Probing ultra-fast dephasing via entangled photon pairs
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 14, 2022
- Source ID
- 10.1364/oe.480300
Entities
People
- Aleksey Zheltikov
- G. S. Agarwal
- Jiaxuan Wang
- Mrunal R. Kamble
- Tian Li
- Xinghua Liu
Organizations
- Air Force Office of Scientific Research
- Robert A. Welch Foundation
- Texas A&M University
- University of Tennessee