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We analyze the amount of information that can be sent through the traversablewormholes of Gao, Jafferis, and Wall. Although we find that the wormhole isopen for a proper time shorter than the Planck time, the transmission of asignal through the wormhole can sometimes remain within the semiclassicalregime. For black holes with horizons of order the AdS radius, informationcannot be reliably sent through the wormhole. However, black holes with horizonradius much larger than the AdS radius do allow for the transmission of anumber of quanta of order the horizon area in AdS units. More information canbe sent through the wormhole by increasing the number of light fieldscontributing to the negative energy. Our bulk computations agree with aboundary analysis based on quantum teleportation.

Traversable wormholes in AdS and bounds on information transfer