ABSTRACT In this research, we explore a novel hybrid channel architecture for preserving entanglement, specifically tailored for quantum communication applications. Our design incorporates a coupled multifluxonium system, consisting of two fluxonium qubits interconnected through capacitive coupling, considering the intricate dynamics of quantum properties. The hybrid channel exhibits a unique composition, featuring both thermal and local components, which dynamically evolve over time. To evaluate its performance, we employ a comprehensive set of metrics, including quantum statistical speeds (quantum Fisher information and Hilbert–Schmidt speed), fidelity, average fidelity, relative entropy of entanglement, Bures distance, and Von Neumann entropy. These measures provide a thorough understanding of the channel's effectiveness in transmitting quantum states. Our findings reveal that this hybrid channel achieves maximum entanglement and mixedness of the states, showcasing its exceptional capability for successful quantum state transmission. This breakthrough holds immense potential for advancing quantum communication and computing technologies. This study contributes to the development of robust quantum information processing systems, paving the way for future advancements in the field. We also describe a practical implementation of quantum teleportation based on the current channel via quantum state tomography.
ABSTRACT In this research, we explore a novel hybrid channel architecture for preserving entanglement, specifically tailored for quantum communication applications. Our design incorporates a coupled multifluxonium system, consisting of two fluxonium qubits interconnected through capacitive coupling, considering the intricate dynamics of quantum properties. The hybrid channel exhibits a unique composition, featuring both thermal and local components, which dynamically evolve over time. To evaluate its performance, we employ a comprehensive set of metrics, including quantum statistical speeds (quantum Fisher information and Hilbert–Schmidt speed), fidelity, average fidelity, relative entropy of entanglement, Bures distance, and Von Neumann entropy. These measures provide a thorough understanding of the channel's effectiveness in transmitting quantum states. Our findings reveal that this hybrid channel achieves maximum entanglement and mixedness of the states, showcasing its exceptional capability for successful quantum state transmission. This breakthrough holds immense potential for advancing quantum communication and computing technologies. This study contributes to the development of robust quantum information processing systems, paving the way for future advancements in the field. We also describe a practical implementation of quantum teleportation based on the current channel via quantum state tomography.
Quantum teleportation enables the transfer of quantum states across any distance and plays a prominent role in quantum communication. In this paper, we theoretically investigate the feasibility of quantum two-qubit teleportation through a hybrid channel consisting of thermal, magnetic, and local components. To study this process, we check the success probability of quantum teleportation and address the quality of the teleported quantum state using fidelity and average fidelity concepts. Furthermore, we examine a crucial quantum aspect of the system, such as the non-Markovianity of the dynamics, by utilizing success probability witness related to the teleported state. Our findings show that this hybrid channel has a good potential to be successful in quantum teleportation.
Abstract This paper proposes a hybrid bidirectional quantum communication protocol, in which two parties simultaneously transmit two-qubit states: one via quantum teleportation (QT) and the other via remote state preparation (RSP). This approach establishes a more flexible model for bidirectional quantum communication. The protocol utilizes a specially designed maximally entangled quantum channel to enable hybrid bidirectional communication. By performing Bell measurements, joint projective measurements, and corresponding unitary operations, quantum teleportation from Alice to Bob and remote state preparation from Bob to Alice can be accomplished synchronously. Furthermore, the robustness of the proposed protocol is evaluated under three typical noisy environments, namely the amplitude damping (AD) channel, phase damping(PD) channel and the depolarizing (DP) channel. The proposed protocol provides a novel framework for effcient bidirectional quantum communication, with potential advantages in enhancing interactivity and optimizing resource utilization in future quantum networks.
Abstract In this paper, we present a theoretical framework for bidirectional quantum teleportation through pulsed two-qubit entangled channels. The protocol enables simultaneous reciprocal state exchange between spatially separated parties via deterministic quantum circuit operations on a ten-qubit system. We derive the complete time-evolved density matrix for independently pulsed qubits using Heisenberg picture dynamics, characterizing the quantum channel through correlation matrix formalism. Protocol success requires three synergistic conditions: maximal initial entanglement, symmetric pulse application to both channel qubits, and antipodal Bloch sphere initialization. Comprehensive analysis of fidelity and quantum Fisher information reveals that symmetric strong pulsing combined with appropriately structured correlations achieves near-unit fidelity and maximal parameter estimation precision across extensive parameter ranges. This optimal configuration exhibits remarkable robustness against pulse timing uncertainties and state preparation errors, essential attributes for experimental implementations. The quantum Fisher information analysis establishes that pulsed channels preserve both quantum states and parametric information, enabling applications in distributed quantum metrology. Our results demonstrate that engineered pulsed dynamics generate robust bidirectional communication channels, providing optimization principles for practical quantum networks.
Effective information transmission is a central element in quantum information protocols, but the quest for optimal efficiency in channels with symmetrical characteristics remains a prominent challenge in quantum information science. In light of this challenge, we introduce a hybrid channel that encompasses thermal, magnetic, and local components, each simultaneously endowed with characteristics that enhance and diminish quantum correlations. To investigate the symmetry of this hybrid channel, we explored the quantum correlations of a simple two-qubit Heisenberg spin state, quantified using measures such as negativity, ℓ1-norm coherence, entropic uncertainty, and entropy functions. Our findings revealed that the hybrid channel can be adeptly tailored to preserve quantum correlations, surpassing the capabilities of its individual components. We also identified optimal parameterizations to attain maximum entanglement from mixed entangled/separable states, even in the presence of local dephasing. Notably, various parameters and quantum features, including non-Markovianity, exhibited distinct behaviors in the context of this hybrid channel. Ultimately, we discuss potential experimental applications of this configuration.
With the advent of quantum technology, the exploration of quantum teleportation has become increasingly important, and it has provided a glimpse of the potential of quantum information science. The current research delves into the background of quantum teleportation, emphasizing its key role in advancing quantum communication and computation. Implications of this research are that it has the potential to revolutionize data transmission and processing, providing a secure and efficient means of exchanging quantum information. This paper is structured to provide a comprehensive study of quantum teleportation, starting with a literature review that lays the foundation for our work. Afterward, the details of our research are presented, including the theoretical framework and the proposed methodology for realizing the quantum teleportation protocol. We provide a careful overview of the technical details, demonstrating the complexity of quantum state preparation, entanglement distribution, and Bell state measurements. Our empirical section demonstrates the practical application of these protocols, providing empirical evidence of successful teleportation of quantum states. The theoretical predictions are confirmed by the experimental results, which validate the feasibility and reliability of our approach. Conclusions drawn from the experiments emphasize the robustness of quantum teleportation as a viable technology for future quantum networks.
With the advent of quantum technology, the exploration of quantum teleportation has become increasingly important, and it has provided a glimpse of the potential of quantum information science. The current research delves into the background of quantum teleportation, emphasizing its key role in advancing quantum communication and computation. Implications of this research are that it has the potential to revolutionize data transmission and processing, providing a secure and efficient means of exchanging quantum information. This paper is structured to provide a comprehensive study of quantum teleportation, starting with a literature review that lays the foundation for our work. Afterward, the details of our research are presented, including the theoretical framework and the proposed methodology for realizing the quantum teleportation protocol. We provide a careful overview of the technical details, demonstrating the complexity of quantum state preparation, entanglement distribution, and Bell state measurements. Our empirical section demonstrates the practical application of these protocols, providing empirical evidence of successful teleportation of quantum states. The theoretical predictions are confirmed by the experimental results, which validate the feasibility and reliability of our approach. Conclusions drawn from the experiments emphasize the robustness of quantum teleportation as a viable technology for future quantum networks.