Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,127 papers in 12 months (+1% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Deterministic teleportation of a quantum gate between two logical qubits
K. Chou, J. Blumoff, J. Blumoff +8 more·Jan 16, 2018
A quantum computer has the potential to efficiently solve problems that are intractable for classical computers. However, constructing a large-scale quantum processor is challenging because of the errors and noise that are inherent in real-world quan...
General framework for constructing fast and near-optimal machine-learning-based decoder of the topological stabilizer codes
Amarsanaa Davaasuren, Yasunari Suzuki, K. Fujii +1 more·Jan 13, 2018
Quantum error correction is an essential technique for constructing a scalable quantum computer. In order to implement quantum error correction with near-term quantum devices, a fast and near-optimal decoding method is demanded. A decoder based on ma...
Efficient and effective quantum compiling for entanglement-based machine learning on IBM Q devices
Davide Ferrari, M. Amoretti·Jan 8, 2018
Quantum compiling means fast, device-aware implementation of quantum algorithms (i.e. quantum circuits, in the quantum circuit model of computation). In this paper, we present a strategy for compiling IBM Q-aware, low-depth quantum circuits that gene...
Quantum-enhanced magnetometry by phase estimation algorithms with a single artificial atom
S. Danilin, A. Lebedev, Antti Vepsäläinen +4 more·Jan 7, 2018
Phase estimation algorithms are key protocols in quantum information processing. Besides applications in quantum computing, they can also be employed in metrology as they allow for fast extraction of information stored in the quantum state of a syste...
Linear-time general decoding algorithm for the surface code.
A. Darmawan, D. Poulin·Jan 5, 2018
A quantum error correcting protocol can be substantially improved by taking into account features of the physical noise process. We present an efficient decoder for the surface code which can account for general noise features, including coherences a...
Protecting solid-state spins from a strongly coupled environment
Mo Chen, Won Kyu Calvin Sun, K. Saha +2 more·Jan 4, 2018
Quantum memories are critical for solid-state quantum computing devices and a good quantum memory requires both long storage time and fast read/write operations. A promising system is the nitrogen-vacancy (NV) center in diamond, where the NV electron...
Quantum Computing in the NISQ era and beyond
J. Preskill·Jan 2, 2018
Noisy Intermediate-Scale Quantum (NISQ) technology will be available in the near future. Quantum computers with 50-100 qubits may be able to perform tasks which surpass the capabilities of today's classical digital computers, but noise in quantum gat...
Simulating boson sampling in lossy architectures
R. Garc'ia-Patr'on, J. Renema, V. Shchesnovich·Dec 28, 2017
Photon losses are among the strongest imperfections affecting multi-photon interference. Despite their importance, little is known about their effect on boson sampling experiments. In this work we show that using classical computers, one can efficien...
Quantum Learning Algorithms and Post-Quantum Cryptography
Alexander Poremba·Dec 26, 2017
Quantum algorithms have demonstrated promising speed-ups over classical algorithms in the context of computational learning theory - despite the presence of noise. In this work, we give an overview of recent quantum speed-ups, revisit the Bernstein-V...
Harnessing electro-optic correlations in an efficient mechanical converter
A. Higginbotham, P. S. Burns, M. Urmey +6 more·Dec 18, 2017
An optical network of superconducting quantum bits (qubits) is an appealing platform for quantum communication and distributed quantum computing, but developing a quantum-compatible link between the microwave and optical domains remains an outstandin...
Reducing spontaneous Raman scattering noise in high quantum bit rate QKD systems over optical fiber
M. Mlejnek, N. Kaliteevskiy, D. Nolan·Dec 16, 2017
We investigate (a) spontaneous Raman scattering of classical signals in long optical fiber links leading to significant Raman noise in quantum channels propagating in the same fiber and (b) impact of chromatic dispersion on the performance of high qu...
Noise-tolerant parity learning with one quantum bit
D. Park, J. Rhee, S. Lee·Dec 16, 2017
Demonstrating quantum advantage with less powerful but more realistic devices is of great importance in modern quantum information science. Recently, a significant quantum speedup was achieved in the problem of learning a hidden parity function with ...
Unsupervised Machine Learning on a Hybrid Quantum Computer
J. Otterbach, R. Manenti, N. Alidoust +27 more·Dec 15, 2017
Machine learning techniques have led to broad adoption of a statistical model of computing. The statistical distributions natively available on quantum processors are a superset of those available classically. Harnessing this attribute has the potent...
A quantum algorithm to train neural networks using low-depth circuits
Guillaume Verdon, M. Broughton, J. Biamonte·Dec 14, 2017
The question has remained open if near-term gate model quantum computers will offer a quantum advantage for practical applications in the pre-fault tolerance noise regime. A class of algorithms which have shown some promise in this regard are the so-...
The influence of quantum noise on the Grover algorithm and quantum Fourier transform: quantum operations theory approach
Y. Bogdanov, A. Chernyavskiy, B. Bantysh +2 more·Dec 13, 2017
The method of noisy multiqubit quantum circuits modeling is proposed. The analytical formulas for the dependence of quantum algorithms accuracy on qubits count and noise level are obtained for Grover algorithm and quantum Fourier transform. It is sho...
Measuring and Suppressing Error Correlations in Quantum Circuits
C. Edmunds, Cornelius Hempel, R. Harris +4 more·Dec 13, 2017
Quantum error correction provides a path to large-scale quantum computers, but is built on challenging assumptions about the characteristics of the underlying errors. In particular, the mathematical assumption of independent errors in quantum logic o...
Majorana-Based Fermionic Quantum Computation.
T. O’Brien, P. Rożek, A. Akhmerov·Dec 6, 2017
Because Majorana zero modes store quantum information nonlocally, they are protected from noise, and have been proposed as a building block for a quantum computer. We show how to use the same protection from noise to implement universal fermionic qua...
Quantum error correction of continuous-variable states with realistic resources
Josephine Dias, T. Ralph·Dec 6, 2017
Gaussian noise induced by loss on Gaussian states may be corrected by distributing Einstein-Podolsky-Rosen entanglement through the loss channel, purifying the entanglement using a noiseless linear amplifier (NLA), and then using it for continuous-va...
Correlating the nanostructure of Al-oxide with deposition conditions and dielectric contributions of two-level systems in perspective of superconducting quantum circuits
S. Fritz, A. Seiler, L. Radtke +5 more·Dec 5, 2017
This work is concerned with Al/Al-oxide(AlOx)/Al-layer systems which are important for Josephson-junction-based superconducting devices such as quantum bits. The device performance is limited by noise, which has been to a large degree assigned to the...
Machine Learning for Predictive Estimation of Qubit Dynamics Subject to Dephasing
R. Gupta, M. Biercuk·Dec 4, 2017
Decoherence remains a major challenge in quantum computing hardware and a variety of physical-layer controls provide opportunities to mitigate the impact of this phenomenon through feedback and feedforward control. In this work, we compare a variety ...