41. METROLOGY

41.05.+l Quantum limits

41.10.+p Quantum enhanced measurements

41.20.+c Quantum clock synchronization

41.30.+i Quantum imaging

41.40.+s Precision spectroscopy via entangled states

41.50.+n Nanomechanical sensors

41.60.+s Single electron spin measurements

41.70.+a Aligning reference frames

41.80.+c Absolute calibration of detectors

41.90.+n New sensor technologies

41.95.+m Quantum magnetometry