Papers
Live trends in quantum computing research, updated daily from arXiv.
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31,714
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15,746 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Benchmarking quantum processors with a single qubit
Oktay Göktaş, W. Tham, Kent Bonsma-Fisher +1 more·May 14, 2019
The first generation of small noisy quantum processors have recently become available to non-specialists who are not required to understand specifics of the physical platforms and, in particular, the types and sources of noise. As such, it is useful ...
Quantum Simulation Logic, Oracles, and the Quantum Advantage
N. Johansson, Jan-Åke Larsson·May 13, 2019
Query complexity is a common tool for comparing quantum and classical computation, and it has produced many examples of how quantum algorithms differ from classical ones. Here we investigate in detail the role that oracles play for the advantage of q...
Programming multi-level quantum gates in disordered computing reservoirs via machine learning
G. Marcucci, D. Pierangeli, P. Pinkse +2 more·May 13, 2019
Novel machine learning computational tools open new perspectives for quantum information systems. Here we adopt the open-source programming library TensorFlow to design multi-level quantum gates, including a computing reservoir represented by a rando...
Realization of the Werner–Holevo and Landau–Streater Quantum Channels for Qutrits on Quantum Computers
A. I. Pakhomchik, I. Feshchenko, A. Glatz +5 more·May 13, 2019
We realize the Landau–Streater (LS) and Werner–Holevo (WH) quantum channels for qutrits on IBM quantum computers. These channels correspond to the interaction between a qutrit and its environment that results in the globally unitarily covariant qutri...
Data-driven inference and observational completeness of quantum devices
M. Dall’Arno, Asaph Ho, F. Buscemi +1 more·May 13, 2019
Data-driven inference was recently introduced as a protocol that, upon the input of a set of data, outputs a mathematical description for a physical device able to explain the data. The device so inferred is automatically self-consistent, that is, ca...
Generalized swap networks for near-term quantum computing
B. O’Gorman, W. Huggins, E. Rieffel +1 more·May 13, 2019
The practical use of many types of near-term quantum computers requires accounting for their limited connectivity. One way of overcoming limited connectivity is to insert swaps in the circuit so that logical operations can be performed on physically ...
Relations among k-ME concurrence, negativity, polynomial invariants, and tangle
Limei Zhang, Ting Gao, Fengli Yan·May 13, 2019
The k-ME concurrence as a measure of multipartite entanglement (ME) unambiguously detects all k-nonseparable states in arbitrary dimensions and satisfies many important properties of an entanglement measure. Negativity is a simple computable bipartit...
Quantum algorithm for simulating an experiment: Light interference from single ions and their mirror images
L. Bouten, G. Vissers, F. Schmidt-Kaler·May 13, 2019
We widen the range of applications for quantum computing by introducing digital quantum simulation methods for coherent light-matter interactions: We simulate an experiment where the emitted light from a single ion was interfering with its mirror ima...
Adding artificial noise for code rate matching in continuous-variable quantum key distribution
S. Kreinberg, I. Koltchanov, A. Richter·May 13, 2019
The reconciliation step of continuous-variable quantum key distribution protocols usually involves forward error correction codes. Matching the code rate and the signal-to-noise ratio (SNR) of the quantum channel is required to achieve the high recon...
Vulnerability of quantum classification to adversarial perturbations
Nana Liu, P. Wittek·May 10, 2019
It is expected that the quantum advantage of certain classification problems, like quantum-enhanced machine learning algorithms, will become more pronounced as the Hilbert-space dimension grows, but care must be taken with perturbations on the system...
Demonstration of Adiabatic Variational Quantum Computing with a Superconducting Quantum Coprocessor.
Ming-Cheng Chen, M. Gong, Xiaosi Xu +15 more·May 8, 2019
Adiabatic quantum computing enables the preparation of many-body ground states. Realization poses major experimental challenges: Direct analog implementation requires complex Hamiltonian engineering, while the digitized version needs deep quantum gat...
Majorana dimers and holographic quantum error-correcting codes
A. Jahn, M. Gluza, F. Pastawski +1 more·May 8, 2019
Holographic quantum error-correcting codes have been proposed as toy models that describe key aspects of the AdS/CFT correspondence. In this work, we introduce a versatile framework of Majorana dimers capturing the intersection of stabilizer and Gaus...
Quantum anomaly detection with density estimation and multivariate Gaussian distribution
Jin‐Min Liang, Shuqian Shen, Ming Li +1 more·May 8, 2019
We study quantum anomaly detection with density estimation and multivariate Gaussian distribution. Both algorithms are constructed using the standard gate-based model of quantum computing. Compared with the corresponding classical algorithms, the res...
From Ans\"atze to Z-gates: a NASA View of Quantum Computing
E. Rieffel, Stuart Hadfield, T. Hogg +12 more·May 8, 2019
For the last few years, the NASA Quantum Artificial Intelligence Laboratory (QuAIL) has been performing research to assess the potential impact of quantum computers on challenging computational problems relevant to future NASA missions. A key aspect ...
Option Pricing using Quantum Computers
N. Stamatopoulos, D. Egger, Yue Sun +4 more·May 7, 2019
We present a methodology to price options and portfolios of options on a gate-based quantum computer using amplitude estimation, an algorithm which provides a quadratic speedup compared to classical Monte Carlo methods. The options that we cover incl...
Neural ensemble decoding for topological quantum error-correcting codes
Milap Sheth, S. Jafarzadeh, Vlad Gheorghiu·May 7, 2019
Topological quantum error-correcting codes are a promising candidate for building fault-tolerant quantum computers. Decoding topological codes optimally, however, is known to be a computationally hard problem. Various decoders have been proposed that...
Design Space Exploration as Quantified Satisfaction
A. Feldman, J. Kleer, I. Matei·May 7, 2019
We propose novel algorithms for design and design space exploration. The designs computed by these algorithms are compositions of function types specified in component libraries. Our algorithms reduce the design problem to quantified satisfiability a...
Quantum Logic Spectroscopy with Ions in Thermal Motion
D. Kienzler, D. Kienzler, Yong Wan +12 more·May 7, 2019
A mixed-species geometric phase gate has been proposed for implementing quantum logic spectroscopy on trapped ions, which combines probe and information transfer from the spectroscopy to the logic ion in a single pulse. We experimentally realize this...
On the Entanglement Cost of One-Shot Compression
Shima Bab Hadiashar, A. Nayak·May 6, 2019
We revisit the task of visible compression of an ensemble of quantum states with entanglement assistance in the one-shot setting. The protocols achieving the best compression use many more qubits of shared entanglement than the number of qubits in th...
Entanglement and complexity of interacting qubits subject to asymmetric noise
E. Kapit, P. Roushan, C. Neill +2 more·May 6, 2019
The simulation complexity of predicting the time evolution of delocalized many-body quantum systems has attracted much recent interest, and simulations of such systems in real quantum hardware are promising routes to demonstrating a quantum advantage...