公开(公告)号：US12009869B2

公开(公告)日：2024-06-11

申请号：US18130083

申请日：2023-04-03

申请人： SeeQC, Inc. ,  Center for Technology Licensing at Cornell University

发明人： Igor V. Vernik ,  Oleg A. Mukhanov ,  Alan M. Kadin ,  Christopher T. Phare ,  Michal Lipson ,  Keren Bergman

IPC分类号： H04B10/80 ,  H04B10/50 ,  H04B10/54 ,  H04B10/556

CPC分类号： H04B10/80 ,  H04B10/505 ,  H04B10/541 ,  H04B10/5563

摘要： A cryogenic optoelectronic data link, comprising a sending module operating at a cryogenic temperature less than 100 K. An ultrasensitive electro-optic modulator, sensitive to input voltages of less than 10 mV, may include at least one optically active layer of graphene, which may be part of a microscale resonator, which in turn may be integrated with an optical waveguide or an optical fiber. The optoelectronic data link enables optical output of weak electrical signals from superconducting or other cryogenic electronic devices in either digital or analog form. The modulator may be integrated on the same chip as the cryogenic electrical devices. A plurality of cryogenic electrical devices may generate a plurality of electrical signals, each coupled to its own modulator. The plurality of modulators may be resonant at different frequencies, and coupled to a common optical output line to transmit a combined wavelength-division-multiplexed (WDM) optical signal.

公开(公告)号：US20240057484A1

公开(公告)日：2024-02-15

申请号：US18492511

申请日：2023-10-23

申请人： SeeQC Inc.

发明人： Ivan Nevirkovets ,  Oleg Mukhanov

IPC分类号： H10N60/84 ,  G11C11/44 ,  H10N60/12 ,  H10N60/80 ,  H10N69/00

CPC分类号： H10N60/84 ,  G11C11/44 ,  H10N60/12 ,  H10N60/805 ,  H10N69/00

摘要： A memory cell having a Josephson junction and a magnetic junction in close proximity. The two junctions may be vertically integrated. The magnetic junction has at least two magnetic layers with different coercive forces and a non-magnetic layer therebetween, to form a spin valve or pseudo-spin valve. A magnetization direction of a magnetic layer with lower coercive force can be rotated with respect to the larger coercive force magnetic layer(s). Magnetic fields produced by appropriately configured control lines carrying electric current, or spin-polarized current through the magnetic junction, can result in rotation. The magnetic junction influences the Josephson critical current of the Josephson junction, leading to distinct values of critical current which can serve as digital logic states. The memory cell can be integrated into large arrays containing a plurality of the cells, to enable the selective READ and WRITE operations.

公开(公告)号：US11264089B1

公开(公告)日：2022-03-01

申请号：US17001461

申请日：2020-08-24

申请人： SeeQC Inc.

发明人： Oleg A. Mukhanov ,  Alan M. Kadin ,  Ivan P. Nevirkovets ,  Igor V. Vernik

IPC分类号： G11C11/44 ,  G11C11/16 ,  H01L39/22 ,  H01L39/24 ,  H01L39/02

摘要： A superconducting memory cell includes a magnetic Josephson junction (MJJ) with a ferromagnetic material, having at least two switchable states of magnetization. The binary state of the MJJ manifests itself as a pulse appearing, or not appearing, on the output. A superconducting memory includes an array of memory cells. Each memory cell includes a comparator with at least one MJJ. Selected X and Y-directional write lines in their combination are capable of switching the magnetization of the MJJ. A superconducting device includes a first and a second junction in a stacked configuration. The first junction has an insulating layer barrier, and the second junction has an insulating layer sandwiched in-between two ferromagnetic layers as barrier. An electrical signal inputted across the first junction is amplified across the second junction.

公开(公告)号：US11955934B2

公开(公告)日：2024-04-09

申请号：US17246535

申请日：2021-04-30

申请人： SeeQC, Inc.

发明人： Alessandro Miano ,  Oleg A. Mukhanov

IPC分类号： H03F19/00 ,  G06N10/00 ,  H03F7/02 ,  H10N60/12 ,  H10N60/80

CPC分类号： H03F19/00 ,  G06N10/00 ,  H03F7/02 ,  H10N60/12 ,  H10N60/805

摘要： A system and method are disclosed for a superconducting traveling-wave parametric amplifier (TWPA) with improved control and performance. In a preferred embodiment, the amplifier comprises an integrated array of symmetric rf-SQUIDs in a transmission line structure. A device was fabricated using niobium superconducting integrated circuits, and confirmed predicted performance, with a maximum gain up to 17 dB and a bandwidth of 4 GHz. A similar device can be applied as a low-noise, low-dissipation microwave amplifier for output from a superconducting quantum computer, or as a preamplifier, switch, or frequency converter for a sensitive microwave receiver, or as an output amplifier for a frequency-multiplexed superconducting detector array.

公开(公告)号：US20230380302A1

公开(公告)日：2023-11-23

申请号：US18357814

申请日：2023-07-24

申请人： SeeQC, Inc.

发明人： Daniel Yohannes ,  Denis Amparo ,  Oleksandr Chernyashevskyy ,  Oleg Mukhanov ,  Mario Renzullo ,  Andrei Talalaeskii ,  Igor Vernik ,  John Vivalda ,  Jason Walter

IPC分类号： H10N60/81 ,  H01L23/00 ,  H10N60/12 ,  H10N60/01

CPC分类号： H10N60/815 ,  H01L24/13 ,  H01L24/81 ,  H01L24/05 ,  H10N60/12 ,  H10N60/0912 ,  H01L2924/0495 ,  H01L2224/0401 ,  H01L2224/05179 ,  H01L2224/13083 ,  H01L2224/13109 ,  H01L2224/13147 ,  H01L2224/13166 ,  H01L2224/13179 ,  H01L2224/8109 ,  H01L2224/8112 ,  H01L2224/81203 ,  H01L2924/04941

摘要： A method for bonding two superconducting integrated circuits (“chips”), such that the bonds electrically interconnect the chips. A plurality of indium-coated metallic posts may be deposited on each chip. The indium bumps are aligned and compressed with moderate pressure at a temperature at which the indium is deformable but not molten, forming fully superconducting connections between the two chips when the indium is cooled down to the superconducting state. An anti-diffusion layer may be applied below the indium bumps to block reaction with underlying layers. The method is scalable to a large number of small contacts on the wafer scale, and may be used to manufacture a multi-chip module comprising a plurality of chips on a common carrier. Superconducting classical and quantum computers and superconducting sensor arrays may be packaged.

公开(公告)号：US11717475B1

公开(公告)日：2023-08-08

申请号：US17818349

申请日：2022-08-08

申请人： SeeQC, Inc.

发明人： Oleg A. Mukhanov ,  Alexander F. Kirichenko ,  Igor V. Vernik ,  Ivan P. Nevirkovets ,  Alan M. Kadin

IPC分类号： A61K8/73 ,  A61K8/42 ,  A61K8/02 ,  A61Q19/00 ,  A61K8/34 ,  A61K8/20 ,  A61Q19/08 ,  A61K8/25 ,  G06N10/00 ,  G01R33/035 ,  G01R33/12 ,  G11C11/16 ,  G11C11/18 ,  G11C11/44 ,  G11C7/10 ,  H01L27/18 ,  H01L39/22

CPC分类号： A61K8/733 ,  A61K8/0212 ,  A61K8/20 ,  A61K8/25 ,  A61K8/345 ,  A61K8/42 ,  A61Q19/00 ,  A61Q19/08 ,  G01R33/0354 ,  G01R33/1284 ,  G06N10/00 ,  G11C11/161 ,  G11C11/1653 ,  G11C11/1673 ,  G11C11/1675 ,  G11C11/18 ,  G11C11/44 ,  G11C7/1006 ,  G11C7/1075 ,  G11C2207/007 ,  H01L27/18 ,  H01L39/223

摘要： A system and method for high-speed, low-power cryogenic computing are presented, comprising ultrafast energy-efficient RSFQ superconducting computing circuits, and hybrid magnetic/superconducting memory arrays and interface circuits, operating together in the same cryogenic environment. An arithmetic logic unit and register file with an ultrafast asynchronous wave-pipelined datapath is also provided. The superconducting circuits may comprise inductive elements fabricated using both a high-inductance layer and a low-inductance layer. The memory cells may comprise superconducting tunnel junctions that incorporate magnetic layers. Alternatively, the memory cells may comprise superconducting spin transfer magnetic devices (such as orthogonal spin transfer and spin-Hall effect devices). Together, these technologies may enable the production of an advanced superconducting computer that operates at clock speeds up to 100 GHz.

公开(公告)号：US20220399145A1

公开(公告)日：2022-12-15

申请号：US17838207

申请日：2022-06-11

申请人： SeeQC Inc.

发明人： Alex F. Kirichenko ,  Amir Jafari-Salim ,  Patrick Truitt ,  Naveen Kumar Katam ,  Caleb Jordan ,  Oleg A. Mukhanov

IPC分类号： H01F6/00

摘要： Quantum computing systems require methods to control energies of qubits and couplers for quantum operations. Flux biasing of qubits and quantum couplers is provided for a superconducting quantum computer using single-flux-quantum (SFQ) technology. This method is applicable to a wide range of superconducting qubit structures and couplers, including transmons, fluxoniums, flux qubits, phase qubits and other superconducting qubits. This method enables arbitrary-amplitude time-varying flux biasing of qubits and couplers, due to a sequence of high-speed SFQ pulses. Several preferred embodiments are disclosed which provide high-fidelity control of fast single-qubit and multi-qubit operations.

公开(公告)号：US11115131B1

公开(公告)日：2021-09-07

申请号：US16867462

申请日：2020-05-05

申请人： SeeQC, Inc. ,  Center for Technology Licensing at Cornell University ,  The Trustees of Columbia University in The City of New York

发明人： Igor V. Vernik ,  Oleg A. Mukhanov ,  Alan M. Kadin ,  Christopher T. Phare ,  Michal Lipson ,  Keren Bergman

IPC分类号： H04B10/50 ,  H04B10/54 ,  H04B10/80 ,  H04B10/556

摘要： A cryogenic optoelectronic data link, comprising a sending module operating at a cryogenic temperature less than 100 K. An ultrasensitive electro-optic modulator, sensitive to input voltages of less than 10 mV, may include at least one optically active layer of graphene, which may be part of a microscale resonator, which in turn may be integrated with an optical waveguide or an optical fiber. The optoelectronic data link enables optical output of weak electrical signals from superconducting or other cryogenic electronic devices in either digital or analog form. The modulator may be integrated on the same chip as the cryogenic electrical devices. A plurality of cryogenic electrical devices may generate a plurality of electrical signals, each coupled to its own modulator. The plurality of modulators may be resonant at different frequencies, and coupled to a common optical output line to transmit a combined wavelength-division-multiplexed (WDM) optical signal.

公开(公告)号：US20210265964A1

公开(公告)日：2021-08-26

申请号：US17246535

申请日：2021-04-30

申请人： SeeQC, Inc.

发明人： Alessandro Miano ,  Oleg A. Mukhanov

IPC分类号： H03F19/00 ,  G06N10/00 ,  H01L39/22 ,  H01L39/02 ,  H03F7/02

摘要： A system and method are disclosed for a superconducting traveling-wave parametric amplifier (TWPA) with improved control and performance. In a preferred embodiment, the amplifier comprises an integrated array of symmetric rf-SQUIDs in a transmission line structure. A device was fabricated using niobium superconducting integrated circuits, and confirmed predicted performance, with a maximum gain up to 17 dB and a bandwidth of 4 GHz. A similar device can be applied as a low-noise, low-dissipation microwave amplifier for output from a superconducting quantum computer, or as a preamplifier, switch, or frequency converter for a sensitive microwave receiver, or as an output amplifier for a frequency-multiplexed superconducting detector array.

公开(公告)号：US10755775B1

公开(公告)日：2020-08-25

申请号：US15488168

申请日：2017-04-14

申请人： Hypres, Inc.

发明人： Oleg A. Mukhanov ,  Alan M. Kadin ,  Ivan P. Nevirkovets ,  Igor V. Vernik

IPC分类号： G11C11/44 ,  H01L39/02 ,  H01L39/22

摘要： A superconducting memory cell includes a magnetic Josephson junction (MJJ) with a ferromagnetic material, having at least two switchable states of magnetization. The binary state of the MJJ manifests itself as a pulse appearing, or not appearing, on the output. A superconducting memory includes an array of memory cells. Each memory cell includes a comparator with at least one MJJ. Selected X and Y-directional write lines in their combination are capable of switching the magnetization of the MJJ. A superconducting device includes a first and a second junction in a stacked configuration. The first junction has an insulating layer barrier, and the second junction has an insulating layer sandwiched in-between two ferromagnetic layers as barrier. An electrical signal inputted across the first junction is amplified across the second junction.