Continuous-Variable Quantum Cloning of Coherent states with Phase-Conjugate Input Modes Using Linear Optics

Abstract

We propose a scheme for continuous-variable quantum cloning of coherent states with phase-conjugate input modes using linear optics. The quantum cloning machine yields $M$ identical optimal clones from $N$ replicas of a coherent state and $N$ its replicas of phase conjugate. This scheme can be straightforwardly implemented with the setup accessible at present since its optical implementation only employs simple linear optical elements and homodyne detection. Compared with the original scheme for continuous variables quantum cloning with phase-conjugate input modes proposed by Cerf and Iblisdir [Phys. Rev. Lett. 87, 247903 (2001)], which utilized a nondegenerate optical parametric amplifier, our scheme loses the output of phase-conjugate clones and is regarded as irreversible quantum cloning.

6 pages, 3 figures. appear in Phys. Rev. A

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Cited by in corpus (10)

• Gaussian Quantum Information
• Quantum Cloning Machines and the Applications
• Experimental Demonstration of Continuous Variable Cloning with Phase-Conjugate Inputs
• Continuous-Variable Telecloning with Phase-Conjugate Inputs
• Broadcasting of continuous variable entanglement
• Two-mode excited entangled coherent states and their entanglement properties
• Nonlocal correlations for manifold quantum systems: Entanglement of two-spin states
• D-concurrence bounds for pair coherent states
• Nonlocal Nondegenerate Optical Parametric Amplifier Based on Genuine Multipartite Entanglement
• Nonclassical resource for continuous variable telecloning with non-Gaussian advantage