High-rate qutrit entanglement swapping with photon-number-basis

Abstract

Entanglement generation between distant nodes is a fundamental process in distributed quantum information processing. Qudits, high-dimensional quantum states, are promising candidates for enhancing entanglement distribution capabilities. However, the success probability of qudit entanglement distribution using Bell measurements is typically lower than that of conventional qubit-based protocols. In this paper, we propose a novel entanglement swapping protocol specifically designed for qutrits (three-dimensional quantum states). Our protocol employs photon-number encoding combined with an additional mode basis, such as polarization, effectively increasing the success probability. We show that the proposed qutrit protocol can achieve higher entanglement generation rates compared to conventional two-photon detection-based qubit protocols, especially under conditions of limited photon generation probability. Furthermore, we evaluate our protocol under realistic experimental imperfections, including photon loss and threshold detection, and show that it achieves high fidelity with probabilistic photon sources.

9 pagase, 5 figures

References in corpus (19)

• Quantum repeaters: From quantum networks to the quantum internet
• Modular Entanglement of Atomic Qubits using both Photons and Phonons
• Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
• Entangling single atoms over 33 km telecom fibre
• Entanglement of trapped-ion qubits separated by 230 meters
• Distributed quantum phase estimation with entangled photons
• Distributed quantum sensing with a mode-entangled network of spin-squeezed atomic states
• High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
• Quantum transport of high-dimensional spatial information with a nonlinear detector
• Implementation of quantum state tomography for time-bin qudits
• Surpassing the repeaterless bound with a photon-number encoded measurement-device-independent quantum key distribution protocol
• Rate-fidelity trade-off in cavity-based remote entanglement generation
• Efficient High-Dimensional Entangled State Analyzer with Linear Optics
• Simple loss-tolerant protocol for GHZ-state distribution in a quantum network
• Pre-detection squeezing as a resource for high-dimensional Bell-state measurements
• Heralding Higher-Dimensional Bell and Greenberger-Horne-Zeilinger States Using Multiport Splitters
• Quantum state estimation of multi-partite single photon path entanglement via local measurements
• Nonlinear protocol for high-dimensional quantum teleportation
• Linear-optical fusion boosted by high-dimensional entanglement