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25 April 2024 |
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Spontaneous emission of a photon: wave packet structures and atom-photon entanglement | | M.V. Fedorov
; M.A. Efremov
; A.E. Kazakov
; K.W. Chan
; C.K. Law
; J.H. Eberly
; | | Date: |
14 Dec 2004 | | Subject: | quant-ph | | Abstract: | Spontaneous emission of a photon by an atom is described theoretically in three dimensions with the initial wave function of a finite-mass atom taken in the form of a finite-size wave packet. Recoil and wave-packet spreading are taken into account. The total atom-photon wave function is found in the momentum and coordinate representations as the solution of an initial-value problem. The atom-photon entanglement arising in such a process is shown to be closely related to the structure of atom and photon wave packets which can be measured in the coincidence and single-particle schemes of measurements. Two predicted effects, arising under the conditions of high entanglement, are anomalous narrowing of the coincidence wave packets and, under different conditions, anomalous broadening of the single-particle wave packets. Fundamental symmetry relations between the photon and atom single-particle and coincidence wave packet widths are established. The relationship with the famous scenario of Einstein-Podolsky-Rosen is discussed. | | Source: | arXiv, quant-ph/0412107 | | Services: | Forum | Review | PDF | Favorites | |
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