Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,735 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Performance of hybrid quantum/classical variational heuristics for combinatorial optimization
G. Nannicini·May 30, 2018
The recent literature on near-term applications for quantum computers contains several examples of the applications of hybrid quantum-classical variational approaches. This methodology can be applied to a variety of optimization problems, but its pra...
Gradient-based closed-loop quantum optimal control in a solid-state two-qubit system
Guanru Feng, F. Cho, Hemant Katiyar +4 more·May 29, 2018
Quantum optimal control can play a crucial role to realize a set of universal quantum logic gates with error rates below the threshold required for fault-tolerance. Open-loop quantum optimal control relies on accurate modeling of the quantum system u...
Quantum analog-digital conversion
K. Mitarai, M. Kitagawa, K. Fujii·May 29, 2018
Many quantum algorithms, such as Harrow-Hassidim-Lloyd (HHL) algorithm, depend on oracles that efficiently encode classical data into a quantum state. The encoding of the data can be categorized into two types; analog-encoding where the data are stor...
Mapping of lattice surgery-based quantum circuits on surface code architectures
L. Lao, B. Wee, I. Ashraf +4 more·May 28, 2018
Quantum error correction (QEC) and fault-tolerant (FT) mechanisms are essential for reliable quantum computing. However, QEC considerably increases the computation size up to four orders of magnitude. Moreover, FT implementation has specific requirem...
Tunable coupling between a superconducting resonator and an artificial atom
Qi-Kai He, Duan-Lu Zhou·May 28, 2018
Abstract Coherent manipulation of a quantum system is one of the main themes in current physics researches. In this work, we design a circuit QED system with a tunable coupling between an artificial atom and a superconducting resonator while keeping ...
8×8 reconfigurable quantum photonic processor based on silicon nitride waveguides.
C. Taballione, T. Wolterink, J. Lugani +10 more·May 28, 2018
The development of large-scale optical quantum information processing circuits ground on the stability and reconfigurability enabled by integrated photonics. We demonstrate a reconfigurable 8×8 integrated linear optical network based on silicon nitri...
Efficient quantum algorithm for solving travelling salesman problem: An IBM quantum experience
K. Srinivasan, Saipriya Satyajit, B. K. Behera +1 more·May 28, 2018
The famous Travelling Salesman Problem (TSP) is an important category of optimization problems that is mostly encountered in various areas of science and engineering. Studying optimization problems motivates to develop advanced techniques more suited...
Bayesian Quantum Circuit
Yuxuan Du, Tongliang Liu, D. Tao·May 27, 2018
Parameterized quantum circuits (PQCs), as one of the most promising schemes to realize quantum machine learning algorithms on near-term quantum computers, have been designed to solve machine earning tasks with quantum advantages. In this paper, we ex...
Exact search algorithm to factorize large biprimes and a triprime on IBM quantum computer
Avinash Dash, D. Sarmah, B. K. Behera +1 more·May 26, 2018
Factoring large integers using a quantum computer is an outstanding research problem that can illustrate true quantum advantage over classical computers. Exponential time order is required in order to find the prime factors of an integer by means of ...
Quantum Algorithms for Systems of Linear Equations Inspired by Adiabatic Quantum Computing.
Yiğit Subaşı, R. Somma, Davide Orsucci·May 26, 2018
We present two quantum algorithms based on evolution randomization, a simple variant of adiabatic quantum computing, to prepare a quantum state |x⟩ that is proportional to the solution of the system of linear equations Ax[over →]=b[over →]. The time ...
Not All Qubits Are Created Equal: A Case for Variability-Aware Policies for NISQ-Era Quantum Computers
Swamit S. Tannu, Moinuddin K. Qureshi·May 25, 2018
Existing and near-term quantum computers are not yet large enough to support fault-tolerance. Such systems with few tens to few hundreds of qubits are termed as Noisy Intermediate Scale Quantum computers (NISQ), and these systems can provide benefits...
High-fidelity non-adiabatic cutting and stitching of a spin chain via local control
Pavlo V. Pyshkin, E. Sherman, J. You +1 more·May 25, 2018
We propose and analyze, focusing on non-adiabatic effects, a technique of manipulating quantum spin systems based on local ‘cutting’ and ‘stitching’ of the Heisenberg exchange coupling between the spins. This first operation is cutting of a bond sepa...
Digital quantum computation of fermion-boson interacting systems
A. Macridin, P. Spentzouris, J. Amundson +1 more·May 24, 2018
We introduce a method for representing the low-energy subspace of a bosonic field theory on the qubit space of digital quantum computers. This discretization leads to an exponentially precise description of the subspace of the continuous theory thank...
cQASM v1.0: Towards a Common Quantum Assembly Language
N. Khammassi, G. Guerreschi, I. Ashraf +3 more·May 24, 2018
The quantum assembly language (QASM) is a popular intermediate representation used in many quantum compilation and simulation tools to describe quantum circuits. Currently, multiple different dialects of QASM are used in different quantum computing t...
Quantum error correction and universal gate set operation on a binomial bosonic logical qubit
Ling Hu, Yuwei Ma, W. Cai +10 more·May 23, 2018
Logical qubit encoding and quantum error correction (QEC) protocols have been experimentally demonstrated in various physical systems with multiple physical qubits, generally without reaching the break-even point, at which the lifetime of the quantum...
Networked Control Systems Secured by Quantum Key Distribution
Haijin Ding, R. Wu, Qian Zhao·May 23, 2018
Cyber-security has become vital for modern networked control systems (NCS). In this paper, we propose that the emerging technology of quantum key distribution (QKD) can be applied to enhance the privacy and security of NCS up to an unbreakable level....
Operator dynamics in a Brownian quantum circuit.
Tianci Zhou, Xiao Chen·May 23, 2018
We view the operator spreading in chaotic evolution as a stochastic process of height growth. The height of an operator represents the size of its support and chaotic evolution increases the height. We consider N-spin models with all two-body interac...
Hybrid Programming for Near-Term Quantum Computing Systems
A. McCaskey, E. Dumitrescu, D. Liakh +1 more·May 23, 2018
Recent computations involving quantum processing units (QPUs)have demonstrated a series of challenges inherent to hybrid classical-quantum programming, compilation, execution, and verification and validation. Despite considerable progress, system-lev...
Quantum error-correcting codes: the unit design strategy
T. Hurley, Donny Hurley, B. Hurley·May 23, 2018
A series of maximum distance quantum error-correcting codes are developed and analysed. For a given rate and given error-correction capability, quantum error-correcting codes with these specifications are constructed. The codes are explicit with effi...
A theory of single-shot error correction for adversarial noise
E. Campbell·May 23, 2018
Single-shot error correction is a technique for correcting physical errors using only a single round of noisy check measurements, such that any residual noise affects a small number of qubits. We propose a general theory of single-shot error correcti...