Back to Search Start Over

Dynamic-Disorder-Induced Enhancement of Entanglement in Photonic Quantum Walks

Authors :
Geng Chen
Guang-Can Guo
Jin-Shi Xu
Qin-Qin Wang
Yong-Jian Han
Chuan-Feng Li
Xiao-Ye Xu
Wei-Wei Pan
Kai Sun
Publication Year :
2018
Publisher :
arXiv, 2018.

Abstract

Entanglement generation in discrete time quantum walks is deemed to be another key property beyond the transport behaviors. The latter has been widely used in investigating the localization or topology in quantum walks. However, there are few experiments involving the former for the challenges in full reconstruction of the final wave function. Here, we report an experiment demonstrating the enhancement of the entanglement in quantum walks using dynamic disorder. Through reconstructing the local spinor state for each site, von Neumann entropy can be obtained and used to quantify the coin-position entanglement. We find that the enhanced entanglement in the dynamically disordered quantum walks is independent of the initial state, which is different from the entanglement generation in the Hadamard quantum walks. Our results are inspirational for achieving quantum computing based on quantum walks.<br />Comment: 18 pages, 6 figures. arXiv admin note: text overlap with arXiv:1808.09278

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....dc496d5dac670fb2a618b20ebabba6fd
Full Text :
https://doi.org/10.48550/arxiv.1808.09298