Enhancing quantum teleportation: an enable-based protocol exploiting distributed quantum gates

An asymmetric bidirectional quantum controlled teleportation via a seven-qubit Werner-like mixed state is proposed. In the process of teleportation preparation, it is hypothesized that three imperfections could appear, namely (i) imperfection of the entangler device that may result in a non-maximal entanglement of the channel, (ii) local noises are introduced during the channel preparation process, and (iii) global noises occur during the channel state distribution to the corresponding parties. The local and global noises are selected as depolarizing noise with certain probability of transforming any entangled state into a maximally mixed state, resulting in a seven-qubit Werner-like mixed state. The teleportation fidelity with the presence of the imperfections is evaluated. It is shown that the teleportation is more robust under the presence of global noise compared to local noise.

Section: Discussionmentioning

confidence: 99%

Asymmetric bidirectional quantum controlled teleportation via a seven-qubit Werner-like mixed state

Taufiqi,

Purwanto,

Yuwana

et al. 2024

“…Hence, the four-qubit, six-qubit, and eight-qubit channel states are the minimum number of qubits required to do a one-way, bidirectional, and cyclic teleportation with two controllers, respectively [1,8]. As a comparison, Ahmadkhaniha et al [53] proposed an alternative teleportation method, i.e., an enable-based bidirectional quantum teleportation protocol, leveraging distributed quantum gates with minimal resource requirements. They showed that by using their proposed method, the entangled state required as the quantum channel can be reduced to a more efficient number.…”

Section: Discussionmentioning

confidence: 99%

Quantum controlled teleportation with OR-logic-gate-like controllers in noisy environment

Taufiqi,

Yuwana,

Purwanto

et al. 2023

We evaluate a one-way, bidirectional, and cyclic quantum controlled teleportation with two controllers. We show that the controllers' agreement mimics the OR logic gate, i.e., the teleportation succeeds with only one of the controllers' cooperation, and it does not matter which one. This result is generalized to multi-ways quantum controlled teleportation with N controllers. The proposed protocols are evaluated by considering a noisy environment in the form of phase-damping noise and amplitude-damping noise and the dependence of fidelity only on the decoherence rate and the initial state’s amplitude parameter were established. It is interesting to note that for the phase-damping noise case, there are states with perfect fidelity (and the entropy equal to zero) even in a noisy environment. We discuss the novelty of the proposed protocols and highlight that they can be useful if the information to be teleported needs an OR-logic-gate-like controllers’ agreement combination, which cannot be done with other existing protocols.

“…One such protocol is Quantum Key Distribution (QKD), which detects eavesdropping attempts to ensure confidential information transmission [1]. Another protocol, quantum teleportation [2][3][4] enables the distant transfer of quantum states without physical particle transfer [5]. There are various protocols in this field, including quantum secret sharing [6], which fosters secure information distribution, and quantum superdense coding [7], which optimizes classical information transmission.…”

Section: Introductionmentioning

confidence: 99%

Quantum broadcasting of the generalized GHZ state: quantum noise analysis using quantum state tomography via IBMQ simulation

Mafi,

Kookani,

Aghababa

et al. 2024

Self Cite

This study focuses on the challenges posed by quantum noise to communication protocols, with a particular emphasis on the vulnerabilities of current quantum broadcast protocols. The research employs the generalized GHZ state, known for its multipartite entangled cluster state with real-value coefficients, as a diagnostic tool to understand and address the impact of quantum noise on transmitted information. Implementing two novel controlled quantum broadcast schemes on the IBM Quantum (IBMQ) Experience platform, using the Qiskit library and the QASM simulator, the investigation evaluates the effects of four different types of quantum noise through Kraus operator models. A notable aspect of the study is the pioneering use of quantum state tomography for a comprehensive analysis of quantum noise effects, providing novel insights into the resilience of quantum communication protocols.