In this section
@article{Wang:2024:10.1038/s41467-024-53051-5,
author = {Wang, P and Kwon, H and Luan, C-Y and Chen, W and Qiao, M and Zhou, Z and Wang, K and Kim, MS and Kim, K},
doi = {10.1038/s41467-024-53051-5},
journal = {Nat Commun},
title = {Snapshotting quantum dynamics at multiple time points.},
url = {http://dx.doi.org/10.1038/s41467-024-53051-5},
volume = {15},
year = {2024}
}
TY - JOUR
AB - Measurement-induced state disturbance is a major challenge in obtaining quantum statistics at multiple time points. We propose a method to extract dynamic information from a quantum system at intermediate time points, namely snapshotting quantum dynamics. To this end, we apply classical post-processing after performing the ancilla-assisted measurements to cancel out the impact of the measurements at each time point. Based on this, we reconstruct a multi-time quasi-probability distribution (QPD) that correctly recovers the probability distributions at the respective time points. Our approach can also be applied to simultaneously extract exponentially many correlation functions with various time-orderings. We provide a proof-of-principle experimental demonstration of the proposed protocol using a dual-species trapped-ion system by employing 171Yb+ and 138Ba+ ions as the system and the ancilla, respectively. Multi-time measurements are performed by repeated initialization and detection of the ancilla state without directly measuring the system state. The two- and three-time QPDs and correlation functions are reconstructed reliably from the experiment, negativity and complex values in the QPDs clearly indicate a contribution of the quantum coherence throughout dynamics.
AU - Wang,P
AU - Kwon,H
AU - Luan,C-Y
AU - Chen,W
AU - Qiao,M
AU - Zhou,Z
AU - Wang,K
AU - Kim,MS
AU - Kim,K
DO - 10.1038/s41467-024-53051-5
PY - 2024///
TI - Snapshotting quantum dynamics at multiple time points.
T2 - Nat Commun
UR - http://dx.doi.org/10.1038/s41467-024-53051-5
UR - https://www.ncbi.nlm.nih.gov/pubmed/39406722
VL - 15
ER -