Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,527 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum variational solving of nonlinear and multidimensional partial differential equations
Abhijat Sarma, Thomas W. Watts, Mudassir Moosa +2 more·Nov 2, 2023
A variational quantum algorithm for numerically solving partial differential equations (PDEs) on a quantum computer was proposed by Lubasch et al. In this paper, we generalize the method introduced by Lubasch et al. to cover a broader class of nonlin...
Echo-evolution data generation for quantum error mitigation via neural networks
Danila Babukhin·Nov 1, 2023
Neural networks provide a prospective tool for error mitigation in quantum simulation of physical systems. However, we need both noisy and noise-free data to train neural networks to mitigate errors in quantum computing results. Here, we propose a ph...
Fast elementary gates for universal quantum computation with Kerr parametric oscillator qubits
T. Kanao, Hayato Goto·Oct 31, 2023
Kerr parametric oscillators (KPOs) can stabilize the superpositions of coherent states, which can be utilized as qubits, and are promising candidates for realizing hardware-efficient quantum computers. Although elementary gates for universal quantum ...
Observing Quantum Measurement Collapse as a Learnability Phase Transition
Utkarsh Agrawal, Javier Lopez-Piqueres, Romain Vasseur +2 more·Oct 31, 2023
During a quantum measurement, superpositions of states with different observable properties probabilistically collapse into one with a sharp value of the measured observable. In macroscopic quantum systems, this collapse arises via a continuous measu...
Gibbs state sampling via cluster expansions
N. Eassa, Mahmoud M. A. Moustafa, Arnab Banerjee +1 more·Oct 31, 2023
Gibbs states (i.e., thermal states) can be used for several applications such as quantum simulation, quantum machine learning, quantum optimization, and the study of open quantum systems. Moreover, semi-definite programming, combinatorial optimizatio...
Machine learning on quantum experimental data toward solving quantum many-body problems
Gyungmin Cho, Dohun Kim·Oct 30, 2023
Advancements in the implementation of quantum hardware have enabled the acquisition of data that are intractable for emulation with classical computers. The integration of classical machine learning (ML) algorithms with these data holds potential for...
Remote-Entanglement Protocols for Stationary Qubits with Photonic Interfaces
H. Beukers, M. Pasini, Hyeongrak Choi +3 more·Oct 30, 2023
Generating entanglement between distant quantum systems is at the core of quantum networking. In recent years, numerous theoretical protocols for remote entanglement generation have been proposed, of which many have been experimentally realized. Here...
Electrical Tuning of Neutral and Charged Excitons with 1-nm Gate
Jawaher Almutlaq, Jiangtao Wang, Linsen Li +5 more·Oct 30, 2023
Electrical control of individual spins and photons in solids is key for quantum technologies, but scaling down to small, static systems remains challenging. Here, we demonstrate nanoscale electrical tuning of neutral and charged excitons in monolayer...
A Hybrid Quantum Algorithm for Load Flow
David Neufeld, S. F. Hafshejani, D. Gaur +1 more·Oct 30, 2023
The goal of the load flow study is to ensure that electrical power is delivered efficiently and reliably to end-users while maintaining the stability and security of the power system. Newton-Raphson is a numerical method used widely for load flow ana...
Entanglement-based quantum digital signatures over a deployed campus network.
Joseph C. Chapman, M. Alshowkan, Bing Qi +1 more·Oct 30, 2023
The quantum digital signature protocol offers a replacement for most aspects of public-key digital signatures ubiquitous in today's digital world. A major advantage of a quantum-digital-signatures protocol is that it can have information-theoretic se...
Quantum algorithms for linear and non-linear fractional reaction-diffusion equations
Dong An, Konstantina Trivisa·Oct 29, 2023
High-dimensional fractional reaction-diffusion equations have numerous applications in the fields of biology, chemistry, and physics, and exhibit a range of rich phenomena. While classical algorithms have an exponential complexity in the spatial dime...
Practical Trainable Temporal Postprocessor for Multistate Quantum Measurement
Saeed A. Khan, Ryan Kaufman, Boris Mesits +2 more·Oct 27, 2023
We develop and demonstrate a trainable temporal postprocessor (TPP) harnessing a simple but versatile machine learning algorithm to provide optimal processing of quantum measurement data subject to arbitrary noise processes for the readout of an arbi...
Deep quantum circuit simulations of low-energy nuclear states
Ang Li, Alessandro Baroni, I. Stetcu +1 more·Oct 26, 2023
Numerical simulation is an important method for verifying the quantum circuits used to simulate low-energy nuclear states. However, real-world applications of quantum computing for nuclear theory often generate deep quantum circuits that place demand...
From Heisenberg to Hubbard: An initial state for the shallow quantum simulation of correlated electrons
Bruno Murta, J. Fern'andez-Rossier·Oct 25, 2023
The widespread use of the noninteracting ground state as the initial state for the digital quantum simulation of the Fermi-Hubbard model is largely due to the scarcity of alternative easy-to-prepare approximations to the exact ground state in the lit...
Variational quantum simulation using non-Gaussian continuous-variable systems
Paolo Stornati, Antonio Acín, Ulysse Chabaud +3 more·Oct 24, 2023
This work introduces an approach to quantum simulation by leveraging continuous-variable systems within a photonic hardware-inspired framework. The primary focus is on simulating static properties of the ground state of Hamiltonians associated with i...
Qudit-Based Spectroscopy for Measurement and Control of Nuclear-Spin Qubits in Silicon Carbide.
Erik Hesselmeier, Pierre Kuna, Istv'an Tak'acs +9 more·Oct 24, 2023
Nuclear spins with hyperfine coupling to single electron spins are highly valuable quantum bits. Here we probe and characterize the particularly rich nuclear-spin environment around single silicon vacancy color centers (V2) in 4H-SiC. By using the el...
Boundary scattering tomography of the Bose Hubbard model on general graphs
Abhi Saxena, E. Abbasgholinejad, Arka Majumdar +1 more·Oct 22, 2023
Correlated quantum many-body phenomena in lattice models have been identified as a set of physically interesting problems that cannot be solved classically. Analog quantum simulators, in photonics and microwave superconducting circuits, have emerged ...
Tensorized Pauli decomposition algorithm
Lukas Hantzko, Lennart Binkowski, Sabhyata Gupta·Oct 20, 2023
This paper introduces a novel general-purpose algorithm for Pauli decomposition that employs matrix slicing and addition rather than expensive matrix multiplication, significantly accelerating the decomposition of multi-qubit matrices. In a detailed ...
Generalized Quantum Data-Syndrome Codes and Belief Propagation Decoding for Phenomenological Noise
Kao-Yueh Kuo, Ching-Yi Lai·Oct 19, 2023
Quantum stabilizer codes often struggle with syndrome errors due to measurement imperfections. Typically, multiple rounds of syndrome extraction are employed to ensure reliable error information. In this paper, we consider phenomenological decoding p...
Continuous-variable quantum computation of the O(3) model in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>1</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math> dimensions
Raghav G. Jha, Felix Ringer, G. Siopsis +1 more·Oct 19, 2023
We formulate the $O(3)$ non-linear sigma model in 1+1 dimensions as a limit of a three-component scalar field theory restricted to the unit sphere in the large squeezing limit. This allows us to describe the model in terms of the continuous variable ...