Experimental Quantum Cloning with Prior Partial Information

Abstract

When prior partial information about a state to be cloned is available, it can be cloned with a fidelity higher than that of universal quantum cloning. We experimentally verify this intriguing relationship between the cloning fidelity and the prior information by reporting the first experimental optimal quantum state-dependent cloning, using nuclear magnetic resonance techniques. Our experiments may further have important implications into many quantum information processing protocols.

4 pages, 2 figures

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Cited by in corpus (39)

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• Simulation of a Heisenberg XY- chain and realization of a perfect state transfer algorithm using liquid nuclear magnetic resonance
• Geometric phase with nonunitary evolution in presence of a quantum critical bath
• Experimental Realization of $1\to 2$ Asymmetric Phase-Covariant Quantum Cloning
• Teleportation of qubit states through dissipative channels: Conditions for surpassing the no-cloning limit
• Economical quantum cloning in any dimension
• Experimental phase-covariant cloning of polarization states of single photons
• Realization of the 1->3 optimal phase-covariant quantum cloning machine
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• Several experimental realizations of symmetric phase-covariant quantum cloner of single-photon qubits
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• Distribution of quantum Fisher information in asymmetric cloning machines
• Preparing pseudo-pure states with controlled-transfer gates
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• Defect production in nonequilibrium phase transitions: Experimental investigation of the Kibble-Zurek mechanism in a two-qubit quantum simulator
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• Quantum-phase synchronization
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• Sequential quantum cloning under real-life conditions
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