The Oppenheimer approximation is the thing that makes teleportation difficult.

  The Oppenheimer approximation is the thing that makes teleportation difficult. 

Oppenheimer approximation means, that researchers must handle electrons and an atom's nucleus (or core) wave function separately. The reason for that is the different sizes of those components. 

Oppenheimer approximation means. That all particles and particle groups have different wave functions. And we can say this thing is an extension of the Oppenheimer approximation. Because, the particle's size, position, and distance from the energy source are different energy takes effect on particles at different times. Otherways saying: we cannot at the same time affect to all atoms' particles. 

That's why teleportation of the complex quantum structures is so difficult.  If we want to transport things like steel plates by using laser rays the thing that destroys complex quantum structures is the impact wave. That laser ray sends.  

The reason for the impact wave is that laser rays raise all particle's energy levels at the same moment. When laser rays hit the material it raises the first particle's energy level. Energy starts to flow to lower energy-level particles. And that causes shockwave which pushes particles forward.  That shockwave is the thing that destroys the structure. 

The idea of teleportation is that the system creates a structure that interacts like photons. The thing requires that the system denies interaction or energy flow between a structure and its environment. Or the system must replace lost energy with the new energy dose that is in the same level or higher energy level than it's environment. 

The image above portrays a metal atom cube. If researchers want to make a teleportation machine that teleports this kind of complex structure. They must raise the energy level in all particles at the same moment to a higher level. 

Then they must make sure that energy relations between atoms are the same. As they were before energy stress began. If the system sends energy stress to the shell, it forms a standing wave in the middle of the structure. That standing wave destroys the structure. If there is a hole through the metal cube where is shot the laser ray will transport extra energy away from the structure. 

This is why we can superposition photons and some other elementary particles. But we cannot teleport complex structures. The idea is that the laser forms an electromagnetic wormhole. Quantum particles look like stretched waves. 

If we want to make a teleportation machine that teleports something else than data between two superpositioned and entangled photons. That machine must raise the energy level of all particles precisely at the same moment in the structure. 

Then laser ray with the same energy level as the object must sent to it. If the energy level between the laser ray and the metal cube is precisely the same there should be no energy flow between that structure and the laser ray that transports those particles. 

The idea is that. The system pulls superstrings that form elementary particles straight. The quantum particle's form is the same as the warped or stretched waves. And that's why the teleportation system should pull it straight. 

And then. They will travel through the electromagnetic wormhole. When those particles are on the other side the wormhole that impact stretches them again. 

And the same time, keep the energy relations in the structure the same as they were before energy pumping started. If the system just sends energy stress to the outest atoms in a structure that forms a standing wave in it. And then that standing wave destroys the structure. 

That requires the possibility of sending radiation to all particles in the entirety at the same time. Or there must be a hole in the structure. And in that structure must be some kind of heat pump or laser ray. That travels through the structure. That thing denies standing waves in the structure. The standing wave pushes atoms of the structure away and breaks the entirety. 

https://bigthink.com/hard-science/quantum-particle/

https://bigthink.com/starts-with-a-bang/quantum-entanglement-weirder/

https://en.wikipedia.org/wiki/Born%E2%80%93Oppenheimer_approximation