Coarsening measurement references and the quantum-to-classical transition.
We investigate the role of inefficiency in quantum measurements in the quantum-to-classical transition, and consistently observe the quantum-to-classical transition by coarsening the references of the measurements (e.g., when and where to measure). Our result suggests that the definition of measurement precision in quantum theory should include the degree of the observer's ability to precisely control the measurement references.
Center for Macroscopic Quantum Control, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea.
Hyunseok
H
Jeong
Center for Macroscopic Quantum Control, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea.
Youngrong
Y
Lim
QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
M S
MS
Kim