The elusive Heisenberg limit in quantum-enhanced metrology
The elusive Heisenberg limit in quantum-enhanced metrology
Quantum precision enhancement is of fundamental importance for the development of advanced metrological optical experiments, such as gravitational wave detection and frequency calibration with atomic clocks. Precision in these experiments is strongly limited by the 1/√N shot noise factor with N being the number of probes (photons, atoms) employed in …