April 2021 Research Round-up

The quantum networking field is moving quickly! Here, we gather and organize pre-prints from the last month to help researchers stay up to date on the latest work.

If we missed any notable quantum networking research from the past month, we'd welcome any contributions here: https://forms.gle/VPmhWPgWDnjBPCq88

All pre-prints listed below are freely available on arXiv.

Architecture:

• Optimal performance of global quantum networks

Entanglement

• The controlled SWAP test for determining quantum entanglement
• Bell nonlocality in networks

Multi-partite entanglement:

• Local and scalable detection of genuine multipartite single-photon path entanglement
• Computable and operationally meaningful multipartite entanglement measures
• Genuine multipartite nonlocality with causal-diagram postselection

Entanglement swapping

• Spectrally-resolved four-photon interference of time-frequency entangled photons

Integrated photonics

• High-speed tunable microcavities coupled to rare-earth quantum emitter

Photon sources

• Towards on-demand heralded single-photon sources via photon blockade

Quantum repeaters

• Quantum dot technology for quantum repeaters: from entangled photon generation towards the integration with quantum memories

Quantum teleportation

• Quantum state transfer between two photons with polarization and orbital angular momentum via quantum teleportation technology
• Optomechanical quantum teleportation
• Quantum teleportation is a reversal of quantum measurement

Space-based quantum communication

• Realizing quantum nodes in space for cost-effective, global quantum communication: in-orbit results and next steps

Secure communication

• Secure quantum secret sharing without signal disturbance monitoring
• Sharing classical secrets with continuous-variable entanglement: Composable security and network coding advantage

Transduction & Frequency conversion

• Photon pumping in a weakly-driven quantum cavity-spin system
• Ion-photonic frequency qubit correlations for quantum networks

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