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Compact all-fiber quantum-inspired LiDAR with over 100 dB noise rejection and single photon sensitivity
Han Liu1, Changhao Qin2, Georgios Papangelakis2
1The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada. qwerty.liu@mail.utoronto.ca.
This study introduces a quantum-inspired LiDAR system that uses classical light correlations to achieve high noise rejection, overcoming the power limitations of traditional quantum LiDAR. The technology offers enhanced sensitivity for advanced sensing and quantum information applications.
Area of Science:
- Quantum optics
- LiDAR technology
- Classical correlation
Background:
- Quantum light entanglement enhances LiDAR sensitivity in noisy environments.
- Quantum LiDAR sources have limited power, restricting their detection range compared to classical systems.
Purpose of the Study:
- To develop and demonstrate a quantum-inspired LiDAR prototype using classical time-frequency correlation.
- To maintain the noise rejection benefits of quantum LiDAR with a high-power classical source.
- To explore the potential of the LiDAR receiver for quantum information applications.
Main Methods:
- Utilizing coherent measurement of classical time-frequency correlation.
- Employing a high-power classical light source.
- Demonstrating over 100dB rejection of in-band noise with 100ms integration time.
Main Results:
- The quantum-inspired LiDAR prototype achieves high noise rejection (over 100dB) against indistinguishable noise.
- The system remains sensitive to single photon signals despite strong background noise.
- The chaotic quantum frequency conversion technique shows potential for manipulating high-dimensional quantum states.
Conclusions:
- The developed quantum-inspired LiDAR offers a viable solution for high-sensitivity, long-range sensing in noisy conditions.
- The proposed techniques have implications for advancing quantum information processing and quantum communication.
