Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Bohai University

Controlled teleportation of quantum with continuous variables

Li Dong

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

Apart from the sender and receiver,a third participant is also involved in the teleportation of quantum state with continuous variables,in which the third participant acts as the controller.Thus,a network is obtained of teleportation of quantum sate with continuous variables,in which any user may send quantum state to others.

Related papers

Continuous Variable Tripartite Entanglement and a Teleportation Network

Takao Aoki

We experimentally generate a continuous variable tripartite entangled state and prove its full inseparability. By using this state, we develop a tripartite quantum teleportation network and perform teleportation of a coherent state with three different combinations of the sender, the receiver, and the controller.

AIP conference proceedings•Jan 1, 2004•0 citations

Continuous-variable multiparty quantum key agreement based on third party

Yi‐Hua Zhou, Jing Zhang, Wei‐Min Shi +2 more

General quantum key agreement (QKA) protocols require each participant to make the same contribution to the generation of a shared key, but this situation cannot meet the needs of government or military which require a third party only to control key agreement process. This paper proposed a continuous-variable quantum key agreement (CVQKA) protocol with multi-party Greenberg–Horne–Zeilinger (GHZ) entangled states generated by a third party. The third party prepares quantum states by sending multi-photon beam with higher emission frequency and stronger signal. Taking continuous variable as carrier, the information carried by each carrier increases, which improves the security key rate. In this paper, the third party controls but does not contribute to the final key. After receiving the states, each participant encodes his or her own key, adds a decoy state and sends it to the next participant, until receiving the quantum state that was encoded by all the participants. Then, participants can measure and calculate to get the final shared key. It shows that our protocol is easy to implement and has high efficiency. Security analysis shows that our protocol can resist collusion attacks, beam splitter attack, etc.

Modern Physics Letters B•Feb 3, 2020•10 citations

Quantum information transfer via various continuous variables

M.S. Kim, Jinhyoung Lee

Quantum teleportation is one of the important manifestations of quantum mechanics. We consider how quantum information is transferred via various entangled states of continuous variables including asymmetrically mixed Gaussian states and coherent entangled states.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)•Nov 13, 2002•0 citations

Demonstration of a quantum teleportation network for continuous variables

青木 隆朗

Nature•Jan 1, 2004•0 citations

Demonstration of a quantum teleportation network for continuous variables

Hidehiro Yonezawa, Takao Aoki, Akira Furusawa

Nature•Sep 1, 2004•357 citations

Quantum Switch for Continuous Variable Teleportation

Zhang, J, Xie, C, Peng, K

A novel quantum switch for continuous variables teleportation is proposed. Two pairs of EPR beams with identical frequency and constant phase relation are composed on two beamsplitters to produce two pairs of conditional entangled beams, two of which are sent to two sending stations(Alices) and others to two receiving stations(bobs). The EPR entanglement initionally results from two-mode quadrature squeezed state light. Converting the squeezed component of one of EPR sources between amplitude and phase, the input quantum state at a sender will be reproduced at two receivers in turn. The switching system manipulated by squeezed state light might be developed as a practical quantum switch device for the communication and teleportation of quantum information.

•May 16, 2001•7 citations
General quantum key agreement (QKA) protocols require each participant to make the same contribution to the generation of a shared key, but this situation cannot meet the needs of government or military which require a third party only to control key agreement process. This paper proposed a continuous-variable quantum key agreement (CVQKA) protocol with multi-party Greenberg–Horne–Zeilinger (GHZ) entangled states generated by a third party. The third party prepares quantum states by sending multi-photon beam with higher emission frequency and stronger signal. Taking continuous variable as carrier, the information carried by each carrier increases, which improves the security key rate. In this paper, the third party controls but does not contribute to the final key. After receiving the states, each participant encodes his or her own key, adds a decoy state and sends it to the next participant, until receiving the quantum state that was encoded by all the participants. Then, participants can measure and calculate to get the final shared key. It shows that our protocol is easy to implement and has high efficiency. Security analysis shows that our protocol can resist collusion attacks, beam splitter attack, etc.
A novel quantum switch for continuous variables teleportation is proposed. Two pairs of EPR beams with identical frequency and constant phase relation are composed on two beamsplitters to produce two pairs of conditional entangled beams, two of which are sent to two sending stations(Alices) and others to two receiving stations(bobs). The EPR entanglement initionally results from two-mode quadrature squeezed state light. Converting the squeezed component of one of EPR sources between amplitude and phase, the input quantum state at a sender will be reproduced at two receivers in turn. The switching system manipulated by squeezed state light might be developed as a practical quantum switch device for the communication and teleportation of quantum information.