Adiabatic Generation of N-quNit Singlet States with Cavity QED

TL;DR

This paper proposes a robust, adiabatic method for generating N-quNit singlet states in cavity QED systems, minimizing decoherence and energy exchange to improve feasibility.

Contribution

It introduces a new scheme for creating N-quNit singlet states that is more feasible and robust than previous methods, utilizing dark states and ground state storage.

Findings

Robustness against parameter fluctuations and dissipation.

Reduced influence of atomic spontaneous emission and cavity decay.

Feasibility for N ≥ 3 in cavity QED systems.

Abstract

A theoretical scheme is presented for the adiabatic generation of N-quNit singlet states with $N\geqslant3$, which may be more feasible than previous ones in a cavity. In this proposal, the system may be robust both parameter fluctuations and dissipation along a dark state. In addition, quantum information is only stored in atomic ground states and there is no energy exchanged between atoms and photons in a cavity so as to reduce the influence of atomic spontaneous emission and cavity decays.