BibTex format

author = {Tang, H and Banchi, L and Wang, T-Y and Shang, X-W and Tan, X and Zhou, W-H and Feng, Z and Pal, A and Li, H and Hu, C-Q and Kim, MS and Jin, X-M},
doi = {10.1103/PhysRevLett.128.050503},
journal = {Physical Review Letters},
title = {Generating Haar-uniform randomness using stochastic quantum walks on a photonic chip},
url = {},
volume = {128},
year = {2022}

RIS format (EndNote, RefMan)

AB - As random operations for quantum systems are intensively used in various quantum information tasks, a trustworthy measure of the randomness in quantum operations is highly demanded. The Haar measure of randomness is a useful tool with wide applications, such as boson sampling. Recently, a theoretical protocol was proposed to combine quantum control theory and driven stochastic quantum walks to generate Haar-uniform random operations. This opens up a promising route to converting classical randomness to quantum randomness. Here, we implement a two-dimensional stochastic quantum walk on the integrated photonic chip and demonstrate that the average of all distribution profiles converges to the even distribution when the evolution length increases, suggesting the 1-pad Haar-uniform randomness. We further show that our two-dimensional array outperforms the one-dimensional array of the same number of waveguide for the speed of convergence. Our Letter demonstrates a scalable and robust way to generate Haar-uniform randomness that can provide useful building blocks to boost future quantum information techniques.
AU - Tang,H
AU - Banchi,L
AU - Wang,T-Y
AU - Shang,X-W
AU - Tan,X
AU - Zhou,W-H
AU - Feng,Z
AU - Pal,A
AU - Li,H
AU - Hu,C-Q
AU - Kim,MS
AU - Jin,X-M
DO - 10.1103/PhysRevLett.128.050503
PY - 2022///
SN - 0031-9007
TI - Generating Haar-uniform randomness using stochastic quantum walks on a photonic chip
T2 - Physical Review Letters
UR -
UR -
UR -
VL - 128
ER -