Efficient preparation and detection of microwave dressed-state qubits and qutrits with trapped ions

TL;DR

This paper presents a simplified method for preparing and detecting microwave dressed-state qubits and qutrits in trapped ions, enhancing quantum state control and noise protection for quantum computing applications.

Contribution

It introduces a novel technique that reduces experimental complexity and enables all eigenstates of a three-level dressed system to be prepared and detected in a single trapped ion.

Findings

All eigenstates of the dressed system can be prepared and detected.

The method allows individual addressing of clock transitions in multiple ions.

It demonstrates potential for controlling interactions in ion chains.

Abstract

We demonstrate a method for preparing and detecting all eigenstates of a three-level microwave dressed system with a single trapped ion. The method significantly reduces the experimental complexity of gate operations with dressed-state qubits, as well as allowing all three of the dressed-states to be prepared and detected, thereby providing access to a qutrit that is well protected from magnetic field noise. In addition, we demonstrate individual addressing of the clock transitions in two ions using a strong static magnetic field gradient, showing that our method can be used to prepare and detect microwave dressed-states in a string of ions when performing multi-ion quantum operations with microwave and radio frequency fields. The individual addressability of clock transitions could also allow for the control of pairwise interaction strengths between arbitrary ions in a string using lasers.