Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,714
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152
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Research Volume
15,744 papers in 12 months (-37% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Computation and Visualization of Hamiltonians using Discrete Quantum Mechanics and IBM QISKit
R. Miceli, M. McGuigan·Aug 1, 2018
Quantum computers have the potential to transform the ways in which we tackle some important problems. The efforts by companies like Google, IBM and Microsoft to construct quantum computers have been making headlines for years. Equally important is t...
Effects of Lorentz boosts on Dirac bispinor entanglement
V. Bittencourt, A. Bernardini, M. Blasone·Aug 1, 2018
In this paper we describe the transformation properties of quantum entanglement encoded in a pair of spin 1/2 particles described via Dirac bispinors. Due to the intrinsic parity-spin internal structure of the bispinors, the joint state is a four-qub...
Relaxation of nonequilibrium quasiparticles in mesoscopic size superconductors
K. Arutyunov, K. Arutyunov, S. A. Chernyaev +7 more·Aug 1, 2018
Rapid development of micro- and nanofabrication methods have provoked interest and enabled experimental studies of electronic properties of a vast class of (sub)micrometer-size solid state systems. Mesoscopic-size hybrid structures, containing superc...
Practical and reliable error bars for quantum process tomography
L. P. Thinh, P. Faist, J. Helsen +2 more·Aug 1, 2018
Current techniques in quantum process tomography typically return a single point estimate of an unknown process based on a finite albeit large amount of measurement data. Due to statistical fluctuations, however, other processes close to the point es...
Entanglement negativity and minimal entanglement wedge cross sections in holographic theories
Jonah Kudler-Flam, S. Ryu·Aug 1, 2018
We calculate logarithmic negativity, a quantum entanglement measure for mixed quantum states, in quantum error-correcting codes and find it to equal the minimal cross sectional area of the entanglement wedge in holographic codes with a quantum correc...
Quantum Optimization for Maximum Independent Set Using Rydberg Atom Arrays
H. Pichler, Sheng-Tao Wang, Leo Zhou +2 more·Aug 1, 2018
We describe and analyze an architecture for quantum optimization to solve maximum independent set (MIS) problems using neutral atom arrays trapped in optical tweezers. Optimizing independent sets is one of the paradigmatic, NP-hard problems in comput...
Simulating 0+1 Dimensional Quantum Gravity on Quantum Computers: Mini-Superspace Quantum Cosmology and the World Line Approach in Quantum Field Theory
C. D. Kocher, M. McGuigan·Aug 1, 2018
Quantum computers are promising candidates to radically expand the domain of computational science by their increased computing power and more effective algorithms. In particular, quantum computing could have a tremendous impact on the field of quant...
Simulation of quantum circuits by low-rank stabilizer decompositions
S. Bravyi, D. Browne, Padraic Calpin +3 more·Aug 1, 2018
Recent work has explored using the stabilizer formalism to classically simulate quantum circuits containing a few non-Clifford gates. The computational cost of such methods is directly related to the notion of stabilizerrank, which for a pure state ψ...
Optimization of Circuits for IBM's Five-Qubit Quantum Computers
G. Dueck, A. Pathak, M. Rahman +2 more·Aug 1, 2018
IBM has made several quantum computers available to researchers around the world via cloud services. Two architectures with five qubits, one with 16, and one with 20 qubits are available to run experiments. The IBM architectures implement gates from ...
Quantum Correlations Can Speed Up All Classical Computation
Carlos A. Pérez-Delgado, Sai Vinjanampathy·Jul 31, 2018
Quantum algorithms that can speed up certain tasks, such as factorisation and unstructured search, have driven a decades-long development of quantum computers and quantum technologies. Yet, outside specialized applications, quantum computers are beli...
Ultrastrong coupling between light and matter
Anton Frisk Kockum, A. Miranowicz, S. De Liberato +2 more·Jul 31, 2018
Light–matter coupling with strength comparable to the bare transition frequencies of the system is called ultrastrong. This Review surveys how experiments have realized ultrastrong coupling in the past decade, the new phenomena predicted in this regi...
Observation of Cooperative Electronic Quantum Tunneling: Increasing Accessible Nuclear States in a Molecular Qudit.
E. Moreno‐Pineda, S. Klyatskaya, P. Du +4 more·Jul 31, 2018
As an extension of two-level quantum bits (qubits), multilevel systems, so-called qu dits, where d represents the Hilbert space dimension, have been predicted to reduce the number of iterations in quantum-computation algorithms. This has been tested ...
QEngine: A C++ library for quantum optimal control of ultracold atoms
J. J. Sørensen, J. H. Jensen, T. Heinzel +1 more·Jul 31, 2018
Abstract We present the first version of the QEngine, an open-source C++ library for performing optimal control of ultracold quantum systems. The most notable systems presented here are Bose–Einstein condensates, many-body systems described by Bose–H...
A dissipatively stabilized Mott insulator of photons
R. Ma, B. Saxberg, Clai Owens +4 more·Jul 30, 2018
Superconducting circuits are a competitive platform for quantum computation because they offer controllability, long coherence times and strong interactions—properties that are essential for the study of quantum materials comprising microwave photons...
Distributed Encoding and Decoding of Quantum Information over Networks
H. Yamasaki, M. Murao·Jul 30, 2018
Encoding and decoding quantum information in a multipartite quantum system are indispensable for quantum error correction and also play crucial roles in multiparty tasks in distributed quantum information processing such as quantum secret sharing. To...
Controlling Spin-Orbit Interactions in Silicon Quantum Dots Using Magnetic Field Direction
T. Tanttu, B. Hensen, K. Chan +9 more·Jul 27, 2018
Silicon quantum dots are considered an excellent platform for spin qubits, partly due to their weak spin-orbit interaction. However, the sharp interfaces in the heterostructures induce a small but significant spin-orbit interaction which degrade the ...
Hybrid quantum linear equation algorithm and its experimental test on IBM Quantum Experience
Yonghae Lee, J. Joo, Soojoon Lee·Jul 27, 2018
We propose a hybrid quantum algorithm based on the Harrow-Hassidim-Lloyd (HHL) algorithm for solving a system of linear equations. In this paper, we show that our hybrid algorithm can reduce a circuit depth from the original HHL algorithm by means of...
Quantized Hodgkin-Huxley Model for Quantum Neurons
Xiao-Hang Cheng, Tasio Gonzalez-Raya, Xi Chen +2 more·Jul 27, 2018
The Hodgkin-Huxley model describes the behavior of the membrane voltage in neurons, treating each element of the cell membrane as an electric circuit element, namely capacitors, memristors and voltage sources. We focus on the activation channel of po...
Machine learning method for state preparation and gate synthesis on photonic quantum computers
J. Arrazola, T. Bromley, J. Izaac +3 more·Jul 27, 2018
We show how techniques from machine learning and optimization can be used to find circuits of photonic quantum computers that perform a desired transformation between input and output states. In the simplest case of a single input state, our method d...
Quantum Supremacy Is Both Closer and Farther than It Appears
I. Markov, Aneeqa Fatima, S. Isakov +1 more·Jul 27, 2018
As quantum computers improve in the number of qubits and fidelity, the question of when they surpass state-of-the-art classical computation for a well-defined computational task is attracting much attention. The leading candidate task for this milest...