![Fidelity, Fisher Information, QCRB and All that [pt. 1]](/content/images/size/w600/2025/05/IMG_3285.jpeg)
Quantum Sensing
Fidelity, Fisher Information, QCRB and All that [pt. 1]
What about those time-energy and number-phase uncertainty relations? The way the time-energy uncertainty was often explained to me when I first learned quantum mechanics felt pretty hand-wavy ... The QCRB solves this and puts these uncertainty relations on a proper footing.