TY - CONF AU - Swann, William AU - Giorgetta, Fabrizio AU - Sinclair, Laura AU - Baumann, Esther AU - Coddington, Ian AU - Newbury, Nathan C2 - CLEO 2013, the Conference on Lasers and Electro-Optics, San Jose, CA DA - 2013-06-09 DO - https://doi.org/10.1364/CLEO_SI.2013.CM4N.4 LA - en PB - CLEO 2013, the Conference on Lasers and Electro-Optics, San Jose, CA PY - 2013 TI - Free-space optical time-frequency transfer over 2 km ER -