A survey of quantum computing for finance

D Herman, C Googin, X Liu, A Galda, I Safro… - arXiv preprint arXiv …, 2022 - arxiv.org
Quantum computers are expected to surpass the computational capabilities of classical
computers during this decade and have transformative impact on numerous industry sectors …

Quadratic speedup for spatial search by continuous-time quantum walk

S Apers, S Chakraborty, L Novo, J Roland - Physical review letters, 2022 - APS
Continuous-time quantum walks provide a natural framework to tackle the fundamental
problem of finding a node among a set of marked nodes in a graph, known as spatial …

A unified framework of quantum walk search

S Apers, A Gilyén, S Jeffery - arXiv preprint arXiv:1912.04233, 2019 - arxiv.org
The main results on quantum walk search are scattered over different, incomparable
frameworks, most notably the hitting time framework, originally by Szegedy, the electric …

Implementing any linear combination of unitaries on intermediate-term quantum computers

S Chakraborty - Quantum, 2024 - quantum-journal.org
We develop three new methods to implement any Linear Combination of Unitaries (LCU), a
powerful quantum algorithmic tool with diverse applications. While the standard LCU …

Multidimensional quantum walks

S Jeffery, S Zur - Proceedings of the 55th Annual ACM Symposium on …, 2023 - dl.acm.org
While the quantum query complexity of k-distinctness is known to be O (n 3/4− 1/4 (2 k− 1))
for any constant k≥ 4 [Belovs, FOCS 2012], the best previous upper bound on the time …

Quantum-walk-based search algorithms with multiple marked vertices

GA Bezerra, PHG Lugão, R Portugal - Physical Review A, 2021 - APS
The quantum walk is a powerful tool to develop quantum algorithms, which usually are
based on searching for a vertex in a graph with multiple marked vertices, with Ambainis's …

Robust quantum walk search without knowing the number of marked vertices

Y Xu, D Zhang, L Li - Physical Review A, 2022 - APS
There has been a very large body of research on searching a marked vertex on a graph
based on quantum walks, and Grover's algorithm can be regarded as a quantum walk …

Lackadaisical discrete-time quantum walk on Johnson graph

F Peng, M Li, X Sun - Physica A: Statistical Mechanics and its Applications, 2024 - Elsevier
Quantum walk is widely used in search problems, and it has an ideal acceleration effect
compared with classical algorithm. Suppose there is a marked vertex w on Johnson graph J …

Optimality of spatial search via continuous-time quantum walks

S Chakraborty, L Novo, J Roland - Physical Review A, 2020 - APS
One of the most important algorithmic applications of quantum walks is to solve spatial
search problems. A widely used quantum algorithm for this problem, introduced by Childs …

Review on quantum walk algorithm

W Zhou - Journal of Physics: Conference Series, 2021 - iopscience.iop.org
Quantum walk is the quantum version of classical random walk, which has shown great
advantage over classical algorithms. In this article, main discoveries and breakthroughs …