Invention:
This invention involves entanglement-assisted (EA) bistatic quantum radar applications. Employing optical phase conjugation (OPC) on the transmitter side and classical coherent detection on the receiver side shows that the detection probability of the proposed EA target detection scheme significantly outperforms both classical and coherent states-based quantum detection schemes.
The system was evaluated by modeling the transmitter-target-receiver (main) channel as the lossy and noisy Bosonic channel and assuming that the distribution of entanglement over the idler channel is imperfect.
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.
However, quantum radars are difficult to implement in practice as noisy/lossy channels and decoherence plague the measurement systems. Even so, two common modern models have emerged: a quantum radar employing Lloyd’s quantum communication sensing concept and an interferometric quantum radar.
Applications:
- Secure communication
- Difficult to detect radar scanning
- Detecting objects over lossy and noisy Bosonic channels
Advantages:
- Increased sensitivity
- Increased detection probability
- Outperforms corresponding classical systems
