“It’s a good experiment, and it’s a good first start in trying to demonstrate the effect,” says Lloyd, although he points out that that the method he originally proposed was slightly different, and potentially more powerful.
Genovese suggests that the experiment challenges the common belief that quantum schemes are highly susceptible to noise. Indeed, there have been theoretical proposals to exploit the basic physics of quantum illumination to improve the robustness of some quantum schemes, including quantum cryptography.
“Up to now, every [quantum] experiment performed was strictly limited by noise,” says Genovese. “This perspective highlights the possibility of using quantum protocols in more realistic situations.”