@article{821, author = {Michael Gullans and Kristin Beck and Qian Lin and M Lukin and Vladan Vuletic and Wenlan Chen}, title = {Mutual Cross Modulation of Two Laser Beams at the Individual-Photon Level}, year = {2014}, month = {2014-09-12}, publisher = {Physical Review Letters}, doi = {https://doi.org/10.1103/PhysRevLett.113.113603}, language = {en}, }