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
Neural network decoder for topological color codes with circuit level noise
P. Baireuther, M. D. Caio, B. Criger +2 more·Apr 9, 2018
A quantum computer needs the assistance of a classical algorithm to detect and identify errors that affect encoded quantum information. At this interface of classical and quantum computing the technique of machine learning has appeared as a way to ta...
Towards quantum machine learning with tensor networks
W. Huggins, P. Patil, B. Mitchell +2 more·Mar 30, 2018
Machine learning is a promising application of quantum computing, but challenges remain for implementation today because near-term devices have a limited number of physical qubits and high error rates. Motivated by the usefulness of tensor networks f...
Controllable two-photon interference with versatile quantum frequency processor
Hsuan-Hao Lu, J. Lukens, N. Peters +3 more·Mar 28, 2018
Quantum information is the next frontier in information science, promising unconditionally secure communications, enhanced channel capacities, and computing capabilities far beyond their classical counterparts. And as quantum information processing d...
Quantum Chemistry Calculations on a Trapped-Ion Quantum Simulator
Cornelius Hempel, C. Maier, J. Romero +10 more·Mar 27, 2018
Quantum-classical hybrid algorithms are emerging as promising candidates for near-term practical applications of quantum information processors in a wide variety of fields ranging from chemistry to physics and materials science. We report on the expe...
Restoring Heisenberg scaling in noisy quantum metrology by monitoring the environment
F. Albarelli, M. Rossi, D. Tamascelli +1 more·Mar 15, 2018
We study quantum frequency estimation for N qubits subjected to independent Markovian noise, via strategies based on time-continuous monitoring of the environment. Both physical intuition and an extended convexity property of the quantum Fisher infor...
Quantum walks over a square lattice
Arkaprabha Ghosal, P. Deb·Mar 14, 2018
Quantum random walk finds application in efficient quantum algorithms as well as in quantum network theory. Here we study the mixing time of a discrete quantum walk over a square lattice in presence percolation and decoherence. We consider bit-flip a...
Simulation of Gaussian channels via teleportation and error correction of Gaussian states
S. Tserkis, Josephine Dias, T. Ralph·Mar 9, 2018
Gaussian channels are the typical way to model the decoherence introduced by the environment in continuous-variable quantum states. It is known that those channels can be simulated by a teleportation protocol using as a resource state either a maxima...
Improving performance of an analog electronic device using quantum error correction
Corey I. Ostrove, B. Cour, Andrew Lanham +1 more·Mar 8, 2018
The use of analog classical systems for computation is generally thought to be a difficult proposition due to the susceptibility of these devices to noise and the lack of a clear framework for achieving fault-tolerance. We present experimental result...
Quantum Coherence Measures for Quantum Switch
Marek Sawerwain, J. Wiśniewska·Mar 8, 2018
We suppose that a structure working as a quantum switch will be a significant element of future networks realizing transmissions of quantum information. In this chapter we analyze a process of switch's operating -- especially in systems with a noise ...
High-Coherence Fluxonium Qubit
Long B. Nguyen, Yen-Hsiang Lin, A. Somoroff +3 more·Mar 7, 2018
We report superconducting fluxonium qubits with coherence times largely limited by energy relaxation and reproducibly satisfying T2 > 100 microseconds (T2 > 300 microseconds in one device). Moreover, given the state of the art values of the surface l...
Estimating localizable entanglement from witnesses
D. Amaro, Markus P. Müller, A. Pal·Mar 7, 2018
Computing localizable entanglement for noisy many-particle quantum states is difficult due to the optimization over all possible sets of local projection measurements. Therefore, it is crucial to develop lower bounds, which can provide useful informa...
Kak’s three-stage protocol of secure quantum communication revisited: hitherto unknown strengths and weaknesses of the protocol
Kishore Thapliyal, A. Pathak·Mar 6, 2018
Kak’s three-stage protocol for quantum key distribution is revisited with special focus on its hitherto unknown strengths and weaknesses. It is shown that this protocol can be used for secure direct quantum communication. Further, the implementabilit...
Nested quantum annealing correction at finite temperature: p -spin models
S. Matsuura, H. Nishimori, W. Vinci +1 more·Mar 5, 2018
Quantum annealing in a real device is necessarily susceptible to errors due to diabatic transitions and thermal noise. Nested quantum annealing correction is a method to suppress errors by using an all-to-all penalty coupling among a set of physical ...
Experimental demonstration of Pauli-frame randomization on a superconducting qubit.
M. Ware, G. Ribeill, D. Ristè +3 more·Mar 5, 2018
The realization of quantum computing's promise despite noisy imperfect qubits relies, at its core, on the ability to scale cheaply through error correction and fault-tolerance. While fault-tolerance requires relatively mild assumptions about the natu...
Fault-tolerant detection of a quantum error
Serge Rosenblum, P. Reinhold, M. Mirrahimi +4 more·Feb 28, 2018
Fault-tolerant quantum coding Noise and imperfections in a quantum system can result in the presence and propagation of errors through the system. A reliable quantum processor will need to be able to correct for these errors and error syndromes. Rose...
Error correction for gate operations in systems of exchange-coupled singlet-triplet qubits in double quantum dots
Donovan Buterakos, R. Throckmorton, S. Das Sarma·Feb 22, 2018
We present a scheme for correcting for crosstalk- and noise-induced errors in exchange-coupled singlet-triplet semiconductor double quantum dot qubits. While exchange coupling allows the coupling strength to be controlled independently of the intraqu...
Deep neural decoders for near term fault-tolerant experiments
C. Chamberland, Pooya Ronagh·Feb 18, 2018
Finding efficient decoders for quantum error correcting codes adapted to realistic experimental noise in fault-tolerant devices represents a significant challenge. In this paper we introduce several decoding algorithms complemented by deep neural dec...
Reinforcement Learning with Neural Networks for Quantum Feedback
T. Fosel, Petru Tighineanu, Talitha Weiss +1 more·Feb 14, 2018
Machine learning with artificial neural networks is revolutionizing science. The most advanced challenges require discovering answers autonomously. This is the domain of reinforcement learning, where control strategies are improved according to a rew...
Quantum Algorithm for Optimization and Polynomial System Solving over Finite Field and Application to Cryptanalysis
Yu-Ao Chen, X. Gao, C. Yuan·Feb 12, 2018
In this paper, we give quantum algorithms for two fundamental computation problems: solving polynomial systems over finite fields and optimization where the arguments of the objective function and constraints take values from a finite field or a boun...
Transversality and lattice surgery: Exploring realistic routes toward coupled logical qubits with trapped-ion quantum processors
Mauricio Gutiérrez, Mauricio Gutiérrez, Markus Müller +3 more·Jan 22, 2018
Active quantum error correction has been identified as a crucial ingredient of future quantum computers, motivating the recent experimental efforts to encode logical quantum bits using small topological codes. In addition to the demonstration of the ...