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Observation of bosonic coalescence of photon pairs

Giovanni Di Giuseppe·Mete Atature·Matthew D. Shaw·Alexander V. Sergienko·Bahaa E. A. Saleh·Malvin C. Teich·Aaron J. Miller·Sae Woo Nam·John Martinis
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Abstract

Quantum theory predicts that two indistinguishable photons incident on a beam-splitter interferometer stick together as they exit the device (the pair emerges randomly from one port or the other). We use a special photon-number-resolving energy detector for a direct loophole-free observation of this quantum-interference phenomenon. Simultaneous measurements from two such detectors, one at each beam-splitter output port, confirm the absence of cross-coincidences.

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Giovanni Di Giuseppe, Mete Atature, Matthew D. Shaw, Alexander V. Sergienko, Bahaa E. A. Saleh, Malvin C. Teich, Aaron J. Miller, Sae Woo Nam, John Martinis. 2003-06-19. Observation of bosonic coalescence of photon pairs. https://doi.org/10.1103/physreva.68.063817

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