A debubbling apparatus for removing gaseous bubbles entrained in a liquid is taught which has improved dearation capacity. Upon selection of at least one initial group, at least some of the images of the selected group are displayed in distinct sub-groups based upon a common characteristic of the members of each respective sub-group. According to the invention, several cover layers are mounted on the conductor carrier layer. The duration of a CNOT operation is estimated to be much shorter than the time for an electron to decohere by emitting an acoustic phonon.