Papers

Zhide Lu, Pei-Xin Shen, D. Deng·Dec 30, 2020

Neuroevolution, a field that draws inspiration from the evolution of brains in nature, harnesses evolutionary algorithms to construct artificial neural networks. It bears a number of intriguing capabilities that are typically inaccessible to gradient...

Lorenzo Magrini, Philipp Rosenzweig, Constanze Bach +6 more·Dec 30, 2020

The ability to accurately control the dynamics of physical systems by measurement and feedback is a pillar of modern engineering1. Today, the increasing demand for applied quantum technologies requires adaptation of this level of control to individua...

E. Mascot, M. Nozaki, Masaki Tezuka·Dec 29, 2020

Understanding how and whether local perturbations can affect the entire quantum system is a fundamental step in understanding non-equilibrium phenomena such as thermalization. This knowledge of non-equilibrium phenomena is applicable for quantum comp...

Constantin Dalyac, L. Henriet, E. Jeandel +4 more·Dec 29, 2020

In order to qualify quantum algorithms for industrial NP-Hard problems, comparing them to available polynomial approximate classical algorithms and not only to exact exponential ones is necessary. This is a great challenge as, in many cases, bounds o...

David H. Wei·Dec 28, 2020

It is shown that a particular class of so-called strongly frustration-free manybody Hamiltonians can be Monte Carlo simulated efficiently on a classical computing machine, because the ground state of such a Hamiltonian is locally determined in the se...

Anandu Kalleri Madhu, A. Melnikov, Leonid Fedichkin +2 more·Dec 28, 2020

Simulation and programming of current quantum computers as Noisy Intermediate-Scale Quantum (NISQ) devices represent a hot topic at the border of current physical and information sciences. The quantum walk process represents a basic subroutine in man...

Kun Wang, Zhixin Song, Xuanqiang Zhao +2 more·Dec 28, 2020

Quantum entanglement is a key resource in quantum technology, and its quantification is a vital task in the current noisy intermediate-scale quantum (NISQ) era. This paper combines hybrid quantum-classical computation and quasi-probability decomposit...

D. Pires, Y. Omar, J. Seixas·Dec 28, 2020

The currently predicted increase in computational demand for the upcoming High-Luminosity Large Hadron Collider (HL-LHC) event reconstruction, and in particular jet clustering, is bound to challenge present day computing resources, becoming an even m...

Keiichiro Furuya, Nima Lashkari, Shoy Ouseph·Dec 27, 2020

There are two parts to this work: first, we study the error correction properties of the real-space renormalization group (RG). The long-distance operators are the (approximately) correctable operators encoded in the physical algebra of short-distanc...

Zheng Tan, Patrice A. Camati, Guillaume Coeuret Cauquil +2 more·Dec 25, 2020

We theoretically derive and experimentally compare several different ways to access entropy production in a quantum process under feedback control. We focus on a bipartite quantum system realizing an autonomous Maxwell’s demon scheme reported by Naje...

Zhaoxu Ji, Huanguo Zhang·Dec 24, 2020

Entanglement-measurement attack is one of the most famous attacks against quantum cryptography. In quantum cryptography protocols, eavesdropping checking is an effective means to resist this attack. There are currently two commonly used eavesdropping...

Anthony Bordg, Hanna Lachnitt, Yijun He·Dec 24, 2020

In this article we present an ongoing effort to formalise quantum algorithms and results in quantum information theory using the proof assistant Isabelle/HOL. Formal methods being critical for the safety and security of algorithms and protocols, we f...

Xijia Miao·Dec 24, 2020

The HSSS quantum search process owns the dual character that it obeys both the unitary quantum dynamics and the mathematical-logical principle of the unstructured search problem. It is essentially different from a conventional quantum search algorith...

Elisabeth Lobe, L. Schürmann, T. Stollenwerk·Dec 23, 2020

In order to solve real-world combinatorial optimization problems with a D-Wave quantum annealer, it is necessary to embed the problem at hand into the D-Wave hardware graph, namely Chimera or Pegasus. Most hard real-world problems exhibit a strong co...

Lucas J. Mensen, B. Baragiola, N. Menicucci·Dec 23, 2020

The Gottesman-Kitaev-Preskill (GKP) encoding of a qubit into a bosonic mode is a promising bosonic code for quantum computation due to its tolerance for noise and all-Gaussian gate set. We present a toolkit for phase-space description and manipulatio...

T. Patti, K. Najafi, Xun Gao +1 more·Dec 23, 2020

Hybrid quantum-classical variational algorithms are one of the most propitious implementations of quantum computing on near-term devices, offering classical machine learning support to quantum scale solution spaces. However, numerous studies have dem...

J. Orrell, B. Loer·Dec 23, 2020

We propose a method to assist fault mitigation in quantum computation through the use of sensors co-located near physical qubits. Specifically, we consider using transition edge sensors colocated on silicon substrates hosting superconducting qubits t...

L. Franken, B. Georgiev, Sascha Mucke +4 more·Dec 23, 2020

Variational quantum circuits build the foundation for various classes of quantum algorithms. In a nutshell, the weights of a parametrized quantum circuit are varied until the empirical sampling distribution of the circuit is sufficiently close to a d...

S. Ebadi, Tout T. Wang, H. Levine +12 more·Dec 22, 2020

Motivated by far-reaching applications ranging from quantum simulations of complex processes in physics and chemistry to quantum information processing1, a broad effort is currently underway to build large-scale programmable quantum systems. Such sys...

Alan C. Santos·Dec 22, 2020

Devices that use quantum advantages for storing energy in the degree of freedom of quantum systems have drawn attention due to their properties of working as quantum batteries (QBs). However, one can identify a number of problems that need to be adeq...