Qubit State Monitoring Patent for Quantum Computers Using rf-SQUIDs
Summary
USPTO published patent application US20260111778A1 titled 'Qubit State Monitoring in Quantum Computers Utilizing Radio Frequency Superconducting Quantum Interference Devices with Classical Computer Readout and Processing,' filed October 17, 2024. The application covers real-time monitoring of qubit states in quantum computers using a system based on rf-SQUIDs and direct current signal detection for superconducting quantum circuits. Inventors are Tejinder Singh and Navjot Kaur Khaira.
“The technology described herein is directed towards real-time monitoring of qubit states in quantum computers using a system based on rf-SQUIDs (radio-frequency superconducting quantum interference devices) and a direct current signal that is sourced to a superconducting quantum circuit wire, and measured by, a classical computing device.”
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What changed
USPTO published patent application US20260111778A1 covering a system for real-time monitoring of qubit states in quantum computers using radio-frequency superconducting quantum interference devices (rf-SQUIDs). The technology enables magnetic flux and inductance detection without adding load or noise to superconducting quantum circuit wires, enhancing qubit state change detection. The system provides real-time feedback to quantum processing units to maintain quantum computation integrity.
Affected parties include quantum computing hardware developers, research institutions developing superconducting quantum circuits, and companies involved in quantum computing infrastructure. This patent application establishes intellectual property protection for a specific qubit monitoring approach that could be relevant to anyone developing or commercializing superconducting quantum computer technology.
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
QUBIT STATE MONITORING IN QUANTUM COMPUTERS UTILIZING RADIO FREQUENCY SUPERCONDUCTING QUANTUM INTERFERENCE DEVICES WITH CLASSICAL COMPUTER READOUT AND PROCESSING
Application US20260111778A1 Kind: A1 Apr 23, 2026
Inventors
Tejinder Singh, Navjot Kaur Khaira
Abstract
The technology described herein is directed towards real-time monitoring of qubit states in quantum computers using a system based on rf-SQUIDs (radio-frequency superconducting quantum interference devices) and a direct current signal that is sourced to a superconducting quantum circuit wire, and measured by, a classical computing device. In one implementation, the rf-SQUIDs are positioned at strategic locations, between superconducting quantum circuit wires, in a quantum computer, such as before and after attenuators, and before parametric amplifiers. The direct current control signal facilitates the detection of magnetic flux and inductance without adding load or noise to the superconducting quantum circuit wires, which enhances the detection of qubit state changes. The monitoring and detection system dynamically and precisely monitors qubit state changes and provides real-time feedback to the quantum processing unit to adjust the qubit states, and thereby maintain the integrity of quantum computations.
CPC Classifications
G06N 10/40
Filing Date
2024-10-17
Application No.
18919173
Parties
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