Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,531 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum matching pursuit: A quantum algorithm for sparse representations
Armando Bellante, S. Zanero·Feb 11, 2022
Representing signals with sparse vectors has a wide range of applications that range from image and video coding to shape representation and health monitoring. In many applications with real-time requirements, or that deal with high-dimensional signa...
Grid-based methods for chemistry simulations on a quantum computer
Hans Hon Sang Chan, Richard Meister, Tyson Jones +2 more·Feb 11, 2022
First-quantized, grid-based methods for chemistry modeling are a natural and elegant fit for quantum computers. However, it is infeasible to use today’s quantum prototypes to explore the power of this approach because it requires a substantial number...
Co-Design quantum simulation of nanoscale NMR
Manuel G. Algaba, Mario Ponce-Martinez, C. Munuera-Javaloy +7 more·Feb 11, 2022
Quantum computers have the potential to efficiently simulate the dynamics of nanoscale NMR systems. In this work we demonstrate that a noisy intermediate-scale quantum computer can be used to simulate and predict nanoscale NMR resonances. In order to...
Neural-Network Decoders for Quantum Error Correction Using Surface Codes: A Space Exploration of the Hardware Cost-Performance Tradeoffs
Ramon W. J. Overwater, M. Babaie, F. Sebastiano·Feb 11, 2022
Quantum error correction (QEC) is required in quantum computers to mitigate the effect of errors on physical qubits. When adopting a QEC scheme based on surface codes, error decoding is the most computationally expensive task in the classical electro...
Uncovering Instabilities in Variational-Quantum Deep Q-Networks
Maja Franz, Luca Wolf, Maniraman Periyasamy +5 more·Feb 10, 2022
Deep Reinforcement Learning (RL) has considerably advanced over the past decade. At the same time, state-of-the-art RL algorithms require a large computational budget in terms of training time to converge. Recent work has started to approach this pro...
Quantum algorithms for matrix operations and linear systems of equations
Wentao Qi, A. Zenchuk, Asutosh Kumar +1 more·Feb 10, 2022
Fundamental matrix operations and solving linear systems of equations are ubiquitous in scientific investigations. Using the ‘sender-receiver’ model, we propose quantum algorithms for matrix operations such as matrix-vector product, matrix-matrix pro...
Resource Optimisation of Coherently Controlled Quantum Computations with the PBS-Calculus
A. Cl'ement, S. Perdrix·Feb 10, 2022
Coherent control of quantum computations can be used to improve some quantum protocols and algorithms. For instance, the complexity of implementing the permutation of some given unitary transformations can be strictly decreased by allowing coherent c...
Ultra-low loss quantum photonic circuits integrated with single quantum emitters
Ashish Chanana, Hugo Larocque, R. Moreira +9 more·Feb 9, 2022
The scaling of many photonic quantum information processing systems is ultimately limited by the flux of quantum light throughout an integrated photonic circuit. Source brightness and waveguide loss set basic limits on the on-chip photon flux. While ...
Markovian noise modelling and parameter extraction framework for quantum devices
D. Brand, I. Sinayskiy, Francesco Petruccione·Feb 9, 2022
In recent years, Noisy Intermediate Scale Quantum (NISQ) computers have been widely used as a test bed for quantum dynamics. This work provides a new hardware-agnostic framework for modelling the Markovian noise and dynamics of quantum systems in ben...
Assessing the quality of near-term photonic quantum devices
R. Mezher, Shane Mansfield·Feb 9, 2022
For near-term quantum devices, an important challenge is to develop efficient methods to certify that noise levels are low enough to allow potentially useful applications to be carried out. We present such a method tailored to photonic quantum device...
Algebraic Bethe Circuits
A. Sopena, Max Hunter Gordon, Diego Garc'ia-Mart'in +2 more·Feb 9, 2022
The Algebraic Bethe Ansatz (ABA) is a highly successful analytical method used to exactly solve several physical models in both statistical mechanics and condensed-matter physics. Here we bring the ABA into unitary form, for its direct implementation...
QAC: Quantum-computing Aided Composition
Omar Costa Hamido·Feb 9, 2022
In this chapter I will discuss the role of quantum computing in computer music and how it can be integrated to better serve the creative artists. I will start by considering different approaches in current computer music and quantum computing tools, ...
Collisions of localized shocks and quantum circuits
Felix M. Haehl, Ying Zhao·Feb 9, 2022
We study collisions between localized shockwaves inside a black hole interior. We give a holographic boundary description of this process in terms of the overlap of two growing perturbations in a shared quantum circuit. The perturbations grow both ex...
Time complexity analysis of quantum difference methods for linear high dimensional and multiscale partial differential equations
Shiju Jin, Nan Liu, Yue Yu·Feb 9, 2022
We investigate time complexities of finite difference methods for solving the high-dimensional linear heat equation, the high-dimensional linear hyperbolic equation and the multiscale hyperbolic heat system with quantum algorithms (hence referred to ...
Devitalizing noise-driven instability of entangling logic in silicon devices with bias controls
H. Ryu, J. Kang·Feb 9, 2022
The quality of quantum bits (qubits) in silicon is highly vulnerable to charge noise that is omnipresent in semiconductor devices and is in principle hard to be suppressed. For a realistically sized quantum dot system based on a silicon-germanium het...
Quantum computing in pharma: A multilayer embedding approach for near future applications
Róbert Izsák, Christoph Riplinger, N. S. Blunt +6 more·Feb 9, 2022
Quantum computers are special purpose machines that are expected to be particularly useful in simulating strongly correlated chemical systems. The quantum computer excels at treating a moderate number of orbitals within an active space in a fully qua...
Designing exceptional-point-based graphs yielding topologically guaranteed quantum search
Quancheng Liu, D. Kessler, E. Barkai·Feb 8, 2022
Quantum walks underlie an important class of quantum computing algorithms, and represent promising approaches in various simulations and practical applications. Here we design stroboscopically monitored quantum walks and their subsequent graphs that ...
An Evolutionary Pathway for the Quantum Internet Relying on Secure Classical Repeaters
G. Long, Dong Pan, Yu‐Bo Sheng +3 more·Feb 8, 2022
Until quantum repeaters become mature, quantum networks remain restricted either to limited areas of directly connected nodes or to nodes connected to a common node. We circumvent this limitation by conceiving quantum networks using secure classical ...
Topological Authentication Technique In Topologically Asymmetric Cryptosystem
Bing Yao, Jing Su, Fei Ma +2 more·Feb 8, 2022
Making topological authentication from theory to practical application is an important and challenging task. More and more researchers pay attention on coming quantum computation, privacy data protection, lattices and cryptography. Research show the ...
An exact quantum hidden subgroup algorithm and applications to solvable groups
Muhammad Imran, G. Ivanyos·Feb 8, 2022
We present a polynomial time exact quantum algorithm for the hidden subgroup problem in $\Z_{m^k}^n$. The algorithm uses the quantum Fourier transform modulo $m$ and does not require factorization of $m$. For smooth $m$, i.e., when the prime factors ...