Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Parallel Proportional Fusion of Spiking Quantum Neural Network for Optimizing Image Classification
Zuyu Xu, Kang Shen, Pengnian Cai +8 more·Apr 1, 2024
The recent emergence of the hybrid quantum-classical neural network (HQCNN) architecture has garnered considerable attention due to the potential advantages associated with integrating quantum principles to enhance various facets of machine learning ...
Review of Distributed Quantum Computing. From single QPU to High Performance Quantum Computing
David Barral, F. J. Cardama, Guillermo Díaz +10 more·Apr 1, 2024
The emerging field of quantum computing has shown it might change how we process information by using the unique principles of quantum mechanics. As researchers continue to push the boundaries of quantum technologies to unprecedented levels, distribu...
Direct detection of quasiparticle tunneling with a charge-sensitive superconducting sensor coupled to a waveguide
Kazi Rafsanjani Amin, Axel Eriksson, Mikael Kervinen +3 more·Apr 1, 2024
Detecting quasiparticle tunneling events in superconducting circuits provides information about the population and dynamics of non-equilibrium quasiparticles. Such events can be detected by monitoring changes in the frequency of an offset-charge-sens...
Quantum Heat Transformers
Arghya Maity, Paranjoy Chaki, Ahana Ghoshal +1 more·Mar 31, 2024
We propose a quantum heat transformer (QHT), a quantum thermodynamic device that modulates temperature gradients between two thermal junctions in quantum systems. Functionally, the QHT is analogous to classical absorption heat transformers in its abi...
Low-loss liquid metal interconnects for superconducting quantum circuits
Zhancheng Yao, M. Sandberg, David W. Abraham +1 more·Mar 31, 2024
Building a modular architecture with superconducting quantum computing chips is one of the means to achieve qubit scalability, allowing the screening, selection, replacement, and integration of individual qubit modules into large quantum systems. How...
Feasibility of first principles molecular dynamics in fault-tolerant quantum computer by quantum phase estimation
I. Kikuchi, Akihito Kikuchi·Mar 31, 2024
This article shows a proof of concept regarding the feasibility of ab initio molecular simulation, wherein the wavefunctions and the positions of nuclei are simultaneously determined by the quantum algorithm, as is realized by the so-called Car-Parri...
Efficient and precise quantum simulation of ultrarelativistic quark-nucleus scattering
Sihao Wu, W. Du, Xingbo Zhao +1 more·Mar 31, 2024
We present an efficient and precise framework to quantum simulate the dynamics of the ultra-relativistic quark-nucleus scattering. This framework employs the eigenbasis of the asymptotic scattering system and implements a compact scheme for encoding ...
Solving reaction dynamics with quantum computing algorithms
Ronen Weiss, Alessandro Baroni, Joseph Carlson +1 more·Mar 30, 2024
The description of quantum many-body dynamics is extremely challenging on classical computers, as it can involve many degrees of freedom. On the other hand, the time evolution of quantum states is a natural application for quantum computers that are ...
Pseudoentanglement Ain't Cheap
Sabee Grewal, Vishnu Iyer, William Kretschmer +1 more·Mar 29, 2024
We show that any pseudoentangled state ensemble with a gap of $t$ bits of entropy requires $\Omega(t)$ non-Clifford gates to prepare. This bound is tight up to polylogarithmic factors if linear-time quantum-secure pseudorandom functions exist. Our re...
QestOptPOVM: An iterative algorithm to find optimal measurements for quantum parameter estimation
Jianchao Zhang, Jun Suzuki·Mar 29, 2024
Quantum parameter estimation holds significant promise for achieving high precision through the utilization of the most informative measurements. While various lower bounds have been developed to assess the best accuracy for estimates, they are not t...
Gate generation for open quantum systems via a monotonic algorithm with time optimization
Paulo Sergio Pereira da Silva, Pierre Rouchon·Mar 29, 2024
We present a monotonic numerical algorithm including time optimization for generating quantum gates for open systems. Such systems are assumed to be governed by Lindblad master equations for the density operators on a large Hilbert-space whereas the ...
Quantum real-time evolution of entanglement and hadronization in jet production: Lessons from the massive Schwinger model
A. Florio, D. Frenklakh, Kazuki Ikeda +4 more·Mar 29, 2024
The possible link between entanglement and thermalization, and the dynamics of hadronization are addressed by studying the real-time response of the massive Schwinger model coupled to external sources. This setup mimics the production and fragmentati...
On the feasibility of quantum teleportation protocols implemented with silicon devices.
Junghee Ryu, Hoon Ryu·Mar 28, 2024
With recent experimental advancements demonstrating high-fidelity universal logic gates and basic programmability, silicon-based spin quantum bits (qubits) have emerged as promising candidates for scalable quantum computing. However, implementation o...
Optimizing Quantum Convolutional Neural Network Architectures for Arbitrary Data Dimension
Changwon Lee, Israel F. Araujo, Dongha Kim +4 more·Mar 28, 2024
Quantum convolutional neural networks (QCNNs) represent a promising approach in quantum machine learning, paving new directions for both quantum and classical data analysis. This approach is particularly attractive due to the absence of the barren pl...
Magic-Induced Computational Separation in Entanglement Theory
Andi Gu, Salvatore F. E. Oliviero, L. Leone·Mar 28, 2024
Entanglement serves as a foundational pillar in quantum information theory, delineating the boundary between what is classical and what is quantum. The common assumption is that a higher degree of entanglement corresponds to a greater degree of “quan...
Quantum Realization of the Finite Element Method
Matthias Deiml, D. Peterseim·Mar 28, 2024
This paper presents a quantum algorithm for the solution of prototypical second-order linear elliptic partial differential equations discretized by $d$-linear finite elements on Cartesian grids of a bounded $d$-dimensional domain. An essential step i...
An Efficient Quantum Algorithm for Linear System Problem in Tensor Format
Zeguan Wu, Sidhant Misra, Tam'as Terlaky +2 more·Mar 28, 2024
Solving linear systems is at the foundation of many algorithms. Recently, quantum linear system algorithms (QLSAs) have attracted great attention since they converge to a solution exponentially faster than classical algorithms in terms of the problem...
Arbitrary quantum circuits on a fully integrated two-qubit computation register for a trapped-ion quantum processor
N. Pulido-Mateo, H. Mendpara, M. Duwe +4 more·Mar 28, 2024
We report on the implementation of arbitrary circuits on a universal two-qubit register that can act as the computational module in a trapped-ion quantum computer based on the quantum charge-coupled device architecture. A universal set of quantum gat...
Lindblad-like quantum tomography for non-Markovian quantum dynamical maps
S. Varona, Markus Muller, A. Bermudez·Mar 28, 2024
We introduce Lindblad-like quantum tomography (LℓQT) as a quantum characterization technique of time-correlated noise in quantum information processors. This approach enables the estimation of time-local master equations, including their possible neg...
Theoretical analysis of chemical reactions using a variational quantum eigensolver method without specifying molecular charge
Soichi Shirai, Takahiro Horiba, H. Hirai·Mar 28, 2024
Quantum chemical calculations have attracted much attention as a practical application of quantum computing. Quantum computers can prepare superpositions of electronic states with various numbers of electrons on qubits. This special feature could be ...