Teleportation of a two-particle four-component squeezed vacuum state by linear optical elements

Ye Liu, Jin Zhang, Guang‐Can Guo

Ho N. Phien, Nguyen Ba An

陈慧娜 Huina Chen, 刘金明 Jinming Liu

We present a linear optical scheme for achieving a unity fidelity teleportation of a two-particle fourcomponent squeezed vacuum state using two entangled squeezed vacuum states as quantum channel.The devices used are beam splitters and ideal photon detectors capable of distinguishing between odd and even photon numbers.Moreover, we also obtain the success probability of the teleportation scheme.

Akira Kitagawa, Katsuji Yamamoto

We examine various manipulations of photon number states which can be implemented by teleportation technique with number-sum measurement. The preparations of the Einstein-Podolsky-Rosen resources as well as the number-sum measurement resulting in projection to certain Bell state may be done conditionally with linear optical elements, i.e., beam splitters, phase shifters, and zero-one-photon detectors. Squeezed vacuum states are used as primary entanglement resource, while single-photon sources are not required.

Yuan Hong-Chun, 李恒梅, Qi Kai-Guo

We propose a simple experimental scheme in which an unknown two-qubit state is faithfully and deterministically teleported from Alice to Bob. The scheme is constructed with four photons from parametric down conversion, linear optical elements, and conventional photon detectors, all of which are available in current technology. It is shown that the probability of successful teleportation ideally reaches 100% based on single-photon two-qubit-assisted Bell-state measurement, which can distinguish all four Bell-states simultaneously via conventional photon detectors. By generalizing the scheme, the teleportation of an unknown multi-qubit system can also be realized.

Xin-Hua Cai, Le‐Man Kuang