Teleporting Grin of a Quantum Chesire Cat without cat
Debmalya Das, Arun Kumar Pati

TL;DR
This paper proposes a novel quantum teleportation protocol that transfers a photon's polarization state without the photon itself being present, challenging traditional notions of quantum properties and entanglement.
Contribution
It introduces a disembodied teleportation method based on the Quantum Cheshire Cat phenomenon, enabling polarization transfer without the physical photon.
Findings
Successful teleportation of polarization without the photon
Demonstrates properties of quantum systems can be decoupled from physical particles
Raises questions about the nature of quantum properties and identity
Abstract
Quantum Chesire Cat is a counterintuitive phenomenon that provides a new window into the nature of the quantum systems in relation to multiple degrees of freedom associated with a single physical entity. Under suitable pre and postselections, a photon (the cat) can be decoupled from its circular polarization (its grin). In this paper, we explore whether the grin without the cat can be teleported to a distant location. This will be a totally disembodied teleportation protocol. Based on the original Quantum Chesire Cat setup, we design a protocol where the circular polarization is successfully teleported between two spatially separated parties even when the photon is not physically present with them. The process raises questions in our understanding about properties of quantum system. In particular it shows that question like ``whose polarization is it'' can prove to be vacuous in such…
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Taxonomy
TopicsQuantum Mechanics and Applications · Quantum Information and Cryptography · Quantum Computing Algorithms and Architecture
