Energy-tunable sources of entangled photons: a viable concept for solid-state-based quantum relays.
Phys Rev Lett
; 114(15): 150502, 2015 Apr 17.
Article
em En
| MEDLINE
| ID: mdl-25933298
ABSTRACT
We propose a new method of generating triggered entangled photon pairs with wavelength on demand. The method uses a microstructured semiconductor-piezoelectric device capable of dynamically reshaping the electronic properties of self-assembled quantum dots (QDs) via anisotropic strain engineering. Theoretical models based on k·p theory in combination with finite-element calculations show that the energy of the polarization-entangled photons emitted by QDs can be tuned in a range larger than 100 meV without affecting the degree of entanglement of the quantum source. These results pave the way towards the deterministic implementation of QD entanglement resources in all-electrically-controlled solid-state-based quantum relays.
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MEDLINE
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En
Ano de publicação:
2015
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Article