Abstract
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.
Highlights
Quantum teleportation, as a fascinating protocol predicted by quantum mechanics[1], plays important role in quantum communication and quantum computation networks[2,3]
The results show that causing by the interaction between vacuum fluctuations and the pair of atoms, the teleported quantum Fisher information (QFI) of parameter φ decreases with time and the decay rates depend on
We have studied the teleported QFI of phase parameter of atomic state by using two initially entangled static two-level atoms, which coupled to a bath of fluctuating vacuum scalar field in two different places
Summary
The teleported quantum Fisher information of the phase parameter of atomic state is studied in consideration of vacuum fluctuations. The interaction between vacuum fluctuations and a pair of quantum systems will cause the indirectly correlations of the two quantum systems as well as the decoherence behavior of each quantum system, brings complex effects to the entanglement of the quantum systems as well as the procedure of teleportation. In this regard, we use the two-level atoms, which are in interaction with vacuum fluctuations of scalar field, as the initially entangled systems to study how the vacuum fluctuations affect the procedure of teleportation. We will study the teleported QFI in consideration of vacuum fluctuations
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