Title:	A physical perspective on classical cloning
Authors:	Reddy, Anirudh Samuel, J. Sinha, Supurna
Keywords:	No-cloning theorem Classical cloning maps Thermal noise Quantum Physics
Issue Date:	22-Sep-2019
Publisher:	Elsevier B.V
Citation:	Physics Letters A, 2019, Vol 383, p125846
Abstract:	The celebrated quantum no-cloning theorem states that an arbitrary quantum state cannot be cloned perfectly. This raises questions about cloning of classical states, which have also attracted attention. Here, we present a physical approach to the classical cloning process showing how cloning can be realised using Hamiltonians. After writing down a canonical transformation that clones classical states, we show how this can be implemented by Hamiltonian evolution. We then propose an experiment using the tools of nonlinear optics to realise the ideas presented here. Finally, to understand the cloning process in a more realistic context, we introduce statistical mechanical noise to the system and study how this affects the cloning process. While most of our work deals with linear systems and harmonic oscillators, we give some examples of cloning maps on manifolds and show that any system whose configuration space is a group manifold admits a cloning canonical transformation.
Description:	Restricted Access
URI:	http://hdl.handle.net/2289/7315
ISSN:	0375-9601
Alternative Location:	https://arxiv.org/abs/1810.12080 https://doi.org/10.1016/j.physleta.2019.125846 https://ui.adsabs.harvard.edu/abs/2019PhLA..38325846R/abstract
Copyright:	2019 Elsevier B.V.
Appears in Collections:	Research Papers (TP)

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