Figure 4: Time evolution of the optical signal in the quantum memory.
From: Synthetic-lattice enabled all-optical devices based on orbital angular momentum of light
(a) Control sequence for the phase imbalance in the auxiliary cavity and calculated output power normalized to the maximum intensity of the input pulse, assuming a Gaussian profile for the input pulse and no loss for all cavity modes except that due to the coupling to the input signal. 
with tp=2.5κ−1 and γj=δj,04κ. (b) Evolution of the optical signal’s distribution in the OAM lattices under the same assumption as in a. I is the field intensity. (c,d) The same as in a and b, except that losses of the cavity modes are taken into account by assuming γj=δj,04κ+0.2κe−|j|+0.01κ (Supplementary Notes 2 and 3).
