Temperature-independent quantum logic for molecular spectroscopy

TL;DR

This paper introduces a rapid, non-destructive quantum logic spectroscopy technique for single molecular ions, enabling precise measurement of various molecular degrees of freedom through hybrid atomic-molecular ion manipulation.

Contribution

It presents a novel hybrid quantum logic method that allows for temperature-independent, non-destructive spectroscopy of single molecular ions using atomic ion interactions.

Findings

Enables non-destructive spectroscopy of molecular ions

Uses hybrid coherent manipulation with optical or magnetic forces

Applicable to Zeeman, rotational, vibrational, and electronic levels

Abstract

We propose a fast and non-destructive spectroscopic method for single molecular ions that implements quantum logic schemes between an atomic ion and the molecular ion of interest. Our proposal relies on a hybrid coherent manipulation of the two-ion system, using optical or magnetic forces depending on the types of molecular levels to be addressed (Zeeman, rotational, vibrational or electronic degrees of freedom). The method is especially suited for the non-destructive precision spectroscopy of single molecular ions, and sets a starting point for new hybrid quantum computation schemes that combine molecular and atomic ions, covering the measurement and entangling steps.