Order by disorder in a quantum annealer

Quantum annealers offer the possibility of simulating theoretical phenomena in ideal models which are tricky to observe in typical settings due to complications such as disorder and temperature. One such example is quantum order by disorder where quantum fluctuations can generate an ordered state in frustrated systems at very low temperatures. We show the appearance of a quasi-ordered phase in the square-octagon fully frustrated transverse field Ising model generated through quantum order by disorder in a quantum annealer of 996 qubits. The results are benchmarked against theoretical tools such as Landau theory and also quantum Monte Carlo simulations.