Home  About us  Contact
 

Entangled Photon Pairs (entangled + photon_pair)

Distribution by Scientific Domains
Physics and Astronomy100%

Selected Abstracts

Entangled photon pairs from radiative cascades in semiconductor quantum dots

PHYSICA STATUS SOLIDI (B) BASIC SOLID STATE PHYSICS, Issue 15 2006
N. Akopian
Abstract Entangled photon pairs are emitted from a biexciton decay cascade of single quantum dots when spectral filtering is applied. We show this by experimentally measuring the density matrix of the polarization state of the photon pair emitted from a continuously pumped quantum dot. The matrix clearly satisfies the Peres criterion for entanglement. By applying in addition a temporal window, the quantum dot becomes an entangled light source. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Degree of entanglement of photon pairs generated from V-type system in microcavity

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 2 2009
Hiroshi Ajiki
Abstract We propose polarization-entangled photon generation via resonant hyper-parametric scattering of a V-type system in microcavity. Although a bare V-type system cannot generate entangled photon pairs, microcavity makes the generation possible because of the formation of dressed states. In the strong-coupling limit, generation of non-entangled co-polarized photons is considerably suppressed due to the photon blockade effect. Furthermore, some entangled photons have different frequencies from those of the input fields, and thus, we can utilize spectral filtering in order to extract entangled photons. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Origin of asymmetric splitting of a neutral exciton in a single semiconductor quantum dot

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 11 2006
I. Suemune
Abstract It is well-recognized that exciton-state energy splitting makes it difficult to generate entangled photon pairs (EPP) from a single quantum dot (QD). It will be shown that the splitting of the exciton states originates from not only QD anisotropy but also ionization of residual impurities. This result shows that the growth of highly pure barrier layers will be necessary for the generation of EPP. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]