Quantum illumination
Correlated signal and idler modes can improve target discrimination in noisy environments.
$$H_0:\rho_0,\qquad H_1:\rho_1$$
Physical intuition
Correlated signal and idler modes can improve target discrimination in noisy environments.
Deep dive: physical mechanism
Prepare entangled light, retain an idler, transmit the signal and jointly measure returns; compare error probability with an appropriate classical benchmark.
What is measured experimentally?
Target-detection error rates quantify advantage.
Assumptions, noise and limitations
High loss can destroy entanglement while leaving some correlation-based advantage; implementation is demanding.
Research and simulation exercise
Model two hypotheses with thermal background and compare decision errors.
Connect the ideas
Explore the chapter overview, learning path, and references.