Quantum dynamics of trapped ions in a dynamic field gradient using dressed states

TL;DR

This paper demonstrates that using dressed states in a dynamic magnetic gradient field simplifies the experimental setup for rf-driven trapped ion quantum computing, potentially advancing scalable quantum information devices.

Contribution

It shows that the coupling mechanism remains consistent in a dressed state basis with dynamic gradients and proposes methods to overcome experimental challenges.

Findings

Coupling mechanism in dynamic gradient matches static case in dressed states

Dynamic gradients can be used with dressed states to reduce experimental complexity

Potential pathway to scalable rf-driven trapped ion quantum devices

Abstract

Novel ion traps that provide either a static or a dynamic magnetic gradient field allow for the use of radio frequency (rf) radiation for coupling internal and motional states of ions, which is essential for conditional quantum logic. We show that the coupling mechanism in the presence of a dynamic gradient is the same, in a dressed state basis, as in the case of a static gradient. Then, it is shown how demanding experimental requirements arising when using a dynamic gradient could be overcome. Thus, using dressed states in a dynamic gradient field could decisively reduce experimental complexity on the route towards a scalable device for quantum information science based on rf-driven trapped ions.