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公开(公告)号：US11900212B1
公开(公告)日：2024-02-13
申请号：US17185675
申请日：2021-02-25
申请人： Rigetti & Co, LLC
IPC分类号： G06F11/10 , G11C16/26 , G11C16/20 , G11C16/04 , G06N10/00 , G01R31/3177 , G06N20/00 , G06N3/08
CPC分类号： G06N10/00 , G01R31/3177 , G06N3/08 , G06N20/00
摘要： In a general aspect, a quantum process for execution by a quantum processor is generated. In some instances, test data representing a test output of a quantum process are obtained. The test data are obtained based on a value assigned to a variable parameter of the quantum process. An objective function is evaluated based on the test data, and an updated value is assigned to the variable parameter based on the evaluation of the objective function. The quantum process is provided for execution by a quantum processor, and the quantum process provided for execution has the updated value assigned to the variable parameter.
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公开(公告)号：US20230394342A1
公开(公告)日：2023-12-07
申请号：US18155903
申请日：2023-01-18
申请人： Rigetti & Co, LLC
发明人： Benjamin Jacob Bloom , Shane Arthur Caldwell , Michael James Curtis , Matthew J. Reagor , Chad Tyler Rigetti , Eyob A. Sete , William J. Zeng , Peter Jonathan Karalekas , Nikolas Anton Tezak , Nasser Alidoust
IPC分类号： G06N10/00 , H03K19/195
CPC分类号： G06N10/00 , H03K19/195
摘要： In a general aspect, calibration is performed in a quantum computing system. In some cases, domains of a quantum computing system are identified, where the domains include respective domain control subsystems and respective subsets of quantum circuit devices in a quantum processor of the quantum computing system. Sets of measurements are obtained from one of the domains and stored in memory. Device characteristics of the quantum circuit devices of the domain are obtained based on the set of measurements, and the device characteristics are stored in a memory of the control system. Quantum logic control parameters for the subset of quantum circuit devices of the domain are obtained based on the set of measurements and stored in memory.
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公开(公告)号：US11770982B1
公开(公告)日：2023-09-26
申请号：US17397015
申请日：2021-08-09
申请人： Rigetti & Co, LLC
发明人： Jayss Daniel Marshall , Chih-Yang Li , Biswajit Sur , Nagesh Vodrahalli , Mehrnoosh Vahidpour , William Austin O'Brien, IV , Andrew Joseph Bestwick , Chad Tyler Rigetti , James Russell Renzas
CPC分类号： H10N60/805 , G06N10/00 , H01L24/11 , H01L24/13 , H01L24/16 , H01L24/81 , H10N60/0156 , H10N60/0912 , H10N60/85 , H01L2224/1146 , H01L2224/11452 , H01L2224/1318 , H01L2224/13082 , H01L2224/13083 , H01L2224/13084 , H01L2224/13109 , H01L2224/13124 , H01L2224/13164 , H01L2224/13166 , H01L2224/13179 , H01L2224/13183 , H01L2224/13184 , H01L2224/16238 , H01L2224/81193 , H01L2224/81815 , H01L2924/1432
摘要： In a general aspect, an integrated quantum circuit includes a first substrate and a second substrate. The first substrate includes a first surface and a recess formed in the first substrate along the first surface. The recess has a recess surface and is configured to enclose a quantum circuit element. The first substrate includes a first electrically-conductive layer disposed on the first surface and covering at least a portion of the recess surface. The first electrically-conductive layer includes a first superconducting material. The second substrate includes a second surface and a quantum circuit element. The second substrate includes a second electrically-conductive layer on the second surface that includes a second superconducting material. The first substrate is adjacent the second substrate to enclose the quantum circuit device within the recess. The first electrically-conductive layer of the first substrate is electrically-coupled to the second electrically-coupled layer of the second substrate.
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公开(公告)号：US20240364345A1
公开(公告)日：2024-10-31
申请号：US18637081
申请日：2024-04-16
申请人： Rigetti & Co, LLC
发明人： Eyob A. Sete , Nicolas Didier , Marcus Palmer da Silva , Chad Tyler Rigetti , Matthew J. Reagor , Shane Arthur Caldwell , Nikolas Anton Tezak , Colm Andrew Ryan , Sabrina Sae Byul Hong , Prasahnt Sivarajah , Alexander Papageorge , Deanna Margo Abrams
IPC分类号： H03K19/195 , G06N10/00
CPC分类号： H03K19/195 , G06N10/00
摘要： In a general aspect, a quantum logic gate is performed in a quantum computing system. In some cases, a pair of qubits are defined in a quantum processor; the pair of qubits can include a first qubit defined by a first qubit device in the quantum processor and a second qubit defined by a tunable qubit device in the quantum processor. A quantum logic gate can be applied to the pair of qubits by communicating a control signal to a control line coupled to the tunable qubit device. The control signal can be configured to modulate a transition frequency of the tunable qubit device at a modulation frequency, and the modulation frequency can be determined based on a transition frequency of the first qubit device.
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公开(公告)号：US20220231690A1
公开(公告)日：2022-07-21
申请号：US17410042
申请日：2021-08-24
申请人： Rigetti & Co, LLC
发明人： Eyob A. Sete , Nicolas Didier , Marcus Palmer da Silva , Chad Tyler Rigetti , Matthew J. Reagor , Shane Arthur Caldwell , Nikolas Anton Tezak , Colm Andrew Ryan , Sabrina Sae Byul Hong , Prasahnt Sivarajah , Alexander Papageorge , Deanna Margo Abrams
IPC分类号： H03K19/195 , G06N10/00
摘要： In a general aspect, a quantum logic gate is performed in a quantum computing system. In some cases, a pair of qubits are defined in a quantum processor; the pair of qubits can include a first qubit defined by a first qubit device in the quantum processor and a second qubit defined by a tunable qubit device in the quantum processor. A quantum logic gate can be applied to the pair of qubits by communicating a control signal to a control line coupled to the tunable qubit device. The control signal can be configured to modulate a transition frequency of the tunable qubit device at a modulation frequency, and the modulation frequency can be determined based on a transition frequency of the first qubit device.
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公开(公告)号：US11379751B1
公开(公告)日：2022-07-05
申请号：US16951016
申请日：2020-11-18
申请人： Rigetti & Co, LLC
摘要： In a general aspect, information is encoded in data qubits in a three-dimensional device lattice. The data qubits reside in multiple layers of the three-dimensional device lattice, and each layer includes a respective two-dimensional device lattice. A three-dimensional color code is applied in the three-dimensional device lattice to detect errors in the data qubits residing in the multiple layers. A two-dimensional color code is applied in the two-dimensional device lattice in each respective layer to detect errors in one or more of the data qubits residing in the respective layer.
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公开(公告)号：US11276727B1
公开(公告)日：2022-03-15
申请号：US16012262
申请日：2018-06-19
申请人： Rigetti & Co, LLC
发明人： James Russell Renzas , Jayss Daniel Marshall , Cat-Vu Huu Bui , Mehrnoosh Vahidpour , William Austin O'Brien, IV , Andrew Joseph Bestwick , Chad Tyler Rigetti , Keith Matthew Jackson
IPC分类号： H01L27/18 , H01L23/538 , H05K1/11 , H01L39/22 , H01L23/552 , G06N10/00
摘要： In a general aspect, a superconducting via for routing electrical signals through a substrate includes the substrate and a layer formed of superconducting material. The substrate has a first orifice disposed on a first surface and a second orifice disposed on a second surface. A cavity extends through the substrate from the first orifice to the second orifice. The layer of superconducting material includes a first portion occluding the first orifice and having an exterior surface facing outward from the substrate. The layer also includes a second portion in contact with a side wall of the cavity and extending to the second orifice. A quantum circuit element may optionally be disposed on the first surface and electrically coupled to the exterior surface of the first portion of the layer.
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公开(公告)号：US20240146307A1
公开(公告)日：2024-05-02
申请号：US18307647
申请日：2023-04-26
申请人： Rigetti & Co, LLC
发明人： Eyob A. Sete , Nicolas Didier , Marcus Palmer da Silva , Chad Tyler Rigetti , Matthew J. Reagor , Shane Arthur Caldwell , Nikolas Anton Tezak , Colm Andrew Ryan , Sabrina Sae Byul Hong , Prasahnt Sivarajah , Alexander Papageorge , Deanna Margo Abrams
IPC分类号： H03K19/195 , G06N10/00
CPC分类号： H03K19/195 , G06N10/00
摘要： In a general aspect, a quantum logic gate is performed in a quantum computing system. In some cases, a pair of qubits are defined in a quantum processor; the pair of qubits can include a first qubit defined by a first qubit device in the quantum processor and a second qubit defined by a tunable qubit device in the quantum processor. A quantum logic gate can be applied to the pair of qubits by communicating a control signal to a control line coupled to the tunable qubit device. The control signal can be configured to modulate a transition frequency of the tunable qubit device at a modulation frequency, and the modulation frequency can be determined based on a transition frequency of the first qubit device.
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公开(公告)号：US11954562B2
公开(公告)日：2024-04-09
申请号：US17549434
申请日：2021-12-13
申请人： Rigetti & Co, LLC
发明人： Matthew J. Reagor , William J. Zeng , Michael Justin Gerchick Scheer , Benjamin Jacob Bloom , Nikolas Anton Tezak , Nicolas Didier , Christopher Butler Osborn , Chad Tyler Rigetti
IPC分类号： G06F8/40 , G06F15/76 , G06F15/82 , G06N10/00 , H03K19/195
CPC分类号： G06N10/00 , G06F15/76 , G06F15/82 , H03K19/195
摘要： In a general aspect, a quantum computing method is described. In some aspects, a control system in a quantum computing system assigns subsets of qubit devices in a quantum processor to respective cores. The control system identifies boundary qubit devices residing between the cores in the quantum processor and generates control sequences for each respective core. A signal delivery system in communication with the control system and the quantum processor receives control signals to execute the control sequences, and the control signals are applied to the respective cores in the quantum processor.
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公开(公告)号：US11941482B1
公开(公告)日：2024-03-26
申请号：US17196692
申请日：2021-03-09
申请人： Rigetti & Co, LLC
CPC分类号： G06N10/00 , G06F9/30043 , G06F9/3877 , G06F15/16
摘要： In some aspects, a heterogeneous computing system includes a quantum processor unit and a classical processor unit. In some instances, variables defined by a computer program are stored in a classical memory in the heterogeneous computing system. The computer program is executed in the heterogeneous computing system by operation of the quantum processor unit and the classical processor unit. Instructions are generated for the quantum processor by a host processor unit based on values of the variables stored in the classical memory. The instructions are configured to cause the quantum processor unit to perform a data processing task defined by the computer program. The values of the variables are updated in the classical memory based on output values generated by the quantum processor unit. The classical processor unit processes the updated values of the variables.
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