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arXiv · 1205.4346

Erasing Quantum Distinguishability via Single-Mode Filtering

Monika Patel·Joseph B. Altepeter·Yu-Ping Huang·Neal N. Oza·Prem Kumar
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Abstract

Erasing quantum-mechanical distinguishability is of fundamental interest and also of practical importance, particularly in subject areas related to quantum information processing. We demonstrate a method applicable to optical systems in which single-mode filtering is used with only linear optical instruments to achieve quantum indistinguishability. Through "heralded" Hong-Ou-Mandel interference experiments we measure and quantify the improvement of indistinguishability between single photons generated via spontaneous four-wave mixing in optical fibers. The experimental results are in excellent agreement with predictions of a quantum-multimode theory we develop for such systems, without the need for any fitting parameter.

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Monika Patel, Joseph B. Altepeter, Yu-Ping Huang, Neal N. Oza, Prem Kumar. 2012-05-19. Erasing Quantum Distinguishability via Single-Mode Filtering. https://doi.org/10.1103/physreva.86.033809

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