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| Number | Title | Issue Date |
| 7876145 | Control system architecture for qubits A control system architecture for quantum computing includes an array of qubits, which is divided into a plurality of sub-arrays based on a first direction and a second direction, the second direction intersecting the first direction, a plurality of control lines ea... | 01/25/2011 |
| 7443720 | Method and circuit for reading quantum state A single electron-transistor is used to read out charge states of two coupled qubits formed by two Cooper pair boxes. Detection is made about a gate voltage shift of the peak of the current that flows in the single electron transistor in accordance with the charge s... | 10/28/2008 |
| 7247603 | Charge dissipative dielectric for cryogenic devices A Superconducting Quantum Interference Device (SQUID) is disclosed comprising a pair of resistively shunted Josephson junctions connected in parallel within a superconducting loop and biased by an external direct current (dc) source. The SQUID comprises a semiconduc... | 07/24/2007 |
| 7106124 | Field emission RF amplifier A field emission RF amplifier. The field emission RF amplifier includes one or more RF amplification units on a substrate and held in a vacuum state and facing a reflection electrode. The RF amplification unit includes a cathode electrode, gate electrode, and an ano... | 09/12/2006 |
| 7098703 | Resonant logic driver circuit An electronic logic driver circuit, for driving a capacitive load between supply potentials for example for use in driving logic circuit elements on or off a chip, is disclosed. The driver circuit comprises switching devices to switch current either to or from two m... | 08/29/2006 |
| 7068097 | High frequency high power H-bridge power amplifier Methods and apparatus are provided for driving a power amplifier load, such as a loudspeaker. The apparatus comprises a processor-controlled drive assembly configured as an H-bridge system. Groupings of half-bridge assemblies are connected to the load in an H-bridge... | 06/27/2006 |
| 6960929 | Superconductive crossbar switch A superconductor crossbar switch for connecting a plurality of inputs with a plurality of outputs, including a switching cell having an input, an output and a circuit for connecting the input with the output for bidirectionally transmitting data therebetween. The co... | 11/01/2005 |
| 6424135 | High power drive from AC and DC sources using cryoelectronics A method and apparatus for powering a high power load (on the order of 50,000 watts or more) can have an input from any of a plurality of different voltage sources, AC or DC. In one embodiment, the AC sources can have a frequency in the range of 162/3-60 ... | 07/23/2002 |
| 6353330 | Single-flux-quantum digital device A single-flux-quantum digital device includes a first superconducting line extended in a large ring, a second superconducting line connected to the first superconducting line, a superconducting single electron transistor for regulating a supercurrent flow... | 03/05/2002 |
| 6172550 | Cryogenically-cooled switching circuit An electronic power conversion circuit includes cryogenically cooled MOSFET power switching devices arranged in a switch-mode configuration and responsive to control signals for reducing capacitive discharge and commutation losses in the circuit by contro... | 01/09/2001 |
| 5959483 | Method for amplifying voltage in Josephon junction The present invention discloses a method for amplifying voltage to which a test will be given in Josephon junction having external current, and more particularly, to a method for amplifying voltage in Josephon junction in which the voltage in a simple Jos... | 09/28/1999 |
| 5619159 | Signal processing device and a method for transmitting signal A signal processing device comprises superconducting wiring for providing an output signal or a transmitted signal correctly corresponding to an input signal without increasing the temperature of the device. The signal processing device has a signal input... | 04/08/1997 |
| 5612615 | Cryogenic electronics power supply A cryogenically cooled circuit, operating at temperatures at which inductors windings of the circuit exhibit superconducting characteristics, provides unique advantages in high performance, preferably high power circuits. Portions of the circuit (or the e... | 03/18/1997 |
| 5532638 | Superconducting energy storage apparatus In a superconducting energy storage apparatus including an AC-DC converter unit, a superconducting coil, a quench protection unit and a mechanical type persistent current switch, a self-firing type thyristor switch is connected in parallel to the mechanic... | 07/02/1996 |
| 5434530 | Superconducting semiconducting cross-bar circuit A hybrid superconducting-semiconducting field effect transistor-like circuit element comprised of a superconducting field effect transistor and a closely associated cryogenic semiconductor inverter for providing signal gain is described. The hybrid circui... | 07/18/1995 |
| 5350739 | Reflective HTS switch A HTS switch includes a HTS conductor for providing a superconducting path for an electrical signal and an serpentine wire actuator for controllably heating a portion of the conductor sufficiently to cause that portion to have normal, and not superconduct... | 09/27/1994 |
| 5347168 | Cryogenic electronics power supply and power sink A cryogenically cooled circuit, operating at temperatures at which inductors windings of the circuit exhibit superconducting characteristics, provides unique advantages in high performance, preferably high power circuits. The entire circuit, as opposed to... | 09/13/1994 |
| 5345115 | Superconducting input interface circuit for superconducting circuit A superconducting interface circuit converting a signal sent from a normal conducting circuit into a small voltage swing signal suitable for a superconducting circuit includes a superconducting field effect device. The superconducting field effect device ... | 09/06/1994 |
| 5345114 | Superconductor logic and switching circuits Current controlled superconductor switches formed by reactive patterning or other fabrication techniques may be used to form logic circuits including OR, AND, NOR, NAND, and NOT gates, a circuit breaker or an analog-to-digital converter. Each switch conta... | 09/06/1994 |
| 5315163 | Analogic neuronal network The network comprises cells each constituted by a first channel (4, 4') of a material having selectively a superconductive state and a resistive state, refrigeration apparatus to maintain the first channel at a temperature below that which ensures superco... | 05/24/1994 |
| 5298485 | Superconductive logic device A logic circuit device includes a superconductive body formed of a ceramic superconductive material. The ceramic superconductive material has random grain boundaries which act as weak couplings. The ceramic superconductive material also has a magneto-resi... | 03/29/1994 |
| 5296749 | Superconductor microelectronic devices and circuits and a method of fabricating therefor Magnetic flux concentrating materials are introduced in superconducting moelectronic devices and circuits as a method and means for fabrication of more compact, higher speed superconducting microelectronic devices and circuits.... | 03/22/1994 |
| 5287057 | Superconducting circuit having a rectifier for converting a bipolar signal to a unipolar signal A superconducting circuit system comprises a biasing circuit for producing a bias current that changes periodically, and a superconducting rectifier circuit driven by the bias current. The superconducting rectifier circuit is supplied with a first pulse t... | 02/15/1994 |
| 5286710 | Superconductive alloys having bifurcated critical current density and method of preparation A device having superconductive and resistive states including an element comprising a high temperature superconductive material having a first (high) state with a first (high) critical current density and having a second (low) state with a second (low) c... | 02/15/1994 |
| 5266844 | Timing discriminator circuit and method for determining the arrival order of input signals The present invention is directed to systems and methods capable of analyzing a wide variety of input signal waveforms to arbitrate their arrival sequence with a high resolution. In an exemplary embodiment, the apparatus is an arbiter circuit which includ... | 11/30/1993 |
| 5264735 | Superconducting non-linear device A superconducting non-linear device comprising a superconducting conductor, a current source associated with the conductor for applying to the conductor a bias current, and a control device associated with the current source for selectably varying the bia... | 11/23/1993 |
| 5258763 | Superconducting non-linear device A superconducting non-linear device comprising a superconducting conductor, a current source associated with the conductor for applying to the conductor a bias current, and a control device associated with the current source for selectably controlling the... | 11/02/1993 |
| 5229655 | Dual control active superconductive devices A superconducting active device has dual control inputs and is constructed such that the output of the device is effectively a linear mix of the two input signals. The device is formed of a film of superconducting material on a substrate and has two main ... | 07/20/1993 |
| 5227669 | Superconducting non-linear device A superconducting non-linear device comprising a superconducting conductor, a current source associated with the conductor for applying to the conductor a bias current, and a control device associated with the current source for selectably controlling the... | 07/13/1993 |
| 5153803 | Contact maker-breaker A contact maker-breaker is disclosed in which the power contacts are associated in series with a superconducting element which is controlled by a heating element and which is structured so as to have a very high resistance following its controlled transit... | 10/06/1992 |
| 5148046 | Superconductive switching device and method of use A superconductive switching device includes an elongated gate which is circumferentially spirally overwound by a trigger. Both the gate and the trigger are superconductive, but the resistance of the trigger is much smaller than the normal resistance of th... | 09/15/1992 |
| 5105098 | Superconducting power switch A primary current path (10) is defined by a thin film that spirals in a helix (14) around a central axis (16). A control path (12) extends peripherally around the helix to define a peripheral control coil (18). In this manner, the primary path and the con... | 04/14/1992 |
| 5087610 | Switchable superconducting elements and pixels arrays An array of superconducting elements in which each element can be quenched into the nonsuperconductive or normal state independently at will. The array can be used to form spatially and temporally variable images or for forming spatially and temporally va... | 02/11/1992 |
| 5070070 | High temperature superconducting memory storage device and cryotron Binary memory storage devices and cryotrons utilizing superconducting crystals exhibiting an onset of superconductivity and a relatively weak flux exclusion at a temperature T1 and the onset of relatively strong flux exclusion at T2, where T1>T2>77K, are ... | 12/03/1991 |
| 4963852 | Superconductor switch A current controlled superconducting switch has a current controlling constriction such that the level of the input determines the condition of the switch. A plurality of the superconducting switches are connected to produce a logic scheme.... | 10/16/1990 |
| 4926067 | Integrated superconducting sampling oscilloscope An Integrated Superconductor Sampling Oscilloscope may include a sampling gate utilizing superconductor devices such as a Josephson junction device as well as external circuitry for producing a visual representation of an input signal responsive to the ou... | 05/15/1990 |
| 4646060 | Superconducting analog-to-digital converter with bidirectional counter An analog-to-digital converter quantizer and bidirectional counter using superconducting quantum interference devices (SQUID's) as the principal elements. A double-junction non-latching SQUID is used as a quantizer to produce unipolar output pulses on two... | 02/24/1987 |
| 4609831 | Apparatus for transmitting energy to and from coils An apparatus for transmitting energy to and from superconductive coils, via a unipolar capacitor having a large capacitance. The apparatus is characterized by the use of two on-off self-controllable switches which are turned on and off under instructions ... | 09/02/1986 |
| 4472727 | Carrier freezeout field-effect device A buried-channel MOSFET device 10 is cooled sufficiently to experience majority carrier freezeout in the channel region 30 (e.g. 10° k.). It is appropriately fabricated and biased to form a buried-channel 40. When the gate 26 is pulsed, there appears in ... | 09/18/1984 |
| 4348710 | Method and structure for compensating for variations in vapor cooled lead resistance of superconducting magnets A superconducting magnet arrangement having a sealed cryogenic environment utilizing liquid helium, a superconducting coil immersed in the liquid helium, a constant current power supply exterior of the cryogenic environment and connected to the coil by le... | 09/07/1982 |
