Phys. Rev. Lett. 83, 3021–3024 (1999)Spontaneous Emission of Phonons by Coupled Quantum DotsReceived 14 May 1999; published in the issue dated 11 October 1999 We find an interference effect for electron-phonon interactions in coupled semiconductor quantum dots that can dominate the nonlinear transport properties even for temperatures close to zero. The intradot electron tunneling process leads to a “shake up” of the phonon system and is dominated by a double-slit-like interference effect of spontaneously emitted phonons. The effect is closely related to subradiance of photons (Dicke effect) in a laser-trapped two-ion system and explains the oscillations in the nonlinear current-voltage characteristics of coupled dots observed recently. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.3021
DOI:
10.1103/PhysRevLett.83.3021
PACS:
73.23.Hk, 42.50.Fx, 71.38.+i
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