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8098179 |
Systems, methods and apparatus for digital-to-analog conversion of superconducting magnetic flux signals
A superconducting flux digital-to-analog converter includes a superconducting inductor ladder circuit. The ladder circuit includes a plurality of closed superconducting current paths that each...
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8076703 |
Semiconductor device and methods for fabricating same
A semiconductor device is provided which includes a substrate including an inactive region and an active region, a gate electrode structure having portions overlying the active region, a...
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7923717 |
Switching device using superlattice without any dielectric barriers
A switching device has an S (Superconductor)-N (Normal Metal)-S superlattice to control the stream of electrons without any dielectric materials. Each layer of said Superconductor has own terminal....
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7858966 |
Protected qubit based on superconducting current mirror
A qubit implementation based on exciton condensation in capacitively coupled Josephson junction chains is disclosed. The qubit may be protected in the sense that unwanted terms in its effective...
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7741634 |
Josephson junction device for superconductive electronics with a magnesium diboride
A Josephson junction (JJ) device includes a buffered substrate comprising a first buffer layer formed on a substrate. A second buffer layer is formed on the first buffer layer. The second buffer...
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7323711 |
High-temperature superconductive device
A high-temperature superconductive device is disclosed, including a ramp-edge junction. The ramp-edge junction includes a first electrode layer (5) that defines the size of the ramp-edge junction...
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7307275 |
Encoding and error suppression for superconducting quantum computers
The present invention involves a quantum computing structure, comprising: one or more logical qubits, which is encoded into a plurality of superconducting qubits; and each of the logical qubits...
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7250648 |
Ferroelectric rare-earth manganese-titanium oxides
Ferroelectric rare-earth manganese-titanium oxides and methods of their manufacture. The ferroelectric materials can provide nonvolatile data storage in rapid access memory devices.
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6984846 |
Gradiometer-based flux qubit for quantum computing and method therefor
A qubit (quantum bit) circuit includes a superconducting main loop that is electrically-completed by a serially-interconnected superconducting subloop. The subloop includes two Josephson junctions....
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6979836 |
Superconducting low inductance qubit
A superconducting structure that can operate, for example, as a qubit or a superconducting switch is presented. The structure includes a loop formed from two parts. A first part includes two...
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6822255 |
Finger SQUID qubit device
A finger SQUID qubit device and method for performing quantum computation with said device is disclosed. A finger SQUID qubit device includes a superconducting loop and one or more superconducting...
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6803599 |
Quantum processing system for a superconducting phase qubit
A control system for an array of qubits is disclosed. The control system according to the present invention provides currents and voltages to qubits in the array of qubits in order to perform...
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6790675 |
Josephson device and fabrication process thereof
A method of fabricating a Josephson device includes the steps of forming a first superconducting layer and forming a second superconducting layer to form a Josephson junction therebetween, wherein...
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6784451 |
Multi-junction phase qubit
In one embodiment, a two-junction phase qubit includes a superconducting loop and two Josephson junctions separated by a mesoscopic island on one side and a bulk loop on another side. The material...
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6777808 |
Capacitor for signal propagation across ground plane boundaries in superconductor integrated circuits
The self inductance associated with a capacitance A52 in a superconductor integrated circuit (FIG. 1) is reduced by adding a layer of superconductor metal (A54) overlying the capacitor, effectively...
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6728131 |
Fluxon injection into annular Josephson junctions
A method for inserting fluxons into an annular Josephson junction is disclosed. Fluxon injection according to the present invention is based on local current injection into one of the...
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6649929 |
Quantum computing with d-wave superconductors
A method and structure for a d-wave qubit structure includes a qubit disk formed at a multi-crystal junction (or qubit ring) and a superconducting screening structure surrounding the qubit. The...
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6580102 |
Four-terminal system for reading the state of a phase qubit
Quantum computing systems and methods that use opposite magnetic moment states read the state of a qubit by applying current through the qubit and measuring a Hall effect voltage across the width...
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6365912 |
Superconducting tunnel junction device
A superconductive tunnel junction device in which quasiparticles in a superconductive region (S1), relax into a normal metal trap (N1) releasing their potential energy in electron-electron...
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6344659 |
Superconducting transistor arrangement and a method relating thereto
The present invention relates on an interferometer arrangement comprising a source electrode and a drain electrode, a base electrode to which the source electrode and the drain electrode are...
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6160266 |
Superconducting device and a method of manufacturing the same
This invention provides a superconducting device with good characteristics that can be reproduced at an arbitrary place on a substrate and a method of manufacturing the same. A convex region (a...
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6111268 |
Electronic device
The invention relates to an inverted JOFET with an at least bicrystalline electrically conductive substrate-layer bearing an insulating element and a superconductive element with a...
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5965900 |
Tunnel-effect superconductive detector cell
The invention relates to a detector cell comprising tunnel-effect superconductive devices organized in a two-dimensional array and placed on a common substrate, each superconductive device...
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5955743 |
Superconductive tunnel elements, tunnel stacks produced therefrom and use thereof
The invention relates to a superconductive tunnel element comprising superconductors, barriers and insulators, which tunnel element has the following layer structure: superconductor (S1), insulator...
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5942765 |
High-temperature superconducting random access memory
In the random access memory utilizing an oxide high-temperature superconductor, a first high-temperature superconductor layer 1, a non-superconductor layer 2, a second high-temperature...
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5872731 |
Multi-state Josephson memory
A multi-state Josephson memory in a superconductor integrated circuit includes a plurality of superconductive quantum interference device (SQUID) memory cells 2 each having a SQUID 4 characterized...
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5861361 |
Superconducting field effect device having a superconducting channel and method for manufacturing the same
A FET type superconducting device comprises a thin superconducting channel, a superconducting source region and a superconducting drain region formed of an oxide superconductor over a principal...
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5854492 |
Superconducting quantum interference device fluxmeter and nondestructive inspection apparatus
A nondestructive inspection apparatus having a SQUID is made with compact configuration and is capable of detecting a metallic or non-metallic metal for defects, corrosion, and the like, by forming...
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5831278 |
Three-terminal devices with wide Josephson junctions and asymmetric control lines
A three-terminal device constructed from a Josephson junction with one or more asymmetric control lines is disclosed. The device is constructed with high temperature superconducting materials. The...
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5821557 |
Josephson junctions and process for making same
A Josephson junction includes a substrate, a first superconducting layer, a second superconducting layer transversely overlaid on the first layer with an insulating layer interposed therebetween,...
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5804835 |
Method of operating a high temperature superconductive device comprising superconductive source, drain, and channel regions
This is an invention of a superconductive device that is equipped with a first superconductive electrode, a second superconductive electrode and a junction that is made of a superconductive...
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5773843 |
Metal electrode for superconducting current path formed of oxide superconductor material and superconducting device utilizing thereof
A metal electrode disposed on a surface of an oxide superconductor and forming electric contact with the oxide superconductor wherein at least a portion of the metal electrode is in contact with a...
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5757243 |
High frequency system including a superconductive device and temperature controlling apparatus
An effective high frequency oscillator is made of a plurality of Josephson devices. A high frequency converter as a high frequency circuit is made of the high frequency oscillator, nonlinear...
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5717222 |
Superconducting device having an extremely thin superconducting channel formed of oxide superconductor material and method for manufacturing the same
A superconducting device includes a substrate, a projecting insulating region formed in a principal surface of the substrate, and a first thin film portion of an oxide superconductor formed on the...
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5710437 |
Radiation detecting device using superconducting tunnel junction and method of fabricating the same
A radiation detecting device including a superconducting tunnel junction having a three-layer structure formed by depositing a lower electrode, a tunnel barrier layer, and an upper electrode in...
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5654259 |
Superconductive conjugate photoconductive substances of the Bi-SrCa (laY)-Cu-O system, a method for producing the same and superconductive optoelectronic devices using the same
The substance has a composition of a general chemical formula of Bi2 -(Sr2 Ca1)1-x (La2 Y1)x -Cuy -Oz,where 0.4≤x≤1, y=2 and z=9-10.5, wherein the substance is an insulator or a semiconductor in ...
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5621223 |
Superconducting device having a reduced thickness of oxide superconducting layer and method for manufacturing the same
A superconducting device includes first and second oxide superconducting regions of a relatively thick thickness, formed directly on a principal surface of a substrate to be separate from each...
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5610857 |
Memory element with multibit storage
A memory element for multiple bit storage uses a plurality of Josephson junction devices coupled in parallel between a ground plane and a superconductive line. A gate current is directly coupled to...
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5548130 |
DC superconducting quantum interference device with shield layer
A DC SQUID has a first washer coil for forming a superconducting ring, Josephson junctions and a dampening resistor coupled to both ends of the first washer coil, and a shunting resistor connected...
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5521399 |
Advanced silicon on oxide semiconductor device structure for BiCMOS integrated circuit
A bonded, SOI wafer which has stepped isolation trenches and sublayer interconnections first formed in a bulk silicon wafer. After these process steps are complete, a thin polysilicon layer is...
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5481119 |
Superconducting weak-link bridge
A superconducting element includes a superconducting thin film bridge extending along the surface of a substrate, and a control electrode member for injecting quasi particles into a portion of an...
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5441926 |
Superconducting device structure with Pr-Ba-Cu-O barrier layer
A superconducting transistor having a source region and a drain region are formed by a YBCO film on a barrier layer, which is composed of a PBCO film formed on an STO substrate. A gate electrode is...
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5442195 |
Superconducting device including plural superconducting electrodes formed on a normal conductor
A superconducting device may include a superconducting weak link equipped with plural superconducting devices that are used as input-output terminals formed on the same plane and at least one...
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5436471 |
Josephson junction apparatus formed on flexible polymeric film
A Josephson junction apparatus comprises a polymeric film having flexibility, and a Josephson junction circuit formed on the polymeric film. The Josephson junction circuit includes a Josephson...
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5424281 |
Oxide-superconduction grain boundary tunneling device
An oxide-superconducting device comprises first and second electrodes of oxide-superconductor which are connected through a tunnel barrier layer. The oxide-superconductor is formed on a substrate...
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5422497 |
Superconducting device having layered structure composed of oxide thin film and insulator thin film
A superconducting device includes a first thin film of oxide superconductor material formed on a substrate, a second thin film of insulator material stacked on the first thin film of oxide...
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5422336 |
Superconducting FET with Pr-Ba-Cu-O channel
A superconducting transistor with superior withstand voltage having source region and a drain region formed of oxide superconductors 3, a PrBa2 Cu3 O7-x layer 2 or an ScBa2 Cu3 O7-x layer 2 forming...
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5382565 |
Superconducting field-effect transistors with inverted MISFET structure
This field-effect transistor comprises a conductive substrate (2) serving as the gate electrode, an insulating barrier layer (3), and a superconducting channel layer (1) on top of the barrier layer...
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5380704 |
Superconducting field effect transistor with increased channel length
Disclosed herein is a superconducting field effect transistor (FET) which has at least an active region formed from a film of oxide normal conductor, a plurality of electrodes formed from a film of...
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5358928 |
High temperature superconductor step-edge Josephson junctions using Ti-Ca-Ba-Cu-O
A process for formulating non-hysteretic and hysteretic Josephson junctions using HTS materials which results in junctions having the ability to operate at high temperatures while maintaining high...
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