Quantum Network Entanglement Distribution via Linear Coding
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Solution Overview
Problem
Current quantum information processing systems face challenges in efficiently distributing entanglement between remote qubits due to bottlenecks in the network, leading to increased time for entanglement distribution and higher susceptibility to quantum decoherence and noise, which hampers computational efficiency.
Innovation Solution
A method utilizing a linear network coding solution that schedules operations between qubits in a quantum information processing system, allowing for concurrent entanglement distribution across multiple pairs of remote qubits by exploiting entanglement between adjacent qubits and using relay nodes to mediate interactions, thereby reducing the depth of the entanglement distribution circuit and maintaining quantum coherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If entanglement swapping is used to distribute entanglement between remote qubits, then entanglement can be distributed across the quantum network, but the process requires sequential operations due to network bottlenecks, increasing the time for entanglement distribution and susceptibility to quantum decoherence
Solution Approach 1:
The patent segments the entanglement distribution process by dividing the quantum network into multiple independent paths and using parallel entanglement swapping operations across different segments simultaneously, rather than sequential operations through a single bottleneck path
Solution Approach 2:
The patent merges multiple entanglement distribution paths by combining results from parallel swapping operations across different network routes, allowing concurrent distribution of entanglement to multiple remote qubit pairs through unified coordination
2Productivity
If classical network coding solutions are used to distribute multiple entangled states concurrently, then multiple entangled states can be distributed at the same time, but the time required scales with the size of the quantum network, increasing the likelihood of quantum decoherence
Solution Approach 1:
The patent implements dynamic scheduling of entanglement swapping operations that adapts to network conditions and qubit availability, optimizing the timing and ordering of operations to minimize total distribution time while maintaining concurrent operations where possible
Solution Approach 2:
The patent adds a temporal dimension to the network coding solution by implementing time-ordered layers of operations, where operations are organized into discrete time steps that allow parallel execution across spatial dimensions while coordinating resource usage through temporal scheduling
3Ease of operation
If routing of qubits is used to transmit data through the network, then data can be transmitted between remote qubits, but the data is subject to additional noise before computational operations are performed
Solution Approach 1:
The patent uses intermediary qubits that remain in the network and serve as fixed entanglement anchors, allowing remote qubits to perform operations through these intermediaries without physically moving through the noisy network channel, thereby isolating computational qubits from transmission noise
Data Source
AI summary
A method of operating a quantum information processing system. The quantum information processing system includes an array of connected qubits. The method of operating the quantum information processing system uses a linear network coding solution to performing an operation between the quantum states of two or more qubits of the array.