early fault-tolerant advantage. In th...
Reducing complexity of shadow process tomography with generalized measurements
Haigang Wang, Kan He·Jun 23, 2025
Quantum process tomography (QPT) is crucial for advancing quantum technologies, including quantum computers, quantum networks and quantum sensors. Shadow process tomography (SPT) utilizes the Choi isomorphism to map QPT to shadow state tomography (SS...
Bloch Vector Assertions for Debugging Quantum Programs
Noah Oldfield, Christoph Laaber, Shaukat Ali·Jun 23, 2025
Quantum programs must be reliable to ensure trustworthy results, yet debugging them is notoriously challenging due to quantum-specific faults like gate misimplementations and hardware noise, as well as their inherently probabilistic nature. Assertion...
Quantum-Classical Hybrid Quantized Neural Network
Wenxin Li, Chuan Wang, Hongdong Zhu +4 more·Jun 23, 2025
In this work, we introduce a novel Quadratic Binary Optimization (QBO) framework for training a quantized neural network. The framework enables the use of arbitrary activation and loss functions through spline interpolation, while Forward Interval Pr...
Existence of a robust optimal control process for efficient measurements in a two-qubit system
R. Rodríguez, Nam Nguyen, Elizabeth Behrman +2 more·Jun 23, 2025
The verification of quantum entanglement is essential for quality control in quantum communication. In this work, we propose an efficient protocol to directly verify the two-qubit entanglement of a known target state through a single expectation valu...
Stability Analysis of Three Coupled Kerr Oscillators: Implications for Quantum Computing
K. Chmielewski, K. Grygiel, K. Bartkiewicz·Jun 23, 2025
We investigate the classical dynamics of optical nonlinear Kerr couplers, focusing on their potential relevance to quantum computing applications. The system consists of three Kerr-type nonlinear oscillators arranged in two configurations: a triangul...
Hardware-efficient quantum phase estimation via local control
Benjamin F. Schiffer, Dominik S. Wild, N. Maskara +2 more·Jun 23, 2025
Quantum phase estimation plays a central role in quantum simulation as it enables the study of spectral properties of many-body quantum systems. Most variants of the phase estimation algorithm require the application of the global unitary evolution c...
Entanglement growth and information capacity in a quasiperiodic system with a single-particle mobility edge
Yuqi Qing, Yu-Qin Chen, Shi-Xin Zhang·Jun 22, 2025
We investigate the quantum dynamics of a one-dimensional quasiperiodic system featuring a single-particle mobility edge (SPME), described by the generalized Aubry-André (GAA) model. This model offers a unique platform to study the consequences of coe...