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High-Rate Entanglement Source via Two-Photon Emission from Semiconductor Quantum Wells | | Alex Hayat
; Pavel Ginzburg
; Meir Orenstein
; PDF only
; | | Date: |
14 Dec 2006 | | Abstract: | We propose a compact high-intensity room-temperature polarization-entangled photons source based on two-photon spontaneous emission from semiconductor quantum wells in a photonic microcavity. Second-order interaction allows much more efficient pair generation compared to a third-order parametric downconversion. The structure is pumped electrically and the cavity is designed to support two-photon transitions only for the specific signal and idler wavelengths and at a preferred direction. Cavity’s quality factor determines the emitted photons bandwidth without any additional post-selection or filtering. We estimate the cavity-controlled narrowband pair generation rate in GaAs/AlGaAs quantum well structures to be 3 orders of magnitude higher than for traditional broadband parametric downconversion based sources. | | Source: | arXiv, quant-ph/0612124 | | Services: | Forum | Review | PDF | Favorites | |
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