Efficient Quantum State Estimation by Continuous Weak Measurement and Dynamical Control
量子物理
2009-11-13 v1
摘要
We demonstrate a fast, robust and non-destructive protocol for quantum state estimation based on continuous weak measurement in the presence of a controlled dynamical evolution. Our experiment uses optically probed atomic spins as a testbed, and successfully reconstructs a range of trial states with fidelities of ~90%. The procedure holds promise as a practical diagnostic tool for the study of complex quantum dynamics, the testing of quantum hardware, and as a starting point for new types of quantum feedback control.
引用
@article{arxiv.quant-ph/0606115,
title = {Efficient Quantum State Estimation by Continuous Weak Measurement and Dynamical Control},
author = {Greg A. Smith and Andrew Silberfarb and Ivan H. Deutsch and Poul S. Jessen},
journal= {arXiv preprint arXiv:quant-ph/0606115},
year = {2009}
}
备注
4 pages, 3 figures