Teleportation of Continuous Quantum Variables

Abstract

Quantum teleportation is analyzed for states of dynamical variables with continuous spectra, in contrast to previous work with discrete (spin) variables. The entanglement fidelity of the scheme is computed, including the roles of finite quantum correlation and nonideal detection efficiency. A protocol is presented for teleporting the wave function of a single mode of the electromagnetic field with high fidelity using squeezed-state entanglement and current experimental capability.[ S0031-9007(97)

Quantum channel of continuous variable teleportation and nonclassicality of quantum states

“…Quantum teleportation of continuous variables [3,4,5,6] between the sender, Alice, and the receiver, Bob, is performed by sharing a two-mode squeezed-vacuum state |Ψ AB…”

“…More practical scheme of the continuous variable teleportation has been proposed [3,4,5] in which a two-mode squeezed-vacuum state is employed as an entangled state. The first experiment was performed by using quantum optical fields [6].…”

Quantum probabilistic teleportation via entangled coherent states

“…Entanglement can exhibit the nature of a nonlocal correlation between quantum systems that have no classical interpretation. It has been noted [2,3] that quantum teleportation can be viewed as an achievable experimental technique to quantitatively investigate quantum entanglement. Several quantum teleportation schemes of both discrete and continuous variables have been proposed [2,3,6,7].…”

“…It has been noted [2,3] that quantum teleportation can be viewed as an achievable experimental technique to quantitatively investigate quantum entanglement. Several quantum teleportation schemes of both discrete and continuous variables have been proposed [2,3,6,7]. Continuous variable quantum teleportation of an unknown coherent states has been realized experimentally by employing a two-mode squeezed vacuum state as an entanglement resource [3].…”

“…Quantum entanglement plays an important role in various fields of quantum information, such as quantum computation [1], quantum teleportation [2,3], dense coding [4] and quantum communication [5], etc. Entanglement can exhibit the nature of a nonlocal correlation between quantum systems that have no classical interpretation.…”