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arXiv · 0911.1227

Experimental demonstration of optimal universal asymmetric quantum cloning of polarization states of single photons by partial symmetrization

Antonin Cernoch·Jan Soubusta·Lucie Celechovska·Miloslav Dusek·Jaromir Fiurasek
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Abstract

We report on experimental implementation of the optimal universal asymmetric 1->2 quantum cloning machine for qubits encoded into polarization states of single photons. Our linear optical machine performs asymmetric cloning by partially symmetrizing the input polarization state of signal photon and a blank copy idler photon prepared in a maximally mixed state. We show that the employed method of measurement of mean clone fidelities exhibits strong resilience to imperfect calibration of the relative efficiencies of single-photon detectors used in the experiment. Reliable characterization of the quantum cloner is thus possible even when precise detector calibration is difficult to achieve.

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Antonin Cernoch, Jan Soubusta, Lucie Celechovska, Miloslav Dusek, Jaromir Fiurasek. 2009-11-06. Experimental demonstration of optimal universal asymmetric quantum cloning of polarization states of single photons by partial symmetrization. https://doi.org/10.1103/physreva.80.062306

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