Excessive precision compromises accuracy even with unlimited resources due to the trade-off in quantum metrology
Abstract This paper provides a unified definition of precision and accuracy from the perspective of distinguishing neighboring quantum states. We find that the conventional quantum Cramér–Rao bound underestimates the effect of statistical noise, because the biases of parameters were inappropriately...
| Published in: | npj Quantum Information |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
|
| Online Access: | https://doi.org/10.1038/s41534-025-01071-4 |