QIS 3.0: Entanglement Distribution among Six Remote Quantum Nodes through Cold Atomic Ensembles and Photon Polarizations
Abstract
Computation and communication are two major foundations of modern information science and technology. While classical information technology has dramatically reshaped our society, the emerging quantum information technology could further revolutionize computing, communication, security, and sensing by utilizing the unique and powerful capabilities of quantum mechanics. In quantum information technology, entanglements distributed over multiple remote quantum nodes are crucial resources for quantum network, computation and sensing, but their implementation in realistic experimental environment has been extremely challenging. Despite significant experimental efforts, only a three-node quantum network of remote solid-state qubits based on entanglements among spin qubits and flying photons has been reported in 2021. The experimental difficulty roots in the drawbacks of current single photon presence-absence protocol, which prevent its use in scalable entanglement generation and distribution in a large quantum network. In this project, we propose a new approach to overcome these drawbacks based on cold atomic ensembles and their interaction with single photon polarization qubits and experimentally realize distributing quantum entanglement across a six-node quantum network. The proposed projects include the experimental realization of atom-photon and atom-atom entanglement, 3 tilde 6 nodes Greenberger-Horne-Zeilinger states, distributed quantum memory for multi-party entanglement, remote quantum gates, programmable any-to-any entanglement routing, as well as theoretical analysis of quantum advantages and limitations of such quantum networks. The realization of six interconnected remote quantum nodes not only provides a scalable platform for studying entanglement generation and control for quantum networks, but also opens the pathway for designing cloud quantum technologies with tailored applications in metrology, communications, computations, and imaging.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 20, 2024
- Accession Number
- AD1230828
Entities
People
- Chuanwei Zhang
- Shengwang Du
Organizations
- University of Texas at Dallas