Efficient multiple-quantum transition processes in an n-qubit spin system
量子物理
2016-09-08 v2
摘要
The whole Hilbert state space of an n-qubit spin system can be divided into (n+1) state subspaces according to the angular momentum theory of quantum mechanics. Here it is shown that any unknown state in such a state subspace, whose dimensional size is proportional to either a polynomial or exponential function of the qubit number n, can be transferred efficiently into a larger subspace with a dimensional size generally proportional to an exponential function of the qubit number by the multiple-quantum unitary transformation with a subspace-selective multiple-quantum unitary operator. The efficient quantum circuits for the subspace-selective multiple-quantum unitary operators are really constructed.
引用
@article{arxiv.quant-ph/0411046,
title = {Efficient multiple-quantum transition processes in an n-qubit spin system},
author = {Xijia Miao},
journal= {arXiv preprint arXiv:quant-ph/0411046},
year = {2016}
}
备注
37 pages and no figure