Optimal Cloning of Coherent States with a Linear Amplifier and Beam Splitters

2000/12/11 by Samuel L. Braunstein, Nicolas J. Cerf, S. Iblisdir +3 · 6 citations
Computer Science · Physics and Astronomy · #Amplifier #Beam (structure) #Beam splitter #Biology #Cloning (programming) #Coherent states #Computer science #Genetics #Laser #Neural Networks and Reservoir Computing #Optics #Optoelectronics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum cloning #Quantum information #Quantum mechanics #Quantum network #Transformation (genetics) #quant-ph

paper · pdf · doi:10.1103/physrevlett.86.4938

published as Phys. Rev. Lett. 86, 4938 (2001) · 4 pages, 2 figures

arxiv created 2000/12/11 · openalex publication_date 2001/05/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A transformation achieving the optimal symmetric N-->M cloning of coherent states is presented. Its implementation requires only a phase-insensitive linear amplifier and a network of beam splitters. An experimental demonstration of this continuous-variable cloner should therefore be in the scope of current technology. The link between optimal quantum cloning and optimal amplification of quantum states is also pointed out.

Citations

• Optimal photon cloning
• Pauli Cloning of a Quantum Bit
• A single quantum cannot be cloned
• Multipartite Entanglement for Continuous Variables: A Quantum Teleportation Network
• Communication by EPR devices
• Quantum copying: Beyond the no-cloning theorem
• Quantum limits on noise in linear amplifiers

Cited by

• Universal Optical Amplification without Nonlinearity
• Efficient Classical Simulation of Optical Quantum Information Circuits
• Quantum cloning
• Three-mode entanglement by interlinked nonlinear interactions in optical χ^(2) media
• Experimental continuous-variable cloning of partial quantum information
• Trusted Noise in Continuous-Variable Quantum Key Distribution: A Threat and a Defense