Shoukang Chang

Nov 19, 2024 | link.aps.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |Yunbin Yan |Shoukang Chang

Thermometry is a fundamental parameter estimation problem that is crucial for the advancement of natural sciences. One widely adopted approach to address this issue is the local thermometry theory, which employs classical and quantum Cramér-Rao bounds as benchmarks for thermometric precision. However, this theory is constrained to decrease temperature fluctuations around a known temperature value, hardly tackling the precision thermometry problem over a wide temperature range.