Invention:
An entanglement-assisted (EA) multistatic radar that significantly outperforms corresponding EA bistatic, coherent state-based quantum, and classical radars. The proposed radar employs multiple entangled transmitters performing transmit-side optical phase conjugation, multiple coherent detection-based receivers serving as EA detectors, and a joint detector.
Background:
Quantum radars offer several advantages compared to their corresponding classical counterparts: improved receiver sensitivity, better detection probability of targets in a low signal-to-noise regime, improved synthetic aperture radar imaging quality, better resilience to jamming, and increased difficulty of detection. The purpose of multistatic radars is to gain more information than would be possible using disparate radars.
Though these benefits are not without their costs. Quantum radars are difficult to implement in practice since noisy or lossy channels and decoherence plague the systems. Even so, two common modern approaches have been developed: a quantum radar employing Lloyd’s quantum communication sensing concept and an interferometric quantum radar.
Applications:
- Secure communications
- Distributed quantum sensing
- Secure distributed quantum computing
Advantages:
- Reduced susceptibility to noise and loss
- Multistatic design can outperform monostatic and bistatic radars
- Significantly outperforms other EA, quantum, and classical radars
