Adiabatic passage for three-dimensional entanglement generation through quantum Zeno dynamics

TL;DR

This paper introduces an adiabatic passage method utilizing quantum Zeno dynamics to efficiently generate three-dimensional entanglement between two atoms in separate cavities, minimizing losses and robust against decoherence.

Contribution

It presents a novel, resonant interaction-based scheme for high-dimensional entanglement generation that reduces operation time and suppresses losses compared to dispersive protocols.

Findings

The scheme is robust against cavity decay and atomic spontaneous emission.

Numerical simulations confirm high fidelity and efficiency.

The method can be extended to N-atom and higher-dimensional entanglement.

Abstract

We propose an adiabatic passage approach to generate two atoms three- dimensional entanglement with the help of quantum Zeno dynamics in a time- dependent interacting field. The atoms are trapped in two spatially separated cavi- ties connected by a fiber, so that the individual addressing is needless. Because the scheme is based on the resonant interaction, the time required to generate entangle- ment is greatly shortened. Since the fields remain in vacuum state and all the atoms are in the ground states, the losses due to the excitation of photons and the spon- taneous transition of atoms are suppressed efficiently compared with the dispersive protocols. Numerical simulation results show that the scheme is robust against the decoherences caused by the cavity decay and atomic spontaneous emission. Addi- tionally, the scheme can be generalized to generate N-atom three-dimensional en- tanglement and high-dimensional entanglement for two spatially separated atoms.