Patents by Inventor Theodore James Yoder
Theodore James Yoder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250181952Abstract: According to an embodiment, a structure for a qubit architecture is presented. The structure may include a plurality of qubits. The structure may include a plurality of couplings between each qubits. The couplings are arranged based on a relationship between each qubit and its placement on a torus. The coupling for each qubit comprises coupling to four nearest neighbor qubits on the torus and coupling to two cross-coupled qubits based on a definition and a set of parameters of a bivariate bicycle code. Methods for using and manufacturing the qubit architecture are additionally presented.Type: ApplicationFiled: December 3, 2023Publication date: June 5, 2025Inventors: Sergey Bravyi, Andrew W. Cross, Jay Michael Gambetta, Dmitri Maslov, Patrick Julian Tassilo Rall, Kevin Tien, Theodore James Yoder
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Publication number: 20250181953Abstract: According to an embodiment of the present invention, a system may include a quantum memory module, a magic state preparation module, and a quantum computation module. The quantum computation module is coupled to either the quantum memory module or the quantum magic state preparation module using an 1-coupler. This may enable optimization of the hardware to more efficiently perform quantum computations. According to another embodiment of the present invention, a modular system may include a plurality of quantum systems, where the quantum systems are connected using 1-couplers according to a tree diagram. This may enable optimization of the hardware to more efficiently perform quantum computations.Type: ApplicationFiled: December 3, 2023Publication date: June 5, 2025Inventors: Andrew W. Cross, Shawn Anthony Hall, Patrick Julian Tassilo Rall, Theodore James Yoder
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Patent number: 12271786Abstract: According to an embodiment of the present invention, a method, system, and computer program product for preparing a CZ state for use in magic state distillation. The embodiment may include initializing a code state across data qubits. The embodiment may include measuring a CZ operator of the codes state on at least one ancilla qubit proximal to the data qubits. The embodiment may include performing additional quantum operations with the CZ state based on the measurement of the at least one ancilla qubit.Type: GrantFiled: November 7, 2022Date of Patent: April 8, 2025Assignee: International Business Machines CorporationInventors: Benjamin James Brown, Andrew W. Cross, Riddhi Swaroop Gupta, Tomas Raphael Jochym-O'Connor, Theodore James Yoder
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Publication number: 20240152335Abstract: According to an embodiment of the present invention, a method, system, and computer program product for preparing a CZ state for use in magic state distillation. The embodiment may include initializing a code state across data qubits. The embodiment may include measuring a CZ operator of the codes state on at least one ancilla qubit proximal to the data qubits. The embodiment may include performing additional quantum operations with the CZ state based on the measurement of the at least one ancilla qubit.Type: ApplicationFiled: November 7, 2022Publication date: May 9, 2024Inventors: Benjamin James Brown, Andrew W. Cross, Riddhi Swaroop Gupta, Tomas Raphael Jochym-O'Connor, Theodore James Yoder
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Patent number: 11803441Abstract: Techniques regarding calibrating one or more quantum decoder algorithms are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a correlation inversion decoder component that can calibrate a quantum decoder algorithm for decoding a quantum error-correcting code by estimating hyperedge probabilities of a decoding hypergraph that are consistent with a syndrome dataset.Type: GrantFiled: September 30, 2021Date of Patent: October 31, 2023Assignee: International Business Machines CorporationInventors: Edward Hong Chen, Andrew W. Cross, Youngseok Kim, Neereja Sundaresan, Maika Takita, Antonio Corcoles-Gonzalez, Theodore James Yoder
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Publication number: 20230299791Abstract: Techniques regarding quantum error correction are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a maximum-likelihood decoder component that executes a maximum-likelihood decoding algorithm to determine an error correction based on a decoding hypergraph that characterizes error-sensitive events associated with a quantum error-correcting code executed on a quantum circuit.Type: ApplicationFiled: May 25, 2023Publication date: September 21, 2023Inventor: Theodore James Yoder
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Publication number: 20230291419Abstract: Techniques regarding quantum error correction are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a maximum-likelihood decoder component that executes a maximum-likelihood decoding algorithm to determine an error correction based on a decoding hypergraph that characterizes error-sensitive events associated with a quantum error-correcting code executed on a quantum circuit.Type: ApplicationFiled: March 11, 2022Publication date: September 14, 2023Inventor: Theodore James Yoder
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Patent number: 11736122Abstract: Techniques regarding quantum error correction are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a maximum-likelihood decoder component that executes a maximum-likelihood decoding algorithm to determine an error correction based on a decoding hypergraph that characterizes error-sensitive events associated with a quantum error-correcting code executed on a quantum circuit.Type: GrantFiled: March 11, 2022Date of Patent: August 22, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Theodore James Yoder
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Publication number: 20230196156Abstract: Techniques regarding compiling quantum circuits with parallelized entangled measurements are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a circuit compilation component that can compile one or more quantum circuits for a hybrid quantum-classical algorithm. The one or more quantum circuits can include a mid-circuit operation to parallelize entangled measurements.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Inventors: Edward Hong Chen, Andrew Eddins, Theodore James Yoder
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Publication number: 20230094612Abstract: Techniques regarding calibrating one or more quantum decoder algorithms are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a correlation inversion decoder component that can calibrate a quantum decoder algorithm for decoding a quantum error-correcting code by estimating hyperedge probabilities of a decoding hypergraph that are consistent with a syndrome dataset.Type: ApplicationFiled: September 30, 2021Publication date: March 30, 2023Inventors: Edward Hong Chen, Andrew W. Cross, Youngseok Kim, Neereja Sundaresan, Maika Takita, Antonio Corcoles-Gonzalez, Theodore James Yoder
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Patent number: 11455207Abstract: A method of error correction for a quantum computer includes identifying each of a plurality of physical qubits arranged in a lattice pattern over a surface in a quantum processor of the quantum computer as a one of a data qubit, an ancilla qubit or a flag qubit to define a plurality of data qubits, ancilla qubits and flag qubits. Each pair of interacting data qubits interact with a flag qubit and adjacent flag qubits both interact with a common ancilla qubit. The method further includes performing measurements of weight-four stabilizers, weight-two stabilizers, or both of a surface code formed using at least a sub-plurality of the plurality of physical qubits, or performing measurements of weight-four Bacon-Shor type gauge operators; and correcting fault-tolerantly quantum errors in one or more of the at least sub-plurality of physical qubits based on a measurement from at least one flag qubit.Type: GrantFiled: July 15, 2019Date of Patent: September 27, 2022Assignee: International Business Machines CorporationInventors: Christopher Chamberland, Guanyu Zhu, Theodore James Yoder, Andrew W. Cross
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Patent number: 11449783Abstract: Techniques regarding encoding a quantum circuit to a trivalent lattice scheme to identify flag qubit outcomes are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a graph component that can encode a quantum circuit to a trivalent lattice that maps an ancilla qubit to a plurality of data qubits via a plurality of flag qubits based on a connectivity scheme of the quantum circuit.Type: GrantFiled: October 23, 2019Date of Patent: September 20, 2022Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Christopher Chamberland, Theodore James Yoder, Andrew W. Cross, Guanyu Zhu
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Publication number: 20210125094Abstract: Techniques regarding encoding a quantum circuit to a trivalent lattice scheme to identify flag qubit outcomes are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a graph component that can encode a quantum circuit to a trivalent lattice that maps an ancilla qubit to a plurality of data qubits via a plurality of flag qubits based on a connectivity scheme of the quantum circuit.Type: ApplicationFiled: October 23, 2019Publication date: April 29, 2021Inventors: Christopher Chamberland, Theodore James Yoder, Andrew W. Cross, Guanyu Zhu
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Publication number: 20210019223Abstract: A method of error correction for a quantum computer includes identifying each of a plurality of physical qubits arranged in a lattice pattern over a surface in a quantum processor of the quantum computer as a one of a data qubit, an ancilla qubit or a flag qubit to define a plurality of data qubits, ancilla qubits and flag qubits. Each pair of interacting data qubits interact with a flag qubit and adjacent flag qubits both interact with a common ancilla qubit. The method further includes performing measurements of weight-four stabilizers, weight-two stabilizers, or both of a surface code formed using at least a sub-plurality of the plurality of physical qubits, or performing measurements of weight-four Bacon-Shor type gauge operators; and correcting fault-tolerantly quantum errors in one or more of the at least sub-plurality of physical qubits based on a measurement from at least one flag qubit.Type: ApplicationFiled: July 15, 2019Publication date: January 21, 2021Inventors: Christopher Chamberland, Guanyu Zhu, Theodore James Yoder, Andrew W. Cross