Loading N-Dimensional Vector into Quantum Registers from Classical Memory with O(logN) Steps

Details Loading N-Dimensional Vector into Quantum Registers from Classical Memory with O(logN) Steps Loading N-Dimensional Vector into Quantum Registers from Classical Memory with O(logN) Steps

2006-12-08

arxiv.org/abs/quant-ph/0612061v3

Physics

Quantum Physics

8 papges 3 figures

Scientific paper

Vector is the general format of input data of most algorithms. Designing unitary operation to load all information of vector into quantum registers of quantum CPU from classical memory is called quantum loading scheme (QLS). QLS assembles classical memory and quantum CPU as a whole computer, which will be important for further quantum computation. We present a QLS based on path interference with time complexity O(logN), while classical loading scheme has time complexity O(N), that is the efficiency bottleneck of classical computer.

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