Time-bin modulated polarization-entangled biphotons from cavity-enhanced down-conversion
量子物理
2009-11-13 v1
摘要
We have generated a new type of biphoton state by cavity-enhanced down-conversion in a type-II phase-matched, periodically-poled KTiOPO_4 (PPKTP) crystal. By introducing a weak intracavity birefringence, the polarization-entangled output was modulated between the singlet and triplet states according to the arrival-time difference of the signal and idler photons. This cavity-enhanced biphoton source is spectrally bright, yielding a single-mode fiber-coupled coincidence rate of 0.7 pairs/s per mW of pump power per MHz of down-conversion bandwidth. Its novel biphoton behavior may be utilized in sensitive measurements of weak intracavity birefringence.
引用
@article{arxiv.quant-ph/0605093,
title = {Time-bin modulated polarization-entangled biphotons from cavity-enhanced down-conversion},
author = {Christopher E. Kuklewicz and Franco N. C. Wong and Jeffrey H. Shapiro},
journal= {arXiv preprint arXiv:quant-ph/0605093},
year = {2009}
}
备注
4 pages, 5 figures