Locally suppressed transverse-field protocol for diabatic quantum annealing

Diabatic quantum annealing (DQA) is an alternative algorithm to adiabatic (AQA) that can be used circumvent the exponential slowdown caused by small minima in energy spectrum. We present locally suppressed transverse-field (LSTF) protocol, a heuristic method for making stoquastic optimization problems compatible with DQA. show that, provided problem intrinsically has magnetic frustration due inhomogeneous local fields, target qubit always manipulated create double minimum gap between ground and first excited states during evolution of algorithm. Such exploited induce diabatic transitions state back state. In addition its relevance classical algorithmic speed-ups, LSTF protocol enables DQA proof-of-principle physics experiments performed on existing hardware, independent controls exist transverse magnetization fields. discuss implications coherence requirements hardware when using considering specifically cases relaxation dephasing. rate large system made depend only presenting new opportunities characterization decohering environment processor.