Perfect revivals of Rabi oscillations and hybrid Bell states in a trapped ion

TL;DR

This paper demonstrates perfect revivals of Rabi oscillations in a trapped ion, enabling the natural generation of Schrödinger cat states and Bell states through unitary dynamics, with potential applications in quantum information processing.

Contribution

It reveals conditions for perfect Rabi oscillation revivals and introduces a method to generate entangled Bell states from Schrödinger cat states in trapped ions.

Findings

Perfect revivals of Rabi oscillations are achievable in trapped ions.

Schrödinger cat states are naturally generated by the system's dynamics.

Interaction leads to the formation of Bell states from entangled Schrödinger cat states.

Abstract

We show that perfect revivals of Rabi oscillations are possible, under certain conditions, in the population inversion of a trapped ion. Based on this property, we find that Schr\"odinger cat states of the atomic motion are naturally generated by the unitary dynamics. Using a pair of symmetric and antisymmetric Schr\"odinger cat states of the motion, together with an electronic excited or ground state, we find that the interaction leads to four orthonormal maximally entangled states of the two partitions, which we identify as Bell states. We also study a quadratic Kerr-type evolution that is possible for short interaction times.