Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer

• URL: http://arxiv.org/abs/2504.12942v1
• Date: Thu, 17 Apr 2025 13:42:47 GMT
• Title: Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer
• Authors: Lei Du, Xin Wang, Anton Frisk Kockum, Janine Splettstoesser,
• Abstract summary: We introduce the concept of giant superatoms (GSAs), where two or more interacting atoms are nonlocally coupled to a waveguide through one of them, and explore their unconventional quantum dynamics.<n>For braided GSAs, this setup enables decoherence-free transfer and swapping of their internal entangled states.<n>For separate GSAs, engineering coupling phases leads to state-dependent chiral emission, which enables selective, directional quantum information transfer.
• Score: 5.538877533376094
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We introduce the concept of giant superatoms (GSAs), where two or more interacting atoms are nonlocally coupled to a waveguide through one of them, and explore their unconventional quantum dynamics. For braided GSAs, this setup enables decoherence-free transfer and swapping of their internal entangled states. For separate GSAs, engineering coupling phases leads to state-dependent chiral emission, which enables selective, directional quantum information transfer. This mechanism further facilitates remote generation of W-class entangled states. Our results thereby open exciting possibilities for quantum networks and quantum information processing.

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