There was reported that materialization of macroscopic objects may be possible, see here:

But now I want to know whether Quantum physics would allow such large materializations. It is clear, that due to the uncertainty relation between energy and time, particle-antiparticle pairs can be created in vacuum for a very very short time. Can vacuum fluctuation effects do materializations?

Recent Research states that energy can be transmitted from one Point to another entirely by vacuum fluctuations, see here:

Energy conservation requires that one Region must have negative energy densities (e.g. due to Casimir effect) to obtain positive energy densities at another Position. It is interesting for me whether some initial energy can be put into the Quantum vacuum to get this energy out from vacuum at another place.

May Quantum entanglement allow Major materializations?