PMC

A visual example of our coincidence processor, shown with 4 total energy-qualified singles in the time window (in 2-D, 3-D views and time domains). (a) 3 potential coincidences (coincidence pairs 1–2, 1–3 and 1–4) in the primary, fixed time window (τ_fixed). (b) Coincidence pair 1–2 is rejected by the geometric window. (c) Coincidence pair 1–3 is rejected by the variable time window (τ₁₃), while coincidence pair 1–4 is accepted by the variable time window (τ₁₄). Note: The asterisk (*) denotes the reference single. Also, coincidence pairs 2–3 and 2–4 are not considered in the time window opened by 1 (τ_fixed) but will be considered in the time window opened by 2.

The regulator is expressed in terms of a new parameter f: λ = 2f|T|/N. For each pair (α, f), the problem was optimized with 1000 calls to the D-wave processor and the classifier of minimal validation error recorded. The overall minimal error of 9%, in deepest blue, is attained for .

( a) Each horizontal line represents an input of elements attached to a processor. Each processor first locally sorts its list of 4 elements, then, the parallel sort performs three steps of compare-split operations over the bitonic sorting network. ( b) During the compare-split operation, each pair of processors first exchanges their information: each processor sends its block to the other process, then it merges the two sorted blocks into one list and stores only the appropriate half of the merged block to be used in the next step (adapted from & ).

Photograph of the autoPiLOT reaction processor. Microfluidic polymer tubing (A) contains the reaction solutions. Two gears (B) controlled by a stepper motor move the tubing. A fluorometer (C) measures the fluorescence on the beads inside a light-tight chamber. Two neodynium magnets (D) hold the magnetic beads in their field. An IR sensor/receiver pair (E) detects the liquid/air interfaces in the tubing.