Electromagnetically-induced-transparency-based cross-phase-modulation at attojoule levels

Hsiang Yu Lo, Yen Chun Chen, Po Ching Su, Hao Chung Chen, Jun Xian Chen, Ying Cheng Chen, Ite A. Yu, Yong Fan Chen

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


We report the experimental demonstration of electromagnetically-induced- transparency-based cross-phase-modulation at attojoule or, equivalently, few-hundred-photon levels. A phase shift of 0.005 rad of a probe pulse modulated by a signal pulse with an energy of ~100 aJ, equivalent to ~400 photons, was observed in a four-level system of cold Rb87 atoms.

Original languageEnglish
Article number041804
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
Publication statusPublished - 2011 Apr 22

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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