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Quantum optics

Push-button photon entanglement


A source of entangled photons that emits one — and only one — pair of photons on demand has now been realized in a semiconductor chip. The solid-state source will be a useful resource for experiments in optical quantum information.

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Figure 1: A semiconductor recipe for high-quality photonic entanglement.


  1. Kwiat, P. G. et al. Phys. Rev. Lett. 75, 4337–4341 (1995).

    ADS  Article  Google Scholar 

  2. Aspect, A., Grangier, P. & Roger, G. Phys. Rev. Lett. 47, 460–463 (1981).

    ADS  Article  Google Scholar 

  3. Young, R. J. et al. New. J. Phys. 8, 29 (2006).

    ADS  Article  Google Scholar 

  4. Akopian, N. et al. Phys. Rev. Lett. 96, 130501 (2006).

    ADS  Article  Google Scholar 

  5. Pan, J.-W. et al. Rev. Mod. Phys. 84, 777–838 (2012).

    ADS  Article  Google Scholar 

  6. Müller, M., Bounouar, S., Jöns, K. D., Glässl, M & Michler, P. Nature Photon. 8, 224–228 10.1038/nphoton.2013.377(2014).

    ADS  Article  Google Scholar 

  7. Jayakumar, H. et al. Phys. Rev. Lett. 110, 135505 (2013).

    ADS  Article  Google Scholar 

  8. Vamivakas, A. N., Zhao, Y., Lu, C.-Y. & Atatüre, M. Nature Phys. 5, 198–202 (2009).

    ADS  Article  Google Scholar 

  9. Flagg, E. B. et al. Nature Phys. 5, 203–207 (2009).

    ADS  Article  Google Scholar 

  10. He, Y.-M. et al. Nature Nanotech. 8, 213–217 (2013).

    ADS  Article  Google Scholar 

  11. Lee, K. G. et al. Nature Photon. 5, 166–169 (2011).

    ADS  Article  Google Scholar 

  12. Dousse, A. et al. Nature 466, 217–220 (2010).

    ADS  Article  Google Scholar 

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Correspondence to Chao-Yang Lu or Jian-Wei Pan.

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Lu, CY., Pan, JW. Push-button photon entanglement. Nature Photon 8, 174–176 (2014).

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