Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,714
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152
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Research Volume
15,749 papers in 12 months (-37% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A framework for deep energy-based reinforcement learning with quantum speed-up
S. Jerbi, Hendrik Poulsen Nautrup, Lea M. Trenkwalder +2 more·Oct 28, 2019
In the past decade, deep learning methods have seen tremendous success in various supervised and unsupervised learning tasks such as classification and generative modeling. More recently, deep neural networks have emerged in the domain of reinforceme...
Quantum synchronization on the IBM Q system
M. Koppenhöfer, C. Bruder, Alexandre Roulet·Oct 28, 2019
We report the first experimental demonstration of quantum synchronization. This is achieved by performing a digital simulation of a single spin-$1$ limit-cycle oscillator on the quantum computers of the IBM Q System. Applying an external signal to th...
Quantum equation of motion for computing molecular excitation energies on a noisy quantum processor
Pauline J. Ollitrault, A. Kandala, Chun-Fu Chen +7 more·Oct 28, 2019
The computation of molecular excitation energies is essential for predicting photo-induced reactions of chemical and technological interest. While the classical computing resources needed for this task scale poorly, quantum algorithms emerge as promi...
Constructing new k-uniform and absolutely maximally entangled states
Zahra Raissi, Adam Teixidó, C. Gogolin +1 more·Oct 28, 2019
Pure multipartite quantum states of n parties and local dimension q are called k-uniform if all reductions to k parties are maximally mixed. These states are relevant for our understanding of multipartite entanglement, quantum information protocols a...
Experimental Implementation of Universal Nonadiabatic Geometric Quantum Gates in a Superconducting Circuit.
Yuan Xu, Ziyue Hua, Tao Chen +9 more·Oct 27, 2019
Using geometric phases to realize noise-resilient quantum computing is an important method to enhance the control fidelity. In this work, we experimentally realize a universal nonadiabatic geometric quantum gate set in a superconducting qubit chain. ...
Variational Quantum Algorithms for Dimensionality Reduction and Classification
Jin‐Min Liang, Shuqian Shen, Ming Li +1 more·Oct 27, 2019
In this work, we present a quantum neighborhood preserving embedding and a quantum local discriminant embedding for dimensionality reduction and classification. We demonstrate that these two algorithms have an exponential speedup over their respectiv...
Quantized Graphs and Quantum Error Correction
Zhengwei Liu·Oct 26, 2019
Graph theory is important in information theory. We introduce a quantization process on graphs and apply the quantized graphs in quantum information. The quon language provides a mathematical theory to study such quantized graphs in a general framewo...
Computing partition functions in the one-clean-qubit model
Anirban Narayan Chowdhury, R. Somma, Yiğit Subaşı·Oct 25, 2019
We present a method to approximate partition functions of quantum systems using mixed-state quantum computation. For positive semi-definite Hamiltonians, our method has expected running-time that is almost linear in $(M/(\epsilon_{\rm rel}\mathcal{Z}...
Super Quantum Search Algorithm with Weak Value Amplification and Postselection
A. Pati·Oct 25, 2019
We propose a new model of quantum computation which aims to speed up quantum algorithms assisted by the weak value amplification and ancillay quantum register with the pre- and postelection. Within this model, we show that a quantum computer can solv...
Repetitive single electron spin readout in silicon
J. Yoneda, K. Takeda, A. Noiri +5 more·Oct 25, 2019
Single electron spins confined in silicon quantum dots hold great promise as a quantum computing architecture with demonstrations of long coherence times, high-fidelity quantum logic gates, basic quantum algorithms and device scalability. While singl...
Using Spectral Graph Theory to Map Qubits onto Connectivity-limited Devices
Joseph X. Lin, E. Anschuetz, A. Harrow·Oct 25, 2019
We propose an efficient heuristic for mapping the logical qubits of quantum algorithms to the physical qubits of connectivity-limited devices, adding a minimal number of connectivity-compliant SWAP gates. In particular, given a quantum circuit, we co...
Majorana-based quantum computing in nanowire devices
Christian Tutschku, R. Reinthaler, C. Lei +2 more·Oct 24, 2019
The boundary of topological superconductors might lead to the appearance of Majorana edge modes, whose non-trivial exchange statistics can be used for topological quantum computing. In branched nanowire networks one can exchange Majorana states by ti...
Quantum supremacy using a programmable superconducting processor
F. Arute, K. Arya, R. Babbush +74 more·Oct 23, 2019
The promise of quantum computers is that certain computational tasks might be executed exponentially faster on a quantum processor than on a classical processor1. A fundamental challenge is to build a high-fidelity processor capable of running quantu...
Robustness to spontaneous emission of a variational quantum algorithm
L. Henriet·Oct 23, 2019
We study theoretically the effects of dissipation on the performances of a variational quantum algorithm used to approximately solve a combinatorial optimization problem, the Maximum Independent Set, on a platform of neutral atoms. We take a realisti...
Classical Quantum Optimization with Neural Network Quantum States.
Joseph Gomes, K. McKiernan, P. Eastman +1 more·Oct 23, 2019
The classical simulation of quantum systems typically requires exponential resources. Recently, the introduction of a machine learning-based wavefunction ansatz has led to the ability to solve the quantum many-body problem in regimes that had previou...
Is the Trotterized UCCSD Ansatz Chemically Well-Defined?
Harper R. Grimsley, Daniel Claudino, S. Economou +2 more·Oct 23, 2019
The variational quantum eigensolver (VQE) has emerged as one of the most promising near-term quantum algorithms that can be used to simulate many-body systems such as molecular electronic structures. Serving as an attractive ansatz in the VQE algorit...
Universal programmable photonic architecture for quantum information processing
Ben Bartlett, S. Fan·Oct 23, 2019
We present a photonic integrated circuit architecture for a quantum programmable gate array (QPGA) capable of preparing arbitrary quantum states and operators. The architecture consists of a lattice of phase-modulated Mach-Zehnder interferometers, wh...
An Improved Implementation Approach for Quantum Phase Estimation on Quantum Computers
Hamed Mohammadbagherpoor, Young-Hyun Oh, P. Dreher +3 more·Oct 23, 2019
Quantum phase estimation (QPE) is one of the core algorithms for quantum computing. It has been extensively studied and applied in a variety of quantum applications such as the Shor's factoring algorithm, quantum sampling algorithms and the calculati...
Fast quantum subroutines for the simplex method
G. Nannicini·Oct 23, 2019
What would Dantzig do with a quantum computer? It is unlikely we will ever find out the answer to this question. However, we can try to understand if the simplex method can be implemented on a quantum computer, and this might have piqued Dantzig’s in...
Multilevel Combinatorial Optimization across Quantum Architectures
Hayato Ushijima-Mwesigwa, Ruslan Shaydulin, C. Negre +3 more·Oct 22, 2019
Emerging quantum processors provide an opportunity to explore new approaches for solving traditional problems in the post Moore’s law supercomputing era. However, the limited number of qubits makes it infeasible to tackle massive real-world datasets ...