An adjustable toolbox for use in conjunction with a bed on a pickup. The ladder structure and first qubit may be coupled via a superconducting flux coupler. The method comprises the steps of: receiving a display request from the terminal; generating a group of data objects concerning the contents of the display, generating a group of view objects for generating the display control information; and by referring to the information about the attributes of the terminal, generating the display control information by the group of view objects. Whereby, the first collector drift zone is shortened as compared to the second collector drift zone by partial etching of the epitaxial layer.