Qubit Processing Method Segmentation for Scalable Quantum Computing
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Solution Overview
Problem
The challenge of scaling up quantum computing devices in the NISQ era is resource-intensive due to the complexity of performing simultaneous and complex fast pulses on large numbers of qubits, making it difficult to increase the number and density of qubits on each device.
Innovation Solution
A qubit processing method where each set of locations in a qubit processor is configured to perform a specific operation, with qubits transferred between sets to perform a series of processing steps, allowing multiple groups to be processed simultaneously, and using SiMOS technology for high-density qubit arrangements with reduced resource requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of qubits is increased to enhance computing capability, then the processing capacity is improved, but the resource intensity and device complexity increase significantly
Solution Approach 1:
The patent divides the qubit processing into distinct stages (compilation stage and run stage) and organizes qubits into groups that are processed sequentially through different location sets. Each location set is configured for specific operations, breaking down the complex simultaneous control into manageable segmented tasks that reduce overall resource requirements.
Solution Approach 2:
The patent performs configuration and setup actions during a compilation stage before the actual computation run stage. Location sets are pre-configured with specific operations, and qubit groups are prepared in advance, eliminating the need for complex real-time control during execution and reducing resource intensity during the computationally intensive phase.
2Ease of operation
If simultaneous complex fast pulses are delivered to manipulate qubit states, then the quantum logic gate operations are performed, but the engineering difficulty and resource requirements increase with more qubits
Solution Approach 1:
The patent segments the qubit array into multiple location sets, where each set is configured for specific operations. Instead of controlling all qubits simultaneously, the system manipulates one qubit group at a time through sequential location sets, dividing the complex control problem into simpler, manageable segments that can be executed with fewer resources.
Solution Approach 2:
The patent dynamically reconfigures which location sets are active and which qubit groups are being processed at any given time. The system transitions between different operational modes (compilation vs. run stage) and selectively activates location sets based on the current computation requirements, making the control system adaptable and more manageable.
3Quantity of substance
If dense qubit arrays are created to increase qubit density, then the computing power is enhanced, but the difficulty of delivering simultaneous pulses and controlling qubits increases
Solution Approach 1:
The patent organizes dense qubit arrays into segmented location sets with specific functional configurations. Each location set handles a subset of qubits with dedicated operations, allowing the system to maintain high qubit density while managing control complexity through spatial and functional segmentation of the dense array.
Solution Approach 2:
The patent assigns different operational characteristics to different location sets within the dense qubit array. Each location set is optimized for specific tasks (e.g., one-qubit operations, two-qubit interactions), allowing localized control strategies that simplify the overall control of the dense qubit population while maintaining high density benefits.
Data Source
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Figure 4A~4B
AI summary
A method for performing quantum computations in a qubit processor is provided, comprising the steps of: configuring a first location (843) in a first set of locations (802) to perform (902) a first one-qubit operation; configuring a second location (844) in the first set of locations (802) to perform (902) a second one-qubit operation; configuring a first location (845) and a second location (846) in a second set of locations (803) to enable (906) a two-qubit interaction; receiving (901) a first qubit (831) at the first location (843) in the first set of locations (802) at time t1; receiving (901) a second qubit (832) at the second location (844) in the first set of locations (802) at time h; wherein the first qubit and the second qubit are provided within a first qubit group comprising n qubits, wherein n > 2; performing (902) the first one-qubit operation on the state of the first qubit (831) at the first location (843) in the first set of locations (802); performing (902) the second one-qubit operation on the state of the second qubit (832) at the second location (844) in the first set of locations (802); transferring (903) the first qubit (831) from the first location (843) in the first set of locations (802) to the first location (845) in the second set of locations (803); transferring (903) the second qubit (832) from the second location (844) in the first set of locations (802) to the second location (846) in the second set of locations (803); enabling the two-qubit interaction (906) between the first qubit (831) and the second qubit (832) in the second set of locations (803); transferring the first qubit from the first location in the second set of locations to a first location in a readout set of locations; transferring the second qubit from the second location in the second set of locations to a second location in the readout set of locations; receiving a first qubit of a second qubit group at the first location in the first set of locations at time t2, wherein t2 > t1; receiving a second qubit of the second qubit group at the second location in the first set of locations at time t2; reading the state of the first qubit at the first location in the readout set of locations; and reading the state of the second qubit at the second location in the readout set of locations.