IQI Weekly Seminar

Abstract: The problem of quantum spectroscopy, namely reconstruction of the frequency components of time dependent Hamiltonian, is of great interest to chemical analysis, nano scale NMR and frequency standards. In this talk I will address two (basic) questions in this field: what is the speed/precision limit in estimating a single frequency and how well can we resolve two close frequencies. It turns out that some misconceptions have led to suboptimal techniques and a considerable improvement can be introduced. Novel methods for frequency tracking [1,2] and frequency resolution [3] will be presented.

Based on a joint work with Alex Retzker and the group of Fedor Jelezko.

[1] Science 356.6340 (2017): 832-837

[2] Physical Review A 96.3 (2017): 032310

[3] arXiv:1811.01762 (2018)