Teleportation with Embezzling Catalysts

• URL: http://arxiv.org/abs/2406.14386v1
• Date: Thu, 20 Jun 2024 15:02:20 GMT
• Title: Teleportation with Embezzling Catalysts
• Authors: Junjing Xing, Yuqi Li, Dengke Qu, Lei Xiao, Zhaobing Fan, Haitao Ma, Peng Xue, Kishor Bharti, Dax Enshan Koh, Yunlong Xiao,
• Abstract summary: We present teleportation protocols with embezzling catalyst that can achieve arbitrarily high fidelity. We show that some embezzling catalysts are universal, meaning that they can improve the teleportation fidelity for any pre-shared entanglement.
• Score: 10.65878656579232
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum teleportation is the process of transferring quantum information using classical communication and pre-shared entanglement. This process can benefit from the use of catalysts, which are ancillary entangled states that can enhance teleportation without being consumed. While chemical catalysts undergoing deactivation invariably exhibit inferior performance compared to those unaffected by deactivation, quantum catalysts, termed embezzling catalysts, that are subject to deactivation, may surprisingly outperform their non-deactivating counterparts. In this work, we present teleportation protocols with embezzling catalyst that can achieve arbitrarily high fidelity, namely the teleported state can be made arbitrarily close to the original state, with finite-dimensional embezzling catalysts. We show that some embezzling catalysts are universal, meaning that they can improve the teleportation fidelity for any pre-shared entanglement. We also explore methods to reduce the dimension of catalysts without increasing catalyst consumption, an essential step towards realizing quantum catalysis in practice.

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