Photonic Multiplexer Routing for Reliable Single-Photon Delivery
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Solution Overview
Problem
Single-photon sources exhibit low efficiency and reliability, with probabilities of success less than 100% and potential for multiple photon emission, which hampers their application in quantum computing and other fields.
Innovation Solution
A photonic multiplexer device comprising a plurality of switches and channels that multiplex photons from multiple single-photon sources, enhancing efficiency and reliability by routing photons to preselected channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple single-photon sources are combined to improve efficiency, then the probability of successful single-photon generation increases, but the complexity of the device increases due to the need for multiplexing and routing mechanisms
Solution Approach 1:
The system divides multiple single-photon sources into separate channels, each with its own switch, allowing independent control and combination of photon streams from different sources to achieve higher overall efficiency
Solution Approach 2:
The multiplexer device provides universal routing capability that can handle photons from any of the multiple sources and direct them to any output channel, making the system adaptable and efficient across different source configurations
2Reliability
If switches are used to route photons to preselected channels, then the reliability of single-photon delivery is improved, but the device complexity increases due to additional switching components
Solution Approach 1:
The switches are configured in advance to route photons from specific sources to predetermined output channels based on which source successfully generated a photon, ensuring reliable delivery without requiring complex real-time decision-making
Solution Approach 2:
The switch acts as an intermediary component that simplifies the routing function by providing a straightforward mechanism to direct photons from multiple sources to the correct output channel based on source success
Data Source
AI summary
A system includes a plurality of inputs to receive light, a first layer of switches optically coupled to the plurality of inputs, a second layer of switches optically coupled to the first layer of switches, a plurality of outputs coupled to the second layer of switches, and control circuitry. The control circuitry receives signaling indicating a subset of the plurality of inputs containing the light. In response to the signaling, the control circuitry identifies switch settings for the first layer of switches and the second layer of switches, and sets the first layer of switches and the second layer of switches according to the switch settings.