2014/08/18 by Suranjana Ghosh, Utpal Roy · 10 citations
Computer Science · Mathematics · Physics and Astronomy · #Classical mechanics #Diatomic molecule #Geometry #Mathematics #Measure (data warehouse) #Mechanical and Optical Resonators #Mesoscopic physics #Molecule #Physics #Quantum #Quantum Information and Cryptography #Quantum discord #Quantum dynamics #Quantum limit #Quantum mechanics #Quantum metrology #Quantum optics and atomic interactions #Quantum state #Rotation (mathematics) #Sensitivity (control systems) #Superposition principle #quant-ph
paper · pdf · doi:10.1103/physreva.90.022113
published in Physical Review A 90(2) (American Physical Society) · 8 pages, 6 figures
openalex publication_date 2014/08/18 · arxiv created 2015/04/01 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Quantum sensitivity is an important issue in the field of quantum metrology where sub-Planck scale structures play a crucial role in the Heisenberg limited measurement. We investigate the mesoscopic superposition structures, particularly for well-known catlike and compasslike states, in the rotating Morse system where sub-Planck scale structures originate in the dynamics of a suitably constructed SU(2) coherent state. A detail study of the sensitivity analysis reveals that rotational coupling in the vibrational wave packet can be used as a probe to enhance the sensitivity limit in a diatomic molecule. The maximum sensitivity limit is identified with the rotational amendment, and a quantitative measure of the angle of rotation for different rotational levels is also given. The correspondence of the numerical result with the angle of rotation is also delineated in phase-space Wigner representation.