A simpler criterion is presented to judge whether a W state can be taken as quantum channel forperfectly splitting or teleporting an arbitrary single-qubit state. If the W state is usable,the detailed manipulations in...A simpler criterion is presented to judge whether a W state can be taken as quantum channel forperfectly splitting or teleporting an arbitrary single-qubit state. If the W state is usable,the detailed manipulations in the two quantum information processes are amply shown. Moreover,some relevant discussions are made.展开更多
We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-ato...We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-atom state. In two schemes the large-detuning is chosen and the necessary time is designed to be much shorter than Rydberg-atom’s lifespan. Both schemes share the distinct advantage that cavity decay and atom decay can be neglected. As for the interaction manipulation, our preparation scheme is more feasible than a recent similar one. Compared with the Yeo and Chua’s scheme, our teleportation scheme has significantly reduced the measuring difficulty.展开更多
基金Supported by the Program for New Century Excellent Talents at the University of China (Grant No. NCET-06-0554)the National NaturalScience Foundation of China (Grant Nos. 10975001, 60677001, 10747146, and 10874122)+4 种基金the Science-Technology Fund of Anhui Province forOutstanding Youth (Grant No. 06042087)the Key Fund of the Ministry of Education of China (Grant No. 206063)the General Fundof the Educational Committee of Anhui Province (Grant No. 2006KJ260B)the Talent Foundation of Higher Education of Anhui Provincefor Outstanding Youth (Grant No. 2009SQRZ018)the Natural Science Foundation of Guangdong Province (Grant Nos. 06300345 and7007806)
文摘A simpler criterion is presented to judge whether a W state can be taken as quantum channel forperfectly splitting or teleporting an arbitrary single-qubit state. If the W state is usable,the detailed manipulations in the two quantum information processes are amply shown. Moreover,some relevant discussions are made.
基金supported by the program for New Century Excellent Talents at the University of China (Grant No. NCET-06-0554)the National Natural Science Foundation of China (Grant Nos. 10975001,60677001, 10747146 and 10874122)+3 种基金the Science and Technology Fund of Anhui Province for Outstanding Youth (Grant No. 06042087)the Talent Foundation of Higher Education of Anhui Province for Outstanding Youth(Grant No. 2009SQRZ018)the Science Research Foundation of Anhui University for Youth (Grant No. 2009QN017B)the Natural Science Foundation of Guangdong Province (Grant Nos. 06300345 and 7007806)
文摘We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-atom state. In two schemes the large-detuning is chosen and the necessary time is designed to be much shorter than Rydberg-atom’s lifespan. Both schemes share the distinct advantage that cavity decay and atom decay can be neglected. As for the interaction manipulation, our preparation scheme is more feasible than a recent similar one. Compared with the Yeo and Chua’s scheme, our teleportation scheme has significantly reduced the measuring difficulty.
