Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,714
This Month
152
Today
0
Research Volume
15,749 papers in 12 months (-37% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Computational Investigations of the Lithium Superoxide Dimer Rearrangement on Noisy Quantum Devices.
Qi Gao, Hajime Nakamura, Tanvi P. Gujarati +6 more·Jun 25, 2019
Quantum chemistry studies of biradical systems are challenging due to the required multiconfigurational nature of the wavefunction. In this work, Variational Quantum Eigensolver (VQE) is used to compute the energy profile for the lithium superoxide d...
Machine Learning Phase Transitions with a Quantum Processor
A. Uvarov, A. Kardashin, J. Biamonte·Jun 24, 2019
Machine learning has emerged as a promising approach to unveil properties of many-body systems. Recently proposed as a tool to classify phases of matter, the approach relies on classical simulation methods---such as Monte Carlo---which are known to e...
Logistic Network Design with a D-Wave Quantum Annealer
Yongcheng Ding, Xi Chen, L. Lamata +2 more·Jun 24, 2019
Logistic network design is an abstract optimization problem which, under the assumption of minimal cost, determines the optimal configuration of infrastructures and facilities of the supply chain based on customer demand. With the solutions at hand, ...
Quantum-Assisted Genetic Algorithm
James King, M. Mohseni, William Bernoudy +5 more·Jun 24, 2019
Genetic algorithms, which mimic evolutionary processes to solve optimization problems, can be enhanced by using powerful semi-local search algorithms as mutation operators. Here, we introduce reverse quantum annealing, a class of quantum evolutions t...
Quasiexact Kondo Dynamics of Fermionic Alkaline-Earth-Like Atoms at Finite Temperatures.
S. Goto, I. Danshita·Jun 21, 2019
A recent experiment has observed the antiferromagnetic interaction between the ground state ^{1}S_{0} and the metastable state ^{3}P_{0} of ^{171}Yb atoms, which are fermionic. This observation combined with the use of state-dependent optical lattice...
ROS: Resource-constrained Oracle Synthesis for Quantum Computers
Giulia Meuli, Mathias Soeken, Martin Rötteler +1 more·Jun 21, 2019
We present a completely automatic synthesis framework for oracle functions, a central part in many quantum algorithms. The proposed framework for resource-constrained oracle synthesis (ROS) is a LUT-based hierarchical method in which every step is sp...
Quantum Annealing: a journey through Digitalization, Control, and hybrid Quantum Variational schemes
G. Mbeng, R. Fazio, G. Santoro·Jun 21, 2019
We establish and discuss a number of connections between a digitized version of Quantum Annealing (QA) with the Quantum Approximate Optimization Algorithm (QAOA) introduced by Farhi et al. (arXiv:1411.4028) as an alternative hybrid quantum-classical ...
Variational Quantum Fidelity Estimation
M. Cerezo, Alexander Poremba, L. Cincio +1 more·Jun 21, 2019
Computing quantum state fidelity will be important to verify and characterize states prepared on a quantum computer. In this work, we propose novel lower and upper bounds for the fidelity F(ρ,σ) based on the ``truncated fidelity'' F(ρm,σ), which is e...
Deterministic generation of a two-dimensional cluster state
M. V. Larsen, Xueshi Guo, Casper R. Breum +2 more·Jun 20, 2019
Generating large-scale cluster states The development of a practical quantum computer requires universality, scalability, and fault tolerance. Although much progress is being made in circuit platforms in which arrays of qubits are addressed and manip...
Generation of hybrid maximally entangled states in a one-dimensional quantum walk
A. Gratsea, M. Lewenstein, A. Dauphin·Jun 20, 2019
We study the generation of hybrid entanglement in a one-dimensional quantum walk. In particular, we explore the preparation of maximally entangled states between position and spin degrees of freedom. We address it as an optimization problem, where th...
Local vs global master equation with common and separate baths: superiority of the global approach in partial secular approximation
M. Cattaneo, G. Giorgi, S. Maniscalco +1 more·Jun 20, 2019
Open systems of coupled qubits are ubiquitous in quantum physics. Finding a suitable master equation to describe their dynamics is therefore a crucial task that must be addressed with utmost attention. In the recent past, many efforts have been made ...
Hybrid Quantum/Classical Derivative Theory: Analytical Gradients and Excited-State Dynamics for the Multistate Contracted Variational Quantum Eigensolver
R. Parrish, E. Hohenstein, P. McMahon +1 more·Jun 20, 2019
The maturation of analytical derivative theory over the past few decades has enabled classical electronic structure theory to provide accurate and efficient predictions of a wide variety of observable properties. However, classical implementations of...
OpenSurgery for Topological Assemblies
A. Paler, A. Fowler·Jun 19, 2019
Surface quantum error-correcting codes are the leading proposal for fault-tolerance within quantum computers. We present OpenSurgery, a scalable tool for the preparation of circuits protected by the surface code operated through lattice surgery. Latt...
Quantum Supremacy in Cryptography with a Low-Connectivity Quantum Annealer
Feng Hu, L. Lamata, Chao Wang +3 more·Jun 19, 2019
The application in cryptography of quantum algorithms for prime factorization fostered the interest in quantum computing. However, quantum computers, and particularly quantum annealers, can also be helpful to construct secure cryptographic keys. Inde...
High-fidelity single-qubit gates in a strongly driven quantum-dot hybrid qubit with1/fcharge noise
Yuan-Chi Yang, S. Coppersmith, M. Friesen·Jun 19, 2019
Semiconductor double quantum dot hybrid qubits are promising candidates for high-fidelity quantum computing. However, their performance is limited by charge noise, which is ubiquitous in solid-state devices, and phonon-induced dephasing. Here we expl...
Digital-analog quantum algorithm for the quantum Fourier transform
Ana Martin, L. Lamata, E. Solano +1 more·Jun 18, 2019
Quantum computers will allow calculations beyond existing classical computers. However, current technology is still too noisy and imperfect to construct a universal digital quantum computer with quantum error correction. Inspired by the evolution of ...
Efficient partition of integer optimization problems with one-hot encoding
Shuntaro Okada, Masayuki Ohzeki, S. Taguchi·Jun 18, 2019
Quantum annealing is a heuristic algorithm for solving combinatorial optimization problems, and hardware for implementing this algorithm has been developed by D-Wave Systems Inc. The current version of the D-Wave quantum annealer can solve unconstrai...
Review of a Quantum Algorithm for Betti Numbers
S. Gunn, Niels Kornerup·Jun 18, 2019
We looked into the algorithm for calculating Betti numbers presented by Lloyd, Garnerone, and Zanardi (LGZ). We present a new algorithm in the same spirit as LGZ with the intent of clarifying quantum algorithms for computing Betti numbers. Our algori...
Approaching graph problems with continuous variable quantum computing.
Michal Stkechly, N. Bashige, Przemyslaw Chojecki·Jun 17, 2019
We introduce a method for solving the Max-Cut problem using a variational algorithm and a continuous-variables quantum computing approach. The quantum circuit consists of two parts: the first one embeds a graph into a circuit using the Takagi decompo...
Time-dependent Hamiltonian simulation with $L^1$-norm scaling
D. Berry, Andrew M. Childs, Yuan Su +2 more·Jun 17, 2019
The difficulty of simulating quantum dynamics depends on the norm of the Hamiltonian. When the Hamiltonian varies with time, the simulation complexity should only depend on this quantity instantaneously. We develop quantum simulation algorithms that ...