Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Two Photon Emission, Entanglement and Gain from Semiconductors at Room Temperature

Meir Orenstein, Alex Hayat, Amir Nevet, Pavel Ginzburg, Serge Rosenblum

Published Jan 1, 2010• 0 citations
Publisher

Abstract

The first observation of two-photon emission from semiconductors and its applications are presented theoretically and experimentally. Entanglement sources are proposed and two-photon gain is measured in electrically-pumped devices at room temperature, promising giant pulse generation.
DOI
10.1364/qels.2010.qtue5

Related papers

Semiconductor Devices Based on Two-Photon Emission

Alex Hayat, Pavel Ginzburg, Noam Kaminski +1 more

The first experimental observation of two-photon emission from semiconductors provides efficient compact room-temperature entangled photons sources for quantum information and spectroscopy, whereas the measured two-photon gain may lead to novel lasers emitting ultrashort optical pulses.

IEEE Lasers and Electro-Optics Society Annual Meeting (LEOS)•Oct 1, 2007•0 citations

Measurement of Optical Two-Photon Gain in Electrically Pumped AlGaAs at Room Temperature

Amir Nevet, Alex Hayat, Meir Orenstein

We demonstrate experimentally two-photon gain in semiconductor structures, shown previously only in dilute atomic systems. Two-photon gain is directly observed and characterized in electrically pumped room-temperature semiconductor devices, in good agreement with theory. The semiconductor structure was designed to enhance the two-photon interaction and reduce parasitic effects. The nonlinear two-photon amplification is studied directly by examining the current dependence of the optical intensity growth, and indirectly by monitoring the reduction in one-photon emission due to two-photon transitions above transparency.

Physical Review Letters•May 20, 2010•28 citations

Electrically induced two-photon transparency in semiconductors

Alex Hayat, Amir Nevet, Meir Orenstein

Two-photon emission (TPE) in semiconductors was recently observed, enabling possible realizations of efficient room temperature electrically-driven heralded single-photon sources, entanglement sources, two-photon amplifiers and lasers allowing ultra-short optical pulse generation based on the nonlinearity and the wide bandwidth of two-photon gain. Two-photon lasers (TPL) based on stimulated TPE have unique microscopic quantum properties such as squeezed state operation as well as macroscopic ones including threshold dependence on cavity photon number and bi-stability, while pushing further the modulation speed limit. Semiconductor high charge carrier concentrations, mature fabrication technology and the possibility for electrical control offer many advantages for the implementation of TPLs and two-photon amplifiers. The first step towards realizing of semiconductor two-photon amplifiers or TPLs is to achieve two-photon transparency (TPT) condition, which is reported here for the first time in semiconductors (or any solid state medium).

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2009•0 citations

Towards Hyperentanglement via Semiconductor Two- Photon Emission

Alex Hayat, Pavel Ginzburg, Pavel Gurevich +3 more

We investigate a new phenomenon of semiconductor two-photon emission presenting the first experiments. This allows implementation of compact highly-efficient room-temperature sources of entangled (for microcavity interband transitions) and hyperentangled (for intersubband transitions) photons.

Frontiers in Optics•Jan 1, 2008•0 citations

Towards Hyperentanglement via Semiconductor Two-Photon Emission

Alex Hayat, Pavel Ginzburg, David Neiman +2 more

A novel phenomenon of semiconductor two-photon emission is presented experimentally. Based on this effect, we propose implementations of compact highly-efficient room-temperature sources of entangled photons (inter-band transitions in a microcavity) and hyperentangled photons (inter-subband transitions).

International Conference on Quantum Information•Jan 1, 2008•0 citations

Two-photon based semiconductor entanglement-source for quantum communications

Alex Hayat, Pavel Ginzburg, Meir Orenstein

We propose a compact efficient room-temperature polarization-entangled photons source based on two-photon spontaneous emission from semiconductor quantum wells in a microcavity. Pair generation rate in GaInP/AlGaInP is O(103) higher than for PDC sources.

Quantum Electronics and Laser Science Conference•May 1, 2007•0 citations
We demonstrate experimentally two-photon gain in semiconductor structures, shown previously only in dilute atomic systems. Two-photon gain is directly observed and characterized in electrically pumped room-temperature semiconductor devices, in good agreement with theory. The semiconductor structure was designed to enhance the two-photon interaction and reduce parasitic effects. The nonlinear two-photon amplification is studied directly by examining the current dependence of the optical intensity growth, and indirectly by monitoring the reduction in one-photon emission due to two-photon transitions above transparency.
Two-photon emission (TPE) in semiconductors was recently observed, enabling possible realizations of efficient room temperature electrically-driven heralded single-photon sources, entanglement sources, two-photon amplifiers and lasers allowing ultra-short optical pulse generation based on the nonlinearity and the wide bandwidth of two-photon gain. Two-photon lasers (TPL) based on stimulated TPE have unique microscopic quantum properties such as squeezed state operation as well as macroscopic ones including threshold dependence on cavity photon number and bi-stability, while pushing further the modulation speed limit. Semiconductor high charge carrier concentrations, mature fabrication technology and the possibility for electrical control offer many advantages for the implementation of TPLs and two-photon amplifiers. The first step towards realizing of semiconductor two-photon amplifiers or TPLs is to achieve two-photon transparency (TPT) condition, which is reported here for the first time in semiconductors (or any solid state medium).