Promises of quantum informatics in the context of comparison with spatial-temporal holography based on persistent spectral hole burning

It is common to compare what is promised by quantum informatics with what is achieved by classical (usual) digital electronic computers. This comparison shows great advantages of quantum informatics. The paper presents a comparison with optical holography based on persistent hole burning. It is shown that the distributed recording, parallel processing, correction of mistakes, associative memory, time arrow, time reversal, time lens, and ultrafast time shutter are already reliable realized by this method. The problem of conserving the state phase during the entire cycle of recording, storage, and extraction of information, which is a fundamental challenge for quantum informatics, is elegantly solved in the spatial-temporal holography. The conservation of phase memory is required only during recording. Theoretical studies and experiments aimed at the development of quantum informatics can give a deeper knowledge of the quantum theory, irrespective of whether practical results will be obtained or not. It is hoped that this, in turn, will refine the understanding of causality and fundamental problems of natural sciences and philosophy.