Figure 5: Simulated topological quantum phase transition and edge-state transport.
From: Quantum simulation of 2D topological physics in a 1D array of optical cavities
(a) Calculated band structure for 
with λ0=0.6κ. The value of β0 is 0, 0.075, and 0.125 from left to right. (b) Calculated photon transmission 
when β0=0. The first cavity in the simulator array is pumped by a probing light with li=0 and si=↔. The frequency of the probing light ω=−1.6κ is located in the first band gap. (c) The same as in b, except that the polarization of the probing light is changed to the other value, si=↕. (d) The same as in b, except that β0=0.125. (e) The same as in c, except that β0=0.125. In (b–e), the size of the simulator N=10. The OAM included in the calculation is l∈[−50,50]. Open and periodic boundary conditions are used in the x and y direction. The photon loss rate is γ=0.1κ.
