Comment on ''Effect of entanglement on the decay dynamics of a pair of H(2p) atoms due to spontaneous emission''
- Centro de Laseres Pulsados, CLPU, E-37008 Salamanca (Spain)
- Area de Optica, Departamento de Fisica Aplicada, Universidad de Salamanca, Plaza de la Merced s/n, E-37008 Salamanca (Spain)
T. Tanabe et al. [Phys. Rev. A 82, 040101(R) (2010)] have experimentally demonstrated that the emission properties of unstable atoms in entangled and product states are different. The authors define an apparent decay time as a fitting parameter which falls below the lifetime of the single atom for entangled pairs. We argue that their results about coincidence time spectra are correct, but those concerning lifetimes cannot be considered conclusive because they assume the emission of photons by the two atoms to be independent processes, a doubtful hypothesis for entangled states. We suggest an improved evaluation of the lifetimes based on a rigorous approach, which demands some modifications of the experimental procedure.
- OSTI ID:
- 21550239
- Journal Information:
- Physical Review. A, Vol. 83, Issue 6; Other Information: DOI: 10.1103/PhysRevA.83.066101; (c) 2011 American Institute of Physics; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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