Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Variational quantum classifiers through the lens of the Hessian
Pinaki Sen, A. Bhatia·May 21, 2021
In quantum computing, the variational quantum algorithms (VQAs) are well suited for finding optimal combinations of things in specific applications ranging from chemistry all the way to finance. The training of VQAs with gradient descent optimization...
Negational Symmetry of Quantum Neural Networks for Binary Pattern Classification
Nanqing Dong, Michael C. Kampffmeyer, I. Voiculescu +1 more·May 20, 2021
Entanglement is a physical phenomenon, which has fueled recent successes of quantum algorithms. Although quantum neural networks (QNNs) have shown promising results in solving simple machine learning tasks recently, for the time being, the effect of ...
Local and Global Quantum Gates
L. Weng·May 20, 2021
New theories on local p-adic and global adelic quantum gates are developed. In particular, the corresponding universality properties are established using only finitely many local/global quantum gates. 1 Quantum Computing Motivated by the theory of q...
Quantum Machine-Learning for Eigenstate Filtration in Two-Dimensional Materials.
M. Sajjan, S. Sureshbabu, S. Kais·May 20, 2021
Quantum machine-learning algorithms have emerged to be a promising alternative to their classical counterparts as they leverage the power of quantum computers. Such algorithms have been developed to solve problems like electronic structure calculatio...
Pulse-level noisy quantum circuits with QuTiP
Boxi Li, Shahnawaz Ahmed, Sidhant Saraogi +4 more·May 20, 2021
The study of the impact of noise on quantum circuits is especially relevant to guide the progress of Noisy Intermediate-Scale Quantum (NISQ) computing. In this paper, we address the pulse-level simulation of noisy quantum circuits with the Quantum To...
Quantum amplitude amplification operators: exact quantum search
Hyeokjea Kwon, J. Bae·May 20, 2021
Quantum search algorithms show quadratic speedups over their classical counterparts, and the speedup also turns out to be optimal. They share the common structure that an iteration contains two inversions, one with respect to a target state and the o...
The Prospects of Monte Carlo Antibody Loop Modelling on a Fault-Tolerant Quantum Computer
J. Allcock, A. Vangone, Agnes Meyder +4 more·May 20, 2021
Quantum computing for the biological sciences is an area of rapidly growing interest, but specific industrial applications remain elusive. Quantum Markov chain Monte Carlo has been proposed as a method for accelerating a broad class of computational ...
Hamiltonian Model for Fault Tolerant Singlet-Like Excitation: First Principles Approach
Donghyun Jin, Grihith Manchanda, D. Davidovic·May 20, 2021
Deriving quantum error correction and quantum control from the Schrodinger equation for a unified qubit-environment Hamiltonian will give insights into how microscopic degrees of freedom affect the capability to control and correct quantum informatio...
Holographic dynamics simulations with a trapped-ion quantum computer
E. Chertkov, J. Bohnet, David Francois +9 more·May 19, 2021
Quantum computers promise to efficiently simulate quantum dynamics, a classically intractable task central to fields ranging from chemistry to high-energy physics. Yet, quantum computational advantage has only been demonstrated for artificial tasks s...
Ab initio nuclear structure via quantum adiabatic algorithm
W. Du, J. Vary, Xingbo Zhao +1 more·May 19, 2021
Background: Solving nuclear many-body problems with an ab initio approach is widely recognized as a computationally challenging problem. Quantum computers offer a promising path to address this challenge. There are urgent needs to develop quantum alg...
Digitized adiabatic quantum factorization
N. N. Hegade, Koushik Paul, F. Albarr'an-Arriagada +2 more·May 19, 2021
Quantum integer factorization is a potential quantum computing solution that may revolutionize cryptography. Nevertheless, a scalable and efficient quantum algorithm for noisy intermediate-scale quantum computers looks far-fetched. We propose an alte...
Growth of Topological Insulator Bi2Se3 Particles on GaAs via Droplet Epitaxy
S. V. Mambakkam, Saadia Nasir, Wilder Acuna +2 more·May 18, 2021
The discovery of topological insulators (TIs) and their unique electronic properties has motivated research into a variety of applications, including quantum computing. It has been proposed that TI surface states will be energetically discretized in ...
Quantum imaginary time evolution steered by reinforcement learning
Chenfeng Cao, Zheng An, Shi-Yao Hou +2 more·May 18, 2021
The quantum imaginary time evolution is a powerful algorithm for preparing the ground and thermal states on near-term quantum devices. However, algorithmic errors induced by Trotterization and local approximation severely hinder its performance. Here...
Quantum algorithm for Feynman loop integrals
S. Ramírez-Uribe, A. Rentería-Olivo, G. Rodrigo +2 more·May 18, 2021
We present a novel benchmark application of a quantum algorithm to Feynman loop integrals. The two on-shell states of a Feynman propagator are identified with the two states of a qubit and a quantum algorithm is used to unfold the causal singular con...
Frequency measurements beyond the Heisenberg time-energy limit with a single atom
L. McGuinness·May 18, 2021
The Heisenberg time-energy relation prevents determination of an atomic transition to better than the inverse of the measurement time. The relation generally applies to frequency estimation of a near-resonant field [1-3], since information on the fie...
Generating time-domain linear cluster state by recycling superconducting qubits
S. Shirai, Yu Zhou, Keiichi Sakata +2 more·May 18, 2021
Cluster states, a type of highly entangled state, are essential resources for quantum information processing. Here we demonstrated the generation of a time-domain linear cluster state (t-LCS) using a superconducting quantum circuit consisting of only...
Time- and Query-optimal Quantum Algorithms Based on Decision Trees
Salman Beigi, Leila Taghavi, Artin Tajdini·May 18, 2021
It has recently been shown that starting with a classical query algorithm (decision tree) and a guessing algorithm that tries to predict the query answers, we can design a quantum algorithm with query complexity O(√ GT where T is the query complexity...
Many-body quantum chaos and dual-unitarity round-a-face.
T. Prosen·May 17, 2021
We propose a new type of locally interacting quantum circuits-quantum cellular automata-that are generated by unitary interactions round-a-face (IRF). Specifically, we discuss a set (or manifold) of dual-unitary IRFs with local Hilbert space dimensio...
Testing complementarity on a transmon quantum processor
P. M. Q. Cruz, J. Fern'andez-Rossier·May 17, 2021
We propose quantum circuits to test interferometric complementarity using symmetric two-way interferometers coupled to a which-path detector. First, we consider the two-qubit setup in which the controlled transfer of path information to the detector ...
Optimizing the walk coin in the quantum random walk search algorithm
Hristo Tonchev, Petar Danev·May 17, 2021
This paper examines the stability of the quantum random walk search algorithm, when the walk coin is constructed by generalized Householder reflection and additional phase shift, against inaccuracies in the phases used to construct the coin. The opti...