Probing ultra-fast dephasing via entangled photon pairs. Academic Article

abstract

• We demonstrate how the Hong-Ou-Mandel (HOM) interference with polarization-entangled photons can be used to probe ultrafast dephasing. We can infer the optical properties like the real and imaginary parts of the complex susceptibility of the medium from changes in the position and the shape of the HOM dip. From the shift of the HOM dip, we are able to measure 22 fs dephasing time using a continuous-wave (CW) laser even with optical loss > 97 %, while the HOM dip visibility is maintained at 92.3 % (which can be as high as 96.7 %). The experimental observations, which are explained in terms of a rigorous theoretical model, demonstrate the utility of HOM interference in probing ultrafast dephasing.

authors

• Agarwal, Girish

published proceedings

• Opt Express

author list (cited authors)

• Liu, X., Li, T., Wang, J., Kamble, M. R., Zheltikov, A. M., & Agarwal, G. S.

complete list of authors

• Liu, Xinghua||Li, Tian||Wang, Jiaxuan||Kamble, Mrunal R||Zheltikov, Aleksei M||Agarwal, Girish S

publisher

• Optica Publishing Group  Publisher

published in

• Optics Express  Journal

keywords

• 51 Physical Sciences
• 5102 Atomic, Molecular And Optical Physics

PubMed Central ID

• 36558674

Digital Object Identifier (DOI)

• 10.1364/OE.480300

start page

• 47463

end page

• 47474

volume

• 30

issue

• 26