RTX had two patents in quantum computing during Q1 2024. The CASPER-A system by Raytheon Technologies Corp utilizes spectrally-coded taggants to authenticate devices through a multi-wavelength optical interrogation signal. The system includes a nanotag with a multi-layered nanocrystal activated composite material containing quantum dots that generate a multi-spectral emission in response to the interrogation signal. Processing circuitry decodes the response and generates a digital signature for device authentication. GlobalData’s report on RTX gives a 360-degree view of the company including its patenting strategy. Buy the report here.
RTX had no grants in quantum computing as a theme in Q1 2024.
Recent Patents
Application: Cascade spoof proof extra-layer radiant authentication (CASPER-A) system and method using spectrally-coded taggants (Patent ID: US20240028941A1)
The CASPER-A system developed by Raytheon Technologies Corp. utilizes spectrally-coded taggants to authenticate devices through a multi-wavelength optical interrogation signal transmitted to a nanotag. The nanotag consists of a multi-layered nanocrystal activated composite material with quantum dots embedded in each layer, generating a multi-spectral emission upon optical excitation. The processing circuitry decodes the response from the nanotag, generates data, and creates a digital signature for device authentication based on the unique spectral signature produced by the interaction of quantum dot emitters in the layers.
The system's processing circuitry is capable of quantizing the spectra of the multi-spectral fluorescence emission to extract encoded data within the nanotag's layers. By selecting different quantization levels, the system can determine high-level properties of the device or individual device-specific information. The nanotag's unique spectral signature is achieved through varied semiconductor compositions and dimensions of the quantum dots in the layers, providing both spectral and intensity emission diversity. Additionally, the system includes an optical transmitter for interrogation, a multi-spectral receiver with spectral matched filters, and utilizes GaN quantum dots for emission, with the spectral response determined by growth size and intensity influenced by the matrix material selection.
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