Fig. 5: STIRAP process for the generation of multi-spin one-excitation Dicke states \({D}_{1}^{N}\), where N is the number of spins.
From: Hybrid spin-phonon architecture for scalable solid-state quantum nodes
a Pulse sequence for the adiabatic process, similar to the first half of Fig. 4a, but without the center plateau. b Generation of \({D}_{1}^{2}=\left(\left\vert {g}_{2}{g}_{1}\right\rangle +\left\vert {g}_{1}{g}_{2}\right\rangle \right)/\sqrt{2}\) in 3927 ns, with a fidelity \({\mathcal{F}}={\rm{tr}}\left({\rho }_{{\rm{ideal}}}\rho \right)=99.35 \%\). c Generation of \({D}_{1}^{3}=\left(\left\vert {g}_{2}{g}_{1}{g}_{1}\right\rangle +\left\vert {g}_{1}{g}_{2}{g}_{1}\right\rangle +\left\vert {g}_{1}{g}_{1}{g}_{2}\right\rangle \right)/\sqrt{3}\) in 2777 ns, with a fidelity \({\mathcal{F}}={\rm{tr}}\left({\rho }_{{\rm{ideal}}}\rho \right)=99.36 \%\). System parameters are the same as the implementation of the CZ gate.
