And although part of the transfer happens instantaneously, the steps required to read out the teleported quantum state ensure that no information can be communicated faster than the speed of light.

 什麼叫“instantaneously” 呀 ？“instantaneously” 是怎麼證實的呀？

按我的理解，“instantaneously” 測試還涉及時鐘同步。怎麼做的？