Controlled quantum teleportation and secure direct communication

Gao, Ting; Yan, Femgli; Wang, Z X

doi:10.1088/1009-1963/14/5/006

Cited by 187 publications

(7 citation statements)

References 27 publications

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“…In the teleportation protocol proposed in the paper [23]. A sender, Alice, successfully transmits an unknown state of a two-level particle to a remote receiver, Bob.…”

Section: Related Workmentioning

confidence: 99%

Controlled Quantum Communication Using Quantum Random Walk

Das,

Meghanath,

et al. 2024

Preprint

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In this paper, we introduce a novel controlled quantum communication protocol utilizing a quantum random walk involving one sender, one receiver, and multiple controllers. Inspired by classical random walk theory, quantum random walk serves as the foundation of our proposed protocol. With this protocol, we demonstrate the ability to transfer any n- dimensional quantum state to any party facilitated by any m number of controllers. Furthermore, any of the (m+1) individuals has the freedom to accept the role of the receiver. Rigorous testing of the protocol’s performance is conducted through quantum state tomography. We have run different variations of the circuits in IBMQ QASM simulator. Additionally, we explore the effectiveness of a weak measurement-based protocol designed to mitigate amplitude-damping noise’s detrimental effects on quantum states. By analyzing fidelity versus amplitude damping noise-strength plots for scenarios with and without the weak measurement protocol, we provide valuable insights into its protective capabilities across various levels of noise. These find- ings illuminate the protocol’s potential applications in quantum information processing

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“…In the teleportation protocol proposed in the paper [23]. A sender, Alice, successfully transmits an unknown state of a two-level particle to a remote receiver, Bob.…”

Section: Related Workmentioning

confidence: 99%

Controlled Quantum Communication Using Quantum Random Walk

Das,

Meghanath,

et al. 2024

Preprint

View full text Add to dashboard Cite

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“…Subsequently, several theorists and experimenters have discussed, analysed and reported on this kind of quantum communication. For the later, Ting et al [13], proposed a controlled and secure quantum teleportation of a 2-level particle via an initially shared triplet of entangled particles under the control of the supervisor Charlie. Chen et al [14], suggested a quantum teleportation protocol between multiple senders and multiple receivers via only one supervisor Charlie, where the supervisor shares the entangled state with every sender, while there is no directly shared entanglement between sender and receiver.…”

Section: Introductionmentioning

confidence: 99%

Controlled quantum teleportation between discrete and continuous physical systems

Kirdi¹,

Slaoui²,

Ikken³

et al. 2023

Phys. Scr.

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Quantum teleportation of an unknown state basing on the interaction between discrete-valued states (DV) and continuous-valued states (CV) presented a particular challenge in quantum technologies. Here we consider the problem of controlled quantum teleportation of an amplitude-matched CV qubit, encoded by a coherent state of a varied phase as a superposition of the vacuum- and single-photon optical states among two distant partners Alice and Bob, with the consent of controller, Charlie. To achieve this task, we use an hybrid tripartite entangled state (interaction between the discrete and continuous variables states) as the quantum resource where the coherent part belongs to Alice, while the single-photon belongs to Bob and Charlie and the CV qubit is at the disposal of Alice. The discrete-continuous interaction is realized on highly transmissive beam-splitter. We have shown that the perfectly of teleportation fidelity depends on the phase difference between the phase of the state to teleport and the phase of the sender's mode, we found that for a difference which approaches 0 or $\pi$, near perfect controlled quantum teleportation can be obtained in terms of the fidelity and independently of the amplitude $\alpha$ and the squeezing parameter $\zeta$. Experimentally, this proposed scheme has been implemented using linear optical components such as beam splitter, phase shifters and photon counters.

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“…The essence here is that two different types of states are exchanged between the two parties. Controlled quantum communication protocols appeared in works by Liu et al [35], Gao et al [36], Zhang et al [37], Choudhury et al [38], etc. The role of the Controller is to oversee the protocol as a whole and, after getting satisfied, perform certain actions leading to the completion of the protocol.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric bi-directional teleportation scheme in the presence of a Mentor and a controller

2023

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In this paper a quantum communication protocol is proposed for the purpose of the exchange of a single qubit and a three-qubit state between two parties. It is a bi-directional teleportation protocol where the two parties have no information about the states they possess. The protocol has a Mentor who initiates the process and by measurement fixes the course of it amongst several possible alternatives. The participants are not initially connected through a single entangled state. It is the action of the Mentor which creates a seven-qubit entanglement amongst the legitimate parties. The role of the Mentor ends thereby. There is a Controller to oversee the process whose action leads to the completion of the protocol. The efficiency of the present protocol is calculated and it is found to be higher than several existing bi-directional protocols.

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Controlled quantum teleportation and secure direct communication

Cited by 187 publications

References 27 publications

Controlled Quantum Communication Using Quantum Random Walk

Controlled Quantum Communication Using Quantum Random Walk

Controlled quantum teleportation between discrete and continuous physical systems

Asymmetric bi-directional teleportation scheme in the presence of a Mentor and a controller

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