Abstract We investigate the thermalization of Sachdev–Ye–Kitaev (SYK) models coupled via random interactions following quenches from perspective entanglement. Previous studies have shown that when a system two SYK by two-body terms is quenched thermofield double state with sufficiently low effective temperature, Rényi entropies do not saturate to expected thermal values in large- N limit. Using...

Randomly-coupled multi-core fiber (MCF) technology has come to attract lots of attention because its strong applicability long-haul transmission systems. Compared with weakly-coupled MCFs independent cores, it can simultaneously realize higher spatial channel density and ultralow loss using existing ultralow-loss single-mode (SMF) core designs. The mode coupling characteristics randomly-coupled...