The method 13, wherein said Unet sequence of operations comprises {HEAD ~ a sequence} of {TAIL ~ elementary operations} on qubits 
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The method 13 , wherein said Unet sequence of operations comprises { HEAD ~ a sequence } of { TAIL ~ elementary operations } on qubits
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH