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公开(公告)号：US20230333138A1
公开(公告)日：2023-10-19
申请号：US18339705
申请日：2023-06-22
Applicant: International Business Machines Corporation
Inventor： Martin O. Sandberg , Vivekananda P. Adiga , Hanhee Paik , Jared Barney Hertzberg
Abstract: Systems, devices, computer-implemented methods, and computer program products to facilitate contactless screening of a qubit are provided. According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a scanner component that establishes a direct microwave coupling of a scanning probe device to a qubit of a quantum device. The computer executable components can further comprise a parameter extraction component that determines qubit frequency of the qubit based on the direct microwave coupling.
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公开(公告)号：US11726109B2
公开(公告)日：2023-08-15
申请号：US17137009
申请日：2020-12-29
Applicant: International Business Machines Corporation
Inventor： Martin O. Sandberg , Vivekananda P. Adiga , Hanhee Paik , Jared Barney Hertzberg
Abstract: Systems, devices, computer-implemented methods, and computer program products to facilitate contactless screening of a qubit are provided. According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a scanner component that establishes a direct microwave coupling of a scanning probe device to a qubit of a quantum device. The computer executable components can further comprise a parameter extraction component that determines qubit frequency of the qubit based on the direct microwave coupling.
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公开(公告)号：US20220285818A1
公开(公告)日：2022-09-08
申请号：US17191275
申请日：2021-03-03
Applicant: International Business Machines Corporation
Inventor： Abram L. Falk , Chi Xiong , Swetha Kamlapurkar , Hanhee Paik , Jason S. Orcutt
Abstract: Techniques regarding quantum transducers are provided. For example, one or more embodiments described herein can include an apparatus that can include a superconducting microwave resonator having a microstrip architecture that includes a dielectric layer positioned between a superconducting waveguide and a ground plane. The apparatus can also include an optical resonator positioned within the dielectric layer.
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公开(公告)号：US20220149263A1
公开(公告)日：2022-05-12
申请号：US17450769
申请日：2021-10-13
Applicant: International Business Machines Corporation
Inventor： Richard Alan Haight , Vivekananda P. Adiga , Martin O. Sandberg , Hanhee Paik
Abstract: Techniques regarding encapsulating one or more superconducting devices of a quantum processor are provided. For example, one or more embodiments described herein can regard a method that can comprise depositing a metal fluoride layer onto a superconducting resonator and a silicon substrate that can be comprised within a quantum processor. The superconducting resonator can be positioned on the silicon substrate. Also, the metal fluoride layer can coat the superconducting resonator.
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公开(公告)号：US20210399192A1
公开(公告)日：2021-12-23
申请号：US16908704
申请日：2020-06-22
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Douglas Max Gill , Martin O. Sandberg , Vivekananda P. Adiga , Yves Martin , Hanhee Paik
Abstract: A method for improving lifetime and coherence time of a qubit in a quantum mechanical device is provided. The method includes providing a substrate having a frontside and a backside, the frontside having at least one qubit formed thereon, the at least one qubit having capacitor pads. The method further includes at least one of removing an amount of substrate material from the backside of the substrate at an area opposite the at least one qubit or depositing a superconducting metal layer at the backside of the substrate at the area opposite the at least one qubit to reduce radiofrequency electrical current loss due to at least one of silicon-air (SA) interface, metal-air (MA) interface or silicon-metal (SM) interface so as to enhance a lifetime (T1) and a coherence time (T2) in the at least one qubit.
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Patent Agency Ranking
公开(公告)号：US11195773B2
公开(公告)日：2021-12-07
申请号：US16839248
申请日：2020-04-03
Applicant: International Business Machines Corporation
Inventor： Jae-Woong Nah , Hanhee Paik , Jerry M. Chow
IPC: H01L23/48 , H01L23/52 , H01L23/367 , G06N10/00 , H01L23/498 , H01L23/544 , H01L23/00 , H01L39/04 , H01L39/22
Abstract: In an embodiment, a quantum device includes an interposer layer comprising a set of vias. In an embodiment, the quantum device includes a dielectric layer formed on a first side of the interposer, the dielectric layer including a set of transmission lines communicatively coupled to the set of vias. In an embodiment, the quantum device includes a plurality of qubit chips coupled to an opposite side of the interposer layer, each qubit chip of the plurality of qubit chips including: a plurality of qubits on a first side of the qubit chip and a plurality of protrusions on a second side of the qubit chip. In an embodiment, the quantum device includes a heat sink thermally coupled with the plurality of qubit chips, the heat sink comprising a plurality of recesses aligned with the plurality of protrusions of the plurality of qubit chips.
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公开(公告)号：US10586911B1
公开(公告)日：2020-03-10
申请号：US16125098
申请日：2018-09-07
Applicant: International Business Machines Corporation
Inventor： Martin O. Sandberg , Vivekananda P. Adiga , Hanhee Paik
IPC: H01L39/02 , H01L39/24 , H01L39/06 , G01R33/022 , G01R33/035 , H01L39/08
Abstract: Techniques regarding parallel gradiometric SQUIDs and the manufacturing thereof are provided. For example, one or more embodiments described herein can comprise an apparatus, which can comprise a first pattern of superconducting material located on a substrate. Also, the apparatus can comprise a second pattern of superconducting material that can extend across the first pattern of superconducting material at a position. Further, the apparatus can comprise a Josephson junction located at the position, which can comprise an insulating barrier that can connect the first pattern of superconductor material and the second pattern of superconductor material.
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公开(公告)号：US10295582B2
公开(公告)日：2019-05-21
申请号：US15198240
申请日：2016-06-30
Applicant: International Business Machines Corporation
Inventor： Lev S. Bishop , Jay M. Gambetta , Jason S. Orcutt , Hanhee Paik , James R. Rozen
Abstract: Techniques relate to reading a qubit coupled to a microwave resonator. A microwave signal at a microwave resonator frequency is input to the microwave resonator that couples to the qubit. A microwave readout signal from the microwave resonator is output to a microwave to optical converter. The microwave readout signal includes a qubit state of the qubit. The microwave to optical converter is configured to convert the microwave readout signal to an optical signal. In response to the optical signal being output by the microwave to optical converter, it is determined that the qubit is in a predefined qubit state. In response to no optical signal being output by the microwave to optical converter, it is determined that the qubit is not in the predefined qubit state.
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19.发明申请公开(公告)号：US20180003753A1
公开(公告)日：2018-01-04
申请号：US15198240
申请日：2016-06-30
Applicant: International Business Machines Corporation
Inventor： Lev S. Bishop , Jay M. Gambetta , Jason S. Orcutt , Hanhee Paik , James R. Rozen
IPC: G01R29/08
CPC classification number: G01R29/0885 , G01R29/0892 , G06N99/002
Abstract: Techniques relate to reading a qubit coupled to a microwave resonator. A microwave signal at a microwave resonator frequency is input to the microwave resonator that couples to the qubit. A microwave readout signal from the microwave resonator is output to a microwave to optical converter. The microwave readout signal includes a qubit state of the qubit. The microwave to optical converter is configured to convert the microwave readout signal to an optical signal. In response to the optical signal being output by the microwave to optical converter, it is determined that the qubit is in a predefined qubit state. In response to no optical signal being output by the microwave to optical converter, it is determined that the qubit is not in the predefined qubit state.
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公开(公告)号：US12001769B2
公开(公告)日：2024-06-04
申请号：US17342815
申请日：2021-06-09
Applicant: International Business Machines Corporation
Inventor： Hanhee Paik , Firat Solgun , Salvatore Bernardo Olivadese , Martin O. Sandberg , Jay M. Gambetta
IPC: G06N10/00 , G06F30/3323 , G06F30/367 , G06N7/04
CPC classification number: G06F30/3323 , G06F30/367 , G06N10/00 , G06N7/04
Abstract: Techniques and a system for quantum computing device modeling and design are provided. In one example, a system includes a modeling component and a simulation component. The modeling component models a quantum device element of a quantum computing device as an electromagnetic circuit element to generate electromagnetic circuit data for the quantum computing device. The simulation component simulates the quantum computing device using the electromagnetic circuit data to generate response function data indicative of a response function for the quantum computing device. Additionally or alternatively, a Hamiltonian is constructed based on the response function.
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