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| Number | Title | Issue Date |
| 7268576 | Superconducting qubit with a plurality of capacitive couplings A first qubit having a superconducting loop interrupted by a plurality of Josephson junctions is provided. Each junction interrupts a different portion of the superconducting loop and each different adjacent pair of junctions in the plurality of Josephson junctions ... | 09/11/2007 |
| 7253654 | Superconducting qubits having a plurality of capacitive couplings A first qubit having a superconducting loop interrupted by a plurality of Josephson junctions is provided. Each junction interrupts a different portion of the superconducting loop and each different adjacent pair of junctions in the plurality of Josephson junctions ... | 08/07/2007 |
| 7215174 | Method and apparatus for implementing a radiation hardened N-channel transistor with the use of non-radiation hardened transistors A non-radiation hardened N-channel transistor used in a power switching circuit functioning in a high-ionizing, radiation-dose environment. The circuit including at least one non-radiation hardened N-channel MOSFET switching transistors, the transistor having a gate... | 05/08/2007 |
| 7129870 | Superconducting latch driver circuit generating sufficient output voltage and pulse-width A circuit includes a latch circuit including a Josephson junction and configured to perform a latch operation based on a hysteresis characteristic in response to a single flux quantum, a load circuit including load inductance and load resistance and coupled to an ou... | 10/31/2006 |
| 6967539 | Low phase-noise local oscillator and method An oscillator to generate a low phase-noise reference signal at an oscillation frequency includes a frequency generator to generate the reference signal responsive to a control signal, and a delay element made of a high-temperature superconductor material. The delay... | 11/22/2005 |
| 6507234 | Active timing arbitration in superconductor digital circuits A superconductor circuit (50) for providing active timing arbitration between SFQ pulses. The superconductor circuit (50) includes a first superconducting transmission line (52) having at least one inductor (54) for transmitting first input pulses, and a ... | 01/14/2003 |
| 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 |
| 5389837 | Superconducting flux flow digital circuits A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs). Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ... | 02/14/1995 |
| 5365476 | Three-port Josephson memory cell for superconducting digital computer A three-port Josephson memory cell has one input port (a data line) and two output ports (first and second sense lines). The memory cell receives a write enable pulse on a write line to store a bit of data from the data line as circulating supercurrent. T... | 11/15/1994 |
| 5336941 | Superconducting circuit and method for driving the same According to the present invention, there is provided a superconducting circuit including a Josephson tunnel junction 1 and a load resistor 2 connected in parallel to the Josephson tunnel junction, in which a current source 5 is connected to the input ter... | 08/09/1994 |
| 5326986 | Parallel N-junction superconducting interferometer with enhanced flux-to-voltage transfer function A physical configuration for a parallel multi-junction superconducting quantum interference device that can be used for a variety of applications involving the detection of magnetic flux, including applications where it is desired to measure the absolute ... | 07/05/1994 |
| 5315180 | Synchronizing interface circuit between semiconductor element circuit and a Josephson junction element circuit In an interface circuit transferring a data signal from a semiconductor element circuit to a Josephson junction element circuit, a first unit detects a change switching of a first clock signal supplied from the semiconductor element circuit, and generates... | 05/24/1994 |
| 5309038 | Superconducting toggle flip-flop circuit and counter circuit A high-speed counter capable of counting the number of randomly incoming pulses is constructed by serially connecting a plurality of toggle flip-flop circuits, each of which is activated by input pulses and constructed from an rf-SQUID and the quantum flu... | 05/03/1994 |
| 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 |
| 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 |
| 5253199 | JJ-MOS read access circuit for MOS memory Apparatus for selecting memory cells in a MOS memory array and reading data contained therein. Superconducting Josephson junction devices switch between a superconducting and voltage gap mode for rapid selection of an addressed memory cell row and column,... | 10/12/1993 |
| 5227792 | Superconducting analog-to-digital converter with a triple-junction reversible flip-flop bidirectional counter A high-performance superconducting analog-to-digital (A/D) converter providing high-speed, high-resolution A/D conversion with low power consumption. The superconducting A/D converter of the present invention includes a bidirectional binary counter having... | 07/13/1993 |
| 5191236 | System and circuits using Josephson junctions An electronic clock has a single Josephson junction connected in parallel to a resonant circuit, which is a delay line with a matching resistance at the input end to provide series termination. The opposite end of the delay line is an open end to reflect ... | 03/02/1993 |
| 5170080 | Superconducting push-pull flux quantum digital logic circuits Superconducting digital logic circuits constructed in accordance with this invention include a circuit branch having first and second Josephson junctions electrically connected in series with each other, with a junction point between the first and second ... | 12/08/1992 |
| 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 |
| 5019818 | Superconducting analog-to-digital converter with grounded four-junction squid bidirectional counter A high-speed, high-resolution superconducting counting A/D converter providing greatly increased conversion speeds with a low device count. The superconducting counting A/D converter includes a double-junction SQUID quantizer and a bidirectional binary co... | 05/28/1991 |
| 5012243 | Superconducting analog-to-digital converter with floating four-junction squid bidirectional counter A high-speed, high-resolution superconducting counting A/D converter providing greatly increased conversion speeds with a low device count. The superconducting counting A/D converter includes includes a double-junction SQUID quantizer and a bidirectional ... | 04/30/1991 |
| 4983971 | Josephson analog to digital converter for low-level signals This is a superconducting analog-to-digital converter for producing a digital output signal which is a function of an analog input signal. The analog-to-digital converter uses a nonhysteresis-shunted Josephson junction, an input superconducting inductor, ... | 01/08/1991 |
| 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 |
| 4866302 | Time domain reflectometer A circuit is provided for sampling and accurately reproducing unknown signals which could be electrical, optical, x-ray, gamma ray or particle signals with picosecond resolution. The circuit comprises a superconductive sampling gate having at least two st... | 09/12/1989 |
| 4823026 | Apparatus and method for measurement of a signal with a sampler An apparatus and method for measurement of a signal with a monitor gate is disclosed. A signal to be measured is applied as an input to the monitor gate and a detection signal is generated that indicates whether or not the monitor gate has switched betwee... | 04/18/1989 |
| 4789794 | Time domain reflectometer A circuit is provided for sampling and accurately reproducing unknown signals, which could be electrical, optical, X-ray, gamma ray or particle signals, with picosecond resolution. The circuit comprises a superconductive sampling gate having at least two ... | 12/06/1988 |
| 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 |
| 4631423 | Ultra high resolution Josephson sampling technique A circuit is provided for sampling and accurately reproducing unknown signals with picosecond resolution, which could be electrical, optical, x-ray, gamma ray, or particle signals. The circuit comprises a superconductive monitor gate having at least two s... | 12/23/1986 |
| 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 |
| 4603263 | Josephson pulse generator of current injection type A Josephson pulse generator of the current injection type is composed of a first group of N (Nࣙ2) resistors, one end of each being connected together, the other ends of two of the N resistors being connected to first and second nodes. A second group of ... | 07/29/1986 |
| 4506166 | Pulse generation circuit using at least one Josephson junction device A pulse generator utilizes a Josephson junction gate circuit having first and second control current paths for conducting control currents in opposite directions. An input signal applied to one of the control current paths will transform the Josephson jun... | 03/19/1985 |
| 4501975 | Josephson junction latch circuit A Josephson junction latch circuit is provided which has an AND gate having plural inputs and a single output. The output of the single AND gate is directly coupled to a Josephson junction flux storage loop capable of storing flux indicative of the output... | 02/26/1985 |
| 4489424 | Frequency divider making use of Josephson junction circuits A frequency divider is provided by coupling the gate current paths of a pair of Josephson junction gate circuits in parallel with the control current path of a third Josephson junction gate circuit being connected in series with the gate current path of o... | 12/18/1984 |
| 4373138 | Hybrid unlatching flip-flop logic element Described is a DC powered flip-flop logic or memory element (i.e., circuit) which comprises two Josephson junction gates J1 and J2 which operate individually in the latching mode. In one logic state, the gate J1 is at V | 02/08/1983 |
| 4336523 | Superconductive switching and storage device A switching and storage device is described in which a superconductor is arranged in regard to a magnetic or magnetizable element so that the magnetic field of the element surrounds the superconductor. The inner inductivity of the superconductor is subjec... | 06/22/1982 |
| 4274015 | Self-resetting Josephson digital current amplifier A self-resetting digital current amplifier which utilizes Josephson devices is disclosed. The basic circuit includes a pair of switchable Josephson devices connected to each other and with an output load. The first of these devices is switched by a combin... | 06/16/1981 |
| 4263603 | Subminiature bore and conductor formation A process for forming subminiature bores through very thin layers of insulative material disposed between spaced electrical conductors permits the lining of the conductors by a further conductor of microscopic cross section whose dimensions are readily co... | 04/21/1981 |
| 4227153 | Pulse generator utilizing superconducting apparatus High power, phase coherent pulses are generated by superconducting appara which includes a superconducting cavity resonator that is pumped by a low power microwave source while being isolated from a load. Switching of the cavity to an emitting mode is ac... | 10/07/1980 |
