Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,881
This Month
1,306
Today
0
Research Volume
13,127 papers in 12 months (+1% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
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-...
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...
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...
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 ...
Analysing correlated noise on the surface code using adaptive decoding algorithms
Naomi H. Nickerson, Benjamin J. Brown·Dec 1, 2017
Laboratory hardware is rapidly progressing towards a state where quantum error-correcting codes can be realised. As such, we must learn how to deal with the complex nature of the noise that may occur in real physical systems. Single qubit Pauli error...
Randomized Benchmarking Using Unitary t-Design for Average Fidelity Estimation of Practical Quantum Circuit
Linxi Zhang, Chuanghua Zhu, Changxing Pei·Nov 22, 2017
Randomized benchmarking is a useful scheme for characterizing the noise in quantum system. However, it is insensitive to practical unitary errors. We propose a method of applying unitary t-design in quantum process tomography with local random unitar...
Strictly local one-dimensional topological quantum error correction with symmetry-constrained cellular automata
Nicolai Lang, H. P. Buchler·Nov 22, 2017
Active quantum error correction on topological codes is one of the most promising routes to long-term qubit storage. In view of future applications, the scalability of the used decoding algorithms in physical implementations is crucial. In this work,...
Quantum metrology with a transmon qutrit
A. R. Shlyakhov, V. Zemlyanov, M. Suslov +5 more·Nov 16, 2017
Making use of coherence and entanglement as metrological quantum resources allows to improve the measurement precision from the shot-noise- or quantum limit to the Heisenberg limit. Quantum metrology then relies on the availability of quantum enginee...
A small quantum computer is needed to optimize fault-tolerant protocols
Pavithran Iyer, D. Poulin·Nov 13, 2017
As far as we know, a useful quantum computer will require fault-tolerant gates, and existing schemes demand a prohibitively large space and time overhead. We argue that a first generation quantum computer will be very valuable to design, test, and op...
A crossbar network for silicon quantum dot qubits
Ruoyu Li, L. Petit, D. P. Franke +10 more·Nov 10, 2017
Quantum dots take a shortcut toward practical quantum information. The spin states of single electrons in gate-defined quantum dots satisfy crucial requirements for a practical quantum computer. These include extremely long coherence times, high-fide...
Implementation-independent sufficient condition of the Knill-Laflamme type for the autonomous protection of logical qudits by strong engineered dissipation
Jae-Mo Lihm, Kyungjoo Noh, U. R. Fischer·Nov 8, 2017
Autonomous quantum error correction utilizes the engineered coupling of a quantum system to a dissipative ancilla to protect quantum logical states from decoherence. We show that the Knill-Laflamme condition, stating that the environmental error oper...
QVECTOR: an algorithm for device-tailored quantum error correction
Peter D. Johnson, J. Romero, J. Olson +2 more·Nov 7, 2017
Current approaches to fault-tolerant quantum computation will not enable useful quantum computation on near-term devices of 50 to 100 qubits. Leading proposals, such as the color code and surface code schemes, must devote a large fraction of their ph...