The much-anticipated symposium started with planary talk by Dr. Harris. He started saying it has been wonderful 50 years and he would like to personalize that history.
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He mentioned his early optical talbe, which was made from a lathe:
He concluded by speaking about his achievement:
40 years ago I modulated many photons; 40 years later I modulate one photon.
Thank Prof. Andy Kung for providing me these pictures.