Abstract:
A T-joint connector can be useful for connecting one or more flex circuit boards to quantum hardware including one or more qubits. The T-joint connector can include one or more flex circuit boards. Each of the one or more flex circuit boards can include one or more signal lines and one or more spring interconnects including a superconducting material. The one or more spring interconnects can be coupled to the one or more signal lines. The one or more spring interconnects can be configured to couple the one or more signal lines to one or more signal pads disposed on a mounting circuit board associated with the quantum hardware. The superconducting material can be superconducting at a temperature less than about 3 kelvin.
Abstract:
A circuit assembly (10) for cooling a quantum electrical device (12), use of said circuit assembly (10), a system and a method for cooling a quantum electric device (12) are provided. The circuit assembly (10) comprises a quantum electric device (12) to be cooled, at least one normal-metal-insulator- superconductor (NIS) tunnel junction (13) electrically connected to the quantum electric device (12) and at least one superconductive lead (14) for supplying a drive voltage VQCR for said at least one NIS tunnel junction (13). The quantum electric device (12) is cooled when the voltage V QCR is supplied to at least one NIS tunnel junction (13), said voltage VQCR being equal to or below the voltage NΔ /e, where Λ/=1 or Λ/=2, N is the number of NIS tunnel junctions electrically coupled in series with the means for generating the voltage, Δ is the energy gap in the superconductor density of states and e is the elementary charge.
Abstract:
In embodiments of the invention, a superconductor lead is configured to have less ohmic heating by its own current and less heat conduction from room temperature to cryogenic temperature, where a cryogenic apparatus is located. The superconducting lead with no ohmic resistance and low thermal conductivity disclosed herein maximizes current capacity by placing superconductors in parallel, each having equal current. Thus, the resistances are controlled to provide uniform current distribution through each superconductor of the high temperature superconducting (HTS) lead.
Abstract:
Die vorliegende Erfindung betrifft einen Verbinder (100) für supraleitfähige Leiter sowie eine Verwendung des Verbinders (100). Der Verbinder (100), welcher sich zum elektrischen Verbinden zumindest eines ersten supraleitfähigen Leiters (10) mit zumindest einem zweiten supraleitfähigen Leiter (20) eignet, umfasst: - ein elektrisch leitfähiges Basiselement (30) mit einem ersten Endabschnitt (32), an dem der zumindest erste supraleitfähige Leiter (10) elektrisch kontaktierbar ist und einem zweiten Endabschnitt (34), an dem der zumindest zweite supraleitfähige Leiter (20) elektrisch kontaktierbar ist; und - zumindest ein supraleitfähiges Zusatzelement (40), das zumindest bereichsweise in dem Basiselement (30) angeordnet ist und sich von dem ersten Endabschnitt (32) zu dem zweiten Endabschnitt (34) des Basiselements (30) erstreckt.
Abstract:
A method is provided of forming an electrically conductive joint between a first superconductor and a member. A first superconductor is provided having a first bonding surface. A member to be joined with the first superconductor, is provided having a second bonding surface. A reactive foil is located adjacent each of the first and second bonding surfaces. A joining material is positioned between the reactive foil and one or each of the first and second bonding surfaces. The joint is formed by initiating a reaction in the reactive foil so as to join the first and second bonding surfaces together. The method extends to joints between a first superconductor and a member using such a reactive foil.