Two-qubit Projective Measurements are Universal for Quantum Computation
量子物理
2007-05-23 v2
摘要
Nielsen [quant-ph/0108020] showed that universal quantum computation is possible given quantum memory and the ability to perform projective measurements on up to 4-qubits. We describe an improved method that requires only 2-qubit measurements, which are both sufficient and necessary. We present a method to partially collapse the -hierarchy in the indirect construction of unitary gates [Gottesman and Chuang, Nature, {\bf 402} 309 (1999)], and apply the method to find discrete universal sets of 2-qubit measurements.
引用
@article{arxiv.quant-ph/0111122,
title = {Two-qubit Projective Measurements are Universal for Quantum Computation},
author = {D. W. Leung},
journal= {arXiv preprint arXiv:quant-ph/0111122},
year = {2007}
}
备注
Results and discussed expanded, simple discrete universal sets of measurements presented