Rigetti & Co, LLC

Nicolas Didier

Matthew J Reagor

Chad Tyler Rigetti

Nikolas Anton Tezak

Eyob Alebachew Sete

Marcus Palmer Da Silva

Shane Arthur Caldwell

Colm Andrew Ryan

Alexander Papageorge

Deanna Margo Abrams

Sabrina Sae Byul Hong

Prasahnt Sivarajah

William J Zeng

Benjamin Jacob Bloom

Michael Justin Gerchick Scheer

Christopher Butler Osborn

Gregory M Stiehl

In a general aspect, a parametrically activated single-qubit quantum logic gate is performed in a quantum computing system. In some cases, a superconducting quantum processing unit includes a tunable qubit device. A single-qubit quantum logic gate is performed on a qubit defined by the tunable qubit device by communicating one or more control signals from a control system to the tunable qubit device. The tunable qubit device has a range of qubit operating frequencies, and the one or more control signals include only frequencies that are below the range of qubit operating frequencies.

Low-frequency activation of single-qubit quantum logic gates

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.

Parametrically activated quantum logic gates

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.

Modular control in a quantum computing system

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Nicolas Didier