Quantum Data Processing with Buffered Error-Corrected Storage
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Solution Overview
Problem
Conventional quantum data processing systems destroy quantum information early in the process, leading to exponentially costly data purification and extraction steps, particularly when interfacing with classical systems.
Innovation Solution
The system employs quantum sensors that interface with quantum devices, utilizing quantum transduction and storage techniques to collect and process data over multiple repetitions, enabling exponential advantages in measurement efficiency and sensitivity, even with noisy quantum memory and processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum sensors interface with classical systems, then data can be processed using conventional methods, but quantum information is destroyed early leading to exponentially costly purification steps
Solution Approach 1:
The patent introduces a quantum buffer as an intermediary component between the quantum sensor and quantum memory. This buffer temporarily stores quantum states during transfer, preventing premature measurement and information loss. The buffer acts as a mediator that maintains quantum coherence while enabling data flow between different quantum system components, thus preserving quantum information while improving processing efficiency.
Solution Approach 2:
The system performs preliminary quantum error correction encoding before storing quantum states in quantum memory. By applying error correcting codes in advance during the buffer stage, the system prepares quantum states to be resilient against noise and decoherence before they are stored and processed later, preventing information degradation rather than attempting to recover it after loss.
2Productivity
If quantum states are stored in quantum memory for multiple repetitions, then measurement efficiency improves, but noise accumulation in noisy quantum memory worsens
Solution Approach 1:
The system applies quantum error correction encoding preliminarily before storing quantum states in quantum memory. This pre-encoding protects quantum states against noise accumulation during storage by distributing quantum information across multiple physical qubits in an error-corrected format, enabling long-term storage without significant fidelity loss even in noisy quantum memory environments.
Solution Approach 2:
The system implements continuous monitoring and correction of quantum states during storage in quantum memory. By measuring syndrome qubits and applying corrective operations based on detected errors, the system actively compensates for noise accumulation, maintaining quantum state fidelity over extended storage periods while allowing multiple repetitions for improved measurement efficiency.
3Reliability
If quantum error correction is applied, then quantum information is protected from noise, but device complexity increases
Solution Approach 1:
The quantum system is segmented into distinct functional modules: quantum sensor, quantum buffer, quantum memory, and classical control system. Each module handles specific tasks, with error correction implemented as a separate encoding layer. This segmentation allows error protection to be added without fundamentally redesigning the entire system architecture, managing complexity through modular organization.
Solution Approach 2:
The quantum buffer serves as an intermediary that implements error correction encoding without requiring direct modification of the quantum memory or sensor architecture. By placing the error correction functionality in the buffer layer, the system protects quantum information while maintaining the simplicity of underlying components, reducing overall device complexity.
Data Source
AI summary
Methods, systems, and apparatus for quantum data processing. In one aspect, a method includes storing, in a quantum memory, multiple copies of a quantum state, comprising, for each copy of the quantum state, i) probing, by an initialized quantum sensor, a target system to obtain an evolved quantum state of the quantum sensor, ii) transducing the evolved quantum state of the quantum sensor into a quantum state of a quantum buffer, iii) logically encoding the quantum state of the quantum buffer into a quantum error correcting code, and iv) moving the logically encoded quantum state of the quantum buffer into the quantum memory; loading the multiple copies of the quantum state in the quantum memory into a quantum computer; processing, by the quantum computer, the multiple copies of the quantum state to obtain a purified quantum state; and measuring the purified quantum state to determine properties of the target system.