Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,754 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Adiabatic evolution on a spatial-photonic Ising machine
D. Pierangeli, G. Marcucci, C. Conti·May 18, 2020
Combinatorial optimization problems are crucial for widespread applications but remain difficult to solve on a large scale with conventional hardware. Novel optical platforms, known as coherent or photonic Ising machines, are attracting considerable ...
Variational quantum Gibbs state preparation with a truncated Taylor series
Youle Wang, Guangxi Li, Xin Wang·May 18, 2020
The preparation of quantum Gibbs state is an essential part of quantum computation and has wide-ranging applications in various areas, including quantum simulation, quantum optimization, and quantum machine learning. In this paper, we propose variati...
Coupled cluster singles and doubles variational quantum eigensolver ansatz for electronic structure calculations
Rongxin Xia, S. Kais·May 18, 2020
Variational quantum eigensolver (VQE) for electronic structure calculations is believed to be one major potential application of near term quantum computing. Among all proposed VQE algorithms, the unitary coupled cluster singles and doubles excitatio...
Quantum machine learning in high energy physics
W. Guan, G. Perdue, Arthur Pesah +4 more·May 18, 2020
Machine learning has been used in high energy physics (HEP) for a long time, primarily at the analysis level with supervised classification. Quantum computing was postulated in the early 1980s as way to perform computations that would not be tractabl...
Balancing coherent and dissipative dynamics in a central-spin system
A. Ricottone, Y. Fang, W. Coish·May 16, 2020
The average time required for an open quantum system to reach a steady state (the steady-state time) is generally determined through a competition of coherent and incoherent (dissipative) dynamics. Here, we study this competition for a ubiquitous cen...
Teaching quantum information science to high-school and early undergraduate students
S. Economou, T. Rudolph, Edwin Barnes·May 16, 2020
We present a simple, accessible, yet rigorous outreach/educational program focused on quantum information science and technology for high-school and early undergraduate students. This program allows students to perform meaningful hands-on calculation...
Quantum Probabilistic Spaces on Graphs for Topological Evolutions
R. Balu·May 16, 2020
We start with the consideration of fusion rules of anyonic particles evolving on a 2D surface and the a hypergroup comes with it to construct entangled quantum Markov chains. The fusion rules induce an association scheme with Krein parameters and the...
Efficient State Preparation for Quantum Amplitude Estimation
Almudena Carrera Vazquez, Stefan Woerner·May 15, 2020
Quantum Amplitude Estimation (QAE) can achieve a quadratic speed-up for applications classically solved by Monte Carlo simulation. A key requirement to realize this advantage is efficient state preparation. If state preparation is too expensive, it c...
Learning-Based Quantum Error Mitigation
Armands Strikis, Dayue Qin, Yanzhu Chen +2 more·May 15, 2020
If NISQ-era quantum computers are to perform useful tasks, they will need to employ powerful error mitigation techniques. Quasi-probability methods can permit perfect error compensation at the cost of additional circuit executions, provided that the ...
Classical Simulation of Quantum Supremacy Circuits
Cupjin Huang, Fang Zhang, M. Newman +10 more·May 14, 2020
It is believed that random quantum circuits are difficult to simulate classically. These have been used to demonstrate quantum supremacy: the execution of a computational task on a quantum computer that is infeasible for any classical computer. The t...
Thermal pure quantum matrix product states recovering a volume law entanglement
Atsushi Iwaki, A. Shimizu, C. Hotta·May 14, 2020
We propose a way to construct thermal pure quantum matrix product state (TPQ-MPS) that can simulate finite temperature quantum many body systems with a minimal numerical cost comparable to the matrix product algorithm for the ground state. The MPS wa...
Realizing a deterministic source of multipartite-entangled photonic qubits
Jean-Claude Besse, K. Reuer, M. Collodo +11 more·May 14, 2020
Sources of entangled electromagnetic radiation are a cornerstone in quantum information processing and offer unique opportunities for the study of quantum many-body physics in a controlled experimental setting. Generation of multi-mode entangled stat...
Simulating the fabrication of aluminium oxide tunnel junctions
M. Cyster, J. S. Smith, N. Vogt +3 more·May 14, 2020
Aluminium oxide (AlO x ) tunnel junctions are important components in a range of nanoelectric devices including superconducting qubits where they can be used as Josephson junctions. While many improvements in the reproducibility and reliability of qu...
Trapping electrons in a room-temperature quadrupole trap
C. Matthiesen, Q. Yu, Jinen Guo +2 more·May 14, 2020
We demonstrate trapping of electrons in a millimeter-sized quadrupole Paul trap driven at 1.6 GHz in a room-temperature ultra-high vacuum setup. Cold electrons are introduced into the trap by ionization of atomic calcium via Rydberg states and stay c...
Resource requirements for efficient quantum communication using all-photonic graph states generated from a few matter qubits
P. Hilaire, Edwin Barnes, S. Economou·May 14, 2020
Quantum communication technologies show great promise for applications ranging from the secure transmission of secret messages to distributed quantum computing. Due to fiber losses, long-distance quantum communication requires the use of quantum repe...
Semiconductor qubits in practice
A. Chatterjee, Paul Stevenson, S. de Franceschi +3 more·May 13, 2020
In the past decade, semiconducting qubits have made great strides in overcoming decoherence, improving the prospects for scalability and have become one of the leading contenders for the development of large-scale quantum circuits. In this Review, we...
Operational definition of topological order
Amit Jamadagni, H. Weimer·May 13, 2020
The unrivaled robustness of topologically ordered states of matter against perturbations has immediate applications in quantum computing and quantum metrology, yet their very existence poses a challenge to our understanding of phase transitions. In p...
Realistic simulation of quantum computation using unitary and measurement channels
Ahmed Abid Moueddene, N. Khammassi, K. Bertels +1 more·May 13, 2020
The implementation and practicality of quantum algorithms hinge largely on the quality of operations within a quantum processor. Therefore, including realistic error models in quantum computing simulation platforms is crucial for testing these algori...
Boosting on the shoulders of giants in quantum device calibration
A. Wozniakowski, Jayne Thompson, M. Gu +1 more·May 13, 2020
Traditional machine learning applications, such as optical character recognition, arose from the inability to explicitly program a computer to perform a routine task. In this context, learning algorithms usually derive a model exclusively from the ev...
Conceptual Understanding through Efficient Automated Design of Quantum Optical Experiments
Mario Krenn, Jakob S. Kottmann, N. Tischler +1 more·May 13, 2020
The design of quantum experiments can be challenging for humans. This can be attributed at least in part to counterintuitive quantum phenomena such as superposition or entanglement. In experimental quantum optics, computational and artificial intelli...