Generation and characterization of two-photon entanglement in the mid infrared

Adetunmise C. Dada,Taylor Shields,Shashi Prabhakar,Mehdi Ebrahim,Gregor G. Taylor,Dmitry Morozov,Kleanthis Erotokritou,Shigehito Miki,Masahiro Yabuno,Hirotaka Terai,Corin B. E. Gawith,Michael Kues,Lucia Caspani,Robert H. Hadfield,Matteo Clerici

Generation and characterization of two-photon entanglement in the mid infrared

2021

Adetunmise C. Dada
Taylor Shields
Shashi Prabhakar
Mehdi Ebrahim
Gregor G. Taylor
Dmitry Morozov
Kleanthis Erotokritou
Shigehito Miki
Masahiro Yabuno
Hirotaka Terai
Corin B. E. Gawith
Michael Kues
Lucia Caspani
Robert H. Hadfield
Matteo Clerici

We demonstrate two-photon interference and polarization entanglement at 2090 nm, constituting a crucial leap towards free-space mid-infrared quantum communication systems in a spectral region with high atmospheric transparency and reduced solar background.

Keywords:

Spontaneous parametric down-conversion
Quantum information science
Quantum entanglement
Quantum technology
Photonics
Optics
Nonlinear optics
Interference (wave propagation)
Physics
Quantum optics

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