Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,356 papers in 12 months (-8% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Fast Ion Gates Outside the Lamb-Dicke Regime by Robust Quantum Optimal Control
Xiaodong Yang, Y. Lin, Yao Lu +1 more·Sep 20, 2022
We present a robust quantum optimal control framework for implementing fast entangling gates on ion-trap quantum processors. The framework leverages tailored laser pulses to drive the multiple vibrational sidebands of the ions to create phonon-mediat...
Long-range data transmission in a fault-tolerant quantum bus architecture
Shin Ho Choe, R. Koenig·Sep 20, 2022
We propose a fault-tolerant scheme for generating long-range entanglement at the ends of a rectangular array of qubits of length R with a square cross-section of m=O(log2R)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepa...
Dimensionality Reduction with Variational Encoders Based on Subsystem Purification
R. Selvarajan, M. Sajjan, T. Humble +1 more·Sep 20, 2022
Efficient methods for encoding and compression are likely to pave the way toward the problem of efficient trainability on higher-dimensional Hilbert spaces, overcoming issues of barren plateaus. Here, we propose an alternative approach to variational...
Tunable spectral narrowing enabling the functionality of graphene qubit circuits at room temperature
S. Shafraniuk·Sep 20, 2022
Electrically controllable quantum coherence in quantum dot clusters and arrays based on graphene stripes with zigzag atomic edges (ZZ-stripes) is studied using the Dirac equation and S-matrix technique. We find that respective multiqubit circuits pro...
Wave Function Realization of a Thermal Collision Model
Uriel Shafir, R. Kosloff·Sep 20, 2022
An efficient algorithm to simulate dynamics of open quantum system is presented. The method describes the dynamics by unraveling stochastic wave functions converging to a density operator description. The stochastic techniques are based on the quantu...
Quantum jet clustering with LHC simulated data
J. J. M. D. Lejarza, L. Cieri, G. Rodrigo·Sep 19, 2022
We study the case where quantum computing could improve jet clustering by considering two new quantum algorithms that might speed up classical jet clustering algorithms. The first one is a quantum subroutine to compute a Minkowski-based distance betwe...
Quantum computational finance: martingale asset pricing for incomplete markets
P. Rebentrost, Alessandro Luongo, Samuel Bosch +1 more·Sep 19, 2022
A derivative is a financial security whose value is a function of underlying traded assets and market outcomes. Pricing a financial derivative involves setting up a market model, finding a martingale (``fair game") probability measure for the model f...
C2QA - Bosonic Qiskit
Timothy J Stavenger, E. Crane, Kevin C. Smith +3 more·Sep 19, 2022
The practical benefits of hybrid quantum information processing hardware that contains continuous-variable objects (bosonic modes such as mechanical or electromagnetic oscillators) in addition to traditional (discrete-variable) qubits have recently b...
A pathway to accurate potential energy curves on NISQ devices
R. Ward, D. Benoit, F. Benfenati·Sep 19, 2022
We present a practical workflow to compute the potential energy curve of the hydrogen molecule on near intermediate-scale quantum (NISQ) devices. The proposed approach uses an extrapolation scheme to deliver, with only few qubits, full configuration in...
A cryogenic SRAM based arbitrary waveform generator in 14 nm for spin qubit control
M. Prathapan, P. Mueller, C. Menolfi +8 more·Sep 19, 2022
Realization of qubit gate sequences require coherent microwave control pulses with programmable amplitude, duration, spacing and phase. We propose an SRAM based arbitrary waveform generator for cryogenic control of spin qubits. We demonstrate in this...
Scalable Surface-Code Decoders with Parallelization in Time
Xinyu Tan, Fang Zhang, R. Chao +2 more·Sep 19, 2022
Fast classical processing is essential for most quantum fault-tolerance architectures. We introduce a sliding-window decoding scheme that provides fast classical processing for the surface code through parallelism. Our scheme divides the syndromes in...
Digital quantum simulation of the BCS model with a central-spin-like quantum processor
Jan Ruh, Regina Finsterhoelzl, G. Burkard·Sep 19, 2022
The simulation of quantum systems is one of the most promising applications of quantum computers. In this paper we present a quantum algorithm to perform digital quantum simulations of the BCS model on a quantum register with a star shaped connectivi...
Topological data analysis on noisy quantum computers
I. Akhalwaya, Shashanka Ubaru, K. Clarkson +6 more·Sep 19, 2022
Topological data analysis (TDA) is a powerful technique for extracting complex and valuable shape-related summaries of high-dimensional data. However, the computational demands of classical algorithms for computing TDA are exorbitant, and quickly bec...
FV-Train: Quantum Convolutional Neural Network Training with a Finite Number of Qubits by Extracting Diverse Features (Student Abstract)
Hankyul Baek, Won Joon Yun, Joongheon Kim·Sep 19, 2022
Quantum convolutional neural network (QCNN) has just become as an emerging research topic as we experience the noisy intermediate-scale quantum (NISQ) era and beyond. As convolutional filters in QCNN extract intrinsic feature using quantum-based ansa...
Quantum network reliability with perfect nodes
J. M. Burgos·Sep 19, 2022
We introduce the concept of quantum reliability as an extension of the concept of network reliability in the context of quantum networks. We show that this concept is intimately related to the concept of quantum reliability operator that we also intr...
Improving the Efficiency of Payments Systems Using Quantum Computing
Christopher McMahon, D. McGillivray, Ajit Desai +5 more·Sep 19, 2022
High-value payment systems (HVPSs) are typically liquidity intensive because payments are settled on a gross basis. State-of-the-art solutions to this problem include algorithms that seek netting sets and allow for ad hoc reordering of submitted paym...
A general quantum circuit framework for Extended Wigner's Friend Scenarios: logically and causally consistent reasoning without absolute measurement events
V. Vilasini, M. P. Woods·Sep 19, 2022
Extended Wigner's Friend Scenarios (EWFSs) go beyond the standard usage of quantum theory, where agents are treated classically, and instead model agents as unitary evolving quantum systems. This has been the subject of several no-go results: Frauchi...
Sequential optimal selections of single-qubit gates in parameterized quantum circuits
Kaito Wada, Rudy Raymond, Yuki Sato +1 more·Sep 18, 2022
In variational quantum algorithms, it is important to balance conflicting requirements of expressibility and trainability of a parameterized quantum circuit (PQC). However, appropriate PQC designs are not necessarily trivial. Here, we propose an algo...
Time complexity analysis of quantum algorithms via linear representations for nonlinear ordinary and partial differential equations
Shi Jin, Nana Liu, Yue Yu·Sep 18, 2022
We construct quantum algorithms to compute the solution and/or physical observables of nonlinear ordinary differential equations (ODEs) and nonlinear Hamilton-Jacobi equations (HJE) via linear representations or exact mappings between nonlinear ODEs/...
Quantum symbolic execution
Jiang Nan, Zichen Wang, Wang Jian·Sep 18, 2022
With advances in quantum computing, researchers can now write and run many quantum programs. However, there is still a lack of effective methods for debugging quantum programs. In this paper, quantum symbolic execution (QSE) is proposed to generate t...