Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
HiQ-Lip: A Hierarchical Quantum-Classical Method for Global Lipschitz Constant Estimation of ReLU Networks
Haoqi He, Yan Xiao, Wenzhi Xu +3 more·Mar 20, 2025
Estimating the global Lipschitz constant of neural networks is crucial for understanding and improving their robustness and generalization capabilities. However, precise calculations are NP-hard, and current semidefinite programming (SDP) methods fac...
RESFL: An Uncertainty-Aware Framework for Responsible Federated Learning by Balancing Privacy, Fairness and Utility
Dawood Wasif, Terrence J. Moore, Jin-Hee Cho·Mar 20, 2025
Federated Learning (FL) has gained prominence in machine learning applications across critical domains by enabling collaborative model training without centralized data aggregation. However, FL frameworks that protect privacy often sacrifice fairness...
Quantum Metrology of Newton's Constant with Levitated Mechanical Systems
Francis J. Headley, Alessio Belenchia, Mauro Paternostro +1 more·Mar 20, 2025
Newton's constant is the least well-measured among the fundamental constants of Nature, and, indeed, its accurate measurement has long served an experimental challenge. Levitated mechanical systems are attracting growing attention for their promising...
Quantum Chebyshev Probabilistic Models for Fragmentation Functions
Jorge J. Martínez de Lejarza, Hsin-Yu Wu, Oleksandr Kyriienko +2 more·Mar 20, 2025
Quantum generative modeling is emerging as a powerful tool for advancing data analysis in high-energy physics, where complex multivariate distributions are common. However, efficiently learning and sampling these distributions remains challenging. We...
Reducing T Gates with Unitary Synthesis
Tianyi Hao, Amanda Xu, Swamit Tannu·Mar 20, 2025
Quantum error correction is essential for achieving practical quantum computing but has a significant computational overhead. Among fault-tolerant (FT) gate operations, non-Clifford gates, such as $T$, are particularly expensive due to their reliance...
Gauging Modulated Symmetries via Multiple Gauge Symmetry Operators and Adaptive Quantum Circuits
Jintae Kim, Jong Yeon Lee, Jung Hoon Han·Mar 20, 2025
We introduce an extended framework for the simultaneous gauging of modulated symmetries in $(d+1)$ dimensions, employing {\it multiple} gauge symmetry operators whose corresponding gauging procedures must be carried out simultaneously. Simultaneous g...
Rapid quantum ground state preparation via dissipative dynamics
Yongtao Zhan, Zhiyan Ding, Jakob Huhn +4 more·Mar 20, 2025
Inspired by natural cooling processes, dissipation has become a promising approach for preparing low-energy states of quantum systems. However, the potential of dissipative protocols remains unclear beyond certain commuting Hamiltonians. This work pr...
Reduced density matrix approach to one-dimensional ultracold bosonic systems
Mitchell J. Knight, Harry M. Quiney, Andy M. Martin·Mar 20, 2025
The variational determination of the two-boson reduced density matrix is described for a one-dimensional system of $N$ (where $N$ ranges from $2$ to $10^4$) harmonically trapped bosons interacting via contact interaction. The ground-state energies ar...
A theory of quasiballistic spin transport
Jeffrey Z. Song, Hyunsoo Ha, Wen Wei Ho +1 more·Mar 20, 2025
A recent work [Mierzejewski et al., Phys. Rev. B 107, 045134 (2023)] observed "quasiballistic spin transport" - long-lived and transiently ballistic modes of the magnetization density - in numerical simulations of infinite-temperature XXZ chains with...
Tight-binding energy-phase calculation for topological Josephson junction nanowire architecture
Adrian D. Scheppe, Michael V. Pak·Mar 20, 2025
The current state of Quantum computing (QC) is extremely optimistic, and we are at a point where researchers have produced highly sophisticated quantum algorithms to address far reaching problems. However, it is equally apparent that the noisy quantu...
Multimode Qubit-Conditional Operations via Generalized Cross-Resonance
M. Ayyash·Mar 20, 2025
We present a general framework for generating single- and multimode qubit-conditional operations by extending cross-resonant driving to a generalized multimode scheme. This includes single-mode conditional displacements and squeezing induced by one- ...
Constant-Depth Quantum Circuits for Arbitrary Quantum State Preparation via Measurement and Feedback
Wei Zi, Junhong Nie, Xiaoming Sun·Mar 20, 2025
The optimization of quantum circuit depth is crucial for practical quantum computing, as limited coherence times and error-prone operations constrain executable algorithms. Measurement and feedback operations are fundamental in quantum computing (e.g...
Quantum Characterization, Verification, and Validation
R. Blume-Kohout, Timothy Proctor, Kevin Young·Mar 20, 2025
Quantum characterization, verification, and validation (QCVV) is a set of techniques to probe, describe, and assess the behavior of quantum bits (qubits), quantum information-processing registers, and quantum computers. QCVV protocols probe and descr...
Probabilistic Quantum SVM Training on Ising Machine
Haoqi He, Yan Xiao·Mar 20, 2025
Quantum computing holds significant potential to accelerate machine learning algorithms, especially in solving optimization problems like those encountered in Support Vector Machine (SVM) training. However, current QUBO-based Quantum SVM (QSVM) metho...
A Scalable and Robust Compilation Framework for Emitter-Photonic Graph State
Xiangyu Ren, Yuexun Huang, Zhiding Liang +1 more·Mar 20, 2025
Quantum graph states are critical resources for various quantum algorithms, and also determine essential interconnections in distributed quantum computing. There are two schemes for generating graph states - probabilistic scheme and deterministic sch...
Explaining Robust Quantum Metrology by Counting Codewords
Oskar Novak, Narayanan Rengaswamy·Mar 19, 2025
Quantum sensing holds great promise for high-precision magnetic field measurements. However, its performance is significantly limited by noise. The investigation of active quantum error correction to address this noise led to the Hamiltonian-Not-in-L...
The classical limit of quantum mechanics through coarse-grained measurements
Fatemeh Bibak, Carlo Cepollaro, Nicolás Medina Sánchez +2 more·Mar 19, 2025
Understanding how classical physics emerges from quantum mechanics remains a central problem in the foundations of physics. Here we derive a classical limit from finite-resolution measurements, modeled by continuous coarse-grained POVMs. When the res...
The source of hardware-tailored codes and coding phases
Gaurav Gyawali, Henry Shackleton, Zhu-Xi Luo +1 more·Mar 19, 2025
A central challenge in quantum error correction is identifying powerful quantum codes tailored to specific hardware and determining their error thresholds above which quantum information is unprotected. This problem is hard because we cannot determin...
LuGo: an Enhanced Quantum Phase Estimation Implementation
Chao Lu, Muralikrishnan Gopalakrishanan Meena, Kalyana Chakravarthi Gottiparthi·Mar 19, 2025
Quantum Phase Estimation (QPE) is a cardinal algorithm in quantum computing that plays a crucial role in various applications, including cryptography, molecular simulation, and solving systems of linear equations. However, the standard implementation...
On physicality of electromagnetic potential from causal structure of flux quantization
Konrad Schlichtholz, Marcin Markiewicz·Mar 19, 2025
Recent work by Vaidman [Phys. Rev. A 86,040101 (2012)] showed that Aharonov-Bohm effect can be explained in terms of local fields, thus effectively restating an old problem of physicality of potentials. In this work, we propose an argument demonstrat...