Experimental Quantum Cloning of Single Photons

@article{LamasLinares2002ExperimentalQC,
  title={Experimental Quantum Cloning of Single Photons},
  author={Antia Lamas-Linares and Christoph Simon and John C. Howell and Dirk Bouwmeester},
  journal={Science},
  year={2002},
  volume={296},
  pages={712 - 714}
}
Although perfect copying of unknown quantum systems is forbidden by the laws of quantum mechanics, approximate cloning is possible. A natural way of realizing quantum cloning of photons is by stimulated emission. In this context, the fundamental quantum limit to the quality of the clones is imposed by the unavoidable presence of spontaneous emission. In our experiment, a single input photon stimulates the emission of additional photons from a source on the basis of parametric down-conversion… 
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182 Citations
Background Citations
15
Methods Citations
3

182 Citations

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Applications of quantum cloning
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Realization Of Universal Quantum Cloning and of the Not Gate by Optical Parametric Amplification
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Optical realization of optimal symmetric real state quantum cloning machine
Experimental reversion of the optimal quantum cloning and flipping processes
The quantum cloner machine maps an unknown arbitrary input qubit into two optimal clones and one optimal flipped qubit. By combining linear and nonlinear optical methods we experimentally implement a…
Cavity QED scheme for realizing the optimal universal quantum cloning of the polarization state of photons
We propose a scheme to realize the optimal universal quantum cloning of the polarization state of the photons in context of a microwave cavity quantum electrodynamics. The scheme is based on the…
Cloning of single photon by high gain amplifier
In the last years the simultaneous realization of the optimal cloning and optimal flipping of an input qubit has been reported adopting a quantum injected optical parametric amplifier. The previous…
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PHOTONS CANNOT ALWAYS BE REPLICATED
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