Einstein, Podolsky and Rosen introduced the concept of subatomic particle entanglement in 1935.
It was also A. Einstein who introduced the quantization of photon energy via his famous photoelectric effect equation which later in 1920 won the Noble Prize.
It was A. Einstein who inspired his brilliant student E. Shrodinger to introduce his famous S.E equation, considered the heart of QM quantum mechanics.
They both went to the Copenhagen conference in 1928 to explain their own interpretation of S.E. but they were shocked by the severe opposition of N. Bohr and W. Heisenberg as well as several of their iron guards.
Now the question arises: can we see Einstein as the adversary of QM or as its father?