School of Electronic and Communication Engineering, Guiyang University, Guiyang, Guizhou 550005, China.
Sci Rep. 2017 Jan 9;7:40193. doi: 10.1038/srep40193.
The teleported quantum Fisher information of the phase parameter of atomic state is studied in consideration of vacuum fluctuations. Our results show that the teleported information is determined by the wavelength of the atoms as well as the distance of teleportation. When the wavelength of the atoms is much smaller than the teleportation distance, the teleported information decays with time and the decay rates are determined by the spontaneous emission rate of the atoms. However, when the wavelength of the atoms is much larger than the teleportation distance, the teleported information remains unchanged with time. The information of the phase parameter of atomic state has been absolutely transmitted.
研究了考虑真空涨落时原子态相位参数的量子Fisher 信息的传输。结果表明，传输信息由原子的波长以及传输距离决定。当原子的波长远小于传输距离时，传输信息随时间衰减，衰减速率由原子的自发辐射率决定。然而，当原子的波长远大于传输距离时，传输信息随时间保持不变。原子态相位参数的信息已被绝对传输。
