Quantum-enhanced interferometry with cavity QED-generated non-classical light Karol Gietka, Tomasz Wasak, Jan Chwedeńczuk, Francesco Piazza and Helmut Ritsch Eur. Phys. J. D, 71 11 (2017) 273 Published online: 02 November 2017 DOI: 10.1140/epjd/e2017-80235-2