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
Quantum computing for accelerating cross-correlations intensive applications in signal processing
V. C. Vivoli, Yu-Hao Deng, Kohr Holger +1 more·Aug 26, 2019
Despite their importance as subfields of mathematics and engineering, signal and image processing have not received much attention in the field of quantum computation. Cross-correlations are instrumental to all the aforementioned fields. In this arti...
Variational quantum algorithm for nonequilibrium steady states
N. Yoshioka, Yuya O. Nakagawa, K. Mitarai +1 more·Aug 26, 2019
We propose a quantum-classical hybrid algorithm to simulate the non-equilibrium steady state of an open quantum many-body system, named the dissipative-system Variational Quantum Eigensolver (dVQE). To employ the variational optimization technique fo...
Short-depth trial-wavefunctions for the variational quantum eigensolver based on the problem Hamiltonian
G. Salis, N. Moll·Aug 26, 2019
For the variational quantum eigensolver we propose to generate trial wavefunctions from a small amount of selected Pauli terms of the problem Hamiltonian. Two different approaches, one inspired by the quantum approximate optimization algorithm and th...
Detecting crosstalk errors in quantum information processors
M. Sarovar, T. Proctor, K. Rudinger +3 more·Aug 26, 2019
Crosstalk occurs in most quantum computing systems with more than one qubit. It can cause a variety of correlated and nonlocal crosstalk errors that can be especially harmful to fault-tolerant quantum error correction, which generally relies on error...
Holographic Code Rate
N. Bray-Ali, David Chester, Dugan Hammock +3 more·Aug 25, 2019
Holographic codes grown with perfect tensors on regular hyperbolic tessellations using an inflation rule protect quantum information stored in the bulk from errors on the boundary provided the code rate is less than one. Hyperbolic geometry bounds th...
Quantum Phase Control by Electric Field in a Rare-Earth Material
Zheng Liu, Yuhui Fang, Siying Qin +3 more·Aug 25, 2019
Manipulating quantum properties by electric fields promises individual spin addressability and energy efficiency compared to magnetic control. The electric field couples directly to the electron charge and can thereby control the spin dynamics via sp...
Measurement-induced randomness and structure in controlled qubit processes.
A. Venegas-Li, Alexandra M. Jurgens, J. Crutchfield·Aug 24, 2019
When an experimentalist measures a time series of qubits, the outcomes constitute a classical stochastic process. We show that projective measurement induces high complexity in these processes in two specific senses: They are inherently random (finit...
Quantum algorithms for jet clustering
Annie Y. Wei, Preksha Naik, A. Harrow +1 more·Aug 23, 2019
Identifying jets formed in high-energy particle collisions requires solving optimization problems over potentially large numbers of final-state particles. In this work, we consider the possibility of using quantum computers to speed up jet clustering...
Contract-based verification of a realistic quantum compiler
Yunong Shi, Xupeng Li, Runzhou Tao +4 more·Aug 23, 2019
In this paper, we present CertiQ, a mostly-automated verification framework for the Qiskit quantum compiler. To our knowledge, CertiQ is the first effort to apply formal verification and SMT reasoning to a real-world quantum compiler. Qiskit is curre...
Quantum Circuit Transformation Based on Simulated Annealing and Heuristic Search
Xiang-Yu Zhou, Sanjiang Li, Yuan Feng·Aug 23, 2019
Quantum algorithm design usually assumes access to a perfect quantum computer with ideal properties like full connectivity, noise-freedom, and arbitrarily long coherence time. In noisy intermediate-scale quantum (NISQ) devices, however, the number of...
Training the quantum approximate optimization algorithm without access to a quantum processing unit
Michael Streif, M. Leib·Aug 23, 2019
In this paper, we eliminate the classical outer learning loop of the quantum approximate optimization algorithm (QAOA) and present a strategy to find good parameters for QAOA based on topological arguments of the problem graph and tensor network tech...
Conditional teleportation of quantum-dot spin states
Haifeng Qiao, Y. Kandel, S. Manikandan +5 more·Aug 22, 2019
Among the different platforms for quantum information processing, individual electron spins in semiconductor quantum dots stand out for their long coherence times and potential for scalable fabrication. The past years have witnessed substantial progr...
Variational Spin-Squeezing Algorithms on Programmable Quantum Sensors.
Raphael Kaubruegger, P. Silvi, C. Kokail +5 more·Aug 22, 2019
Arrays of atoms trapped in optical tweezers combine features of programmable analog quantum simulators with atomic quantum sensors. Here we propose variational quantum algorithms, tailored for tweezer arrays as programmable quantum sensors, capable o...
Quantum Algorithms for Portfolio Optimization
Iordanis Kerenidis, A. Prakash, Dániel Szilágyi·Aug 22, 2019
We develop the first quantum algorithm for the constrained portfolio optimization problem. The algorithm has running time Õ (n√r ζk/δ2 log (1/ϵ)), where r is the number of positivity and budget constraints, n is the number of assets in the portfolio,...
Optimal control for the quantum simulation of nuclear dynamics
E. Holland, K. Wendt, K. Kravvaris +6 more·Aug 22, 2019
We propose a method for enacting the unitary time propagation of two interacting neutrons at leading order of chiral effective-field theory by efficiently encoding the nuclear dynamics into a single multilevel quantum device. The emulated output of t...
Experimental investigation of Markovian and non-Markovian channel addition
S. Uriri, F. Wudarski, I. Sinayskiy +2 more·Aug 21, 2019
The study of memory effects in quantum channels helps in developing characterization methods for open quantum systems and strategies for quantum error correction. Two main sets of channels exist, corresponding to system dynamics with no memory (Marko...
Measurement reduction in variational quantum algorithms
Andrew Zhao, A. Tranter, William M. Kirby +3 more·Aug 21, 2019
Variational quantum algorithms are promising applications of noisy intermediate-scale quantum (NISQ) computers. These algorithms consist of a number of separate prepare-and-measure experiments that estimate terms in a Hamiltonian. The number of terms...
A Full Quantum Eigensolver for Quantum Chemistry Simulations
Shijie Wei, Hang Li, Guilu Long·Aug 21, 2019
Quantum simulation of quantum chemistry is one of the most compelling applications of quantum computing. It is of particular importance in areas ranging from materials science, biochemistry, and condensed matter physics. Here, we propose a full quant...
Enhancing Quantum Control by Improving Shaped-Pulse Generation
J. P. S. Peterson, R. Sarthour, R. Laflamme·Aug 21, 2019
Most quantum processors requires pulse sequences for controlling quantum states. Here, we present an alternative algorithm for computing an optimal pulse sequence in order to perform a specific task, being an implementation of a quantum gate or a qua...
Many-body systems as resources for universal fault tolerant quantum computation
S. Sarkar, Chiranjib Mukhopadhyay, A. Bayat·Aug 21, 2019
A universal quantum computer will inevitably rely on error correction to be fault tolerant. Most error correcting schemes are based on stabilizer circuits which fail to provide universal quantum computation. An extra quantum resource, in the form of ...