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What can single photons do what lasers cannot do?

Research output: Contribution to journalArticleResearchpeer review

Authors

External Research Organisations

  • Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST)
  • Max Planck Institute for Solid State Research (MPI-FKF)
  • Paderborn University

Details

Original languageEnglish
Article number045008
Pages (from-to)1-7
Number of pages7
JournalQuantum Science and Technology
Volume4
Issue number4
Publication statusPublished - 24 Sept 2019
Externally publishedYes

Abstract

Coherence forms the foundation of quantum information processing and roots its bases in effects such as quantum interference and entanglement. In our classically perceived life, interference is a familiar notion, but what makes this phenomenon "quantum" is a challenging task to be quantitatively verified. In this contribution, we experimentally implement quantum interference and investigate the impact of different origins of an interference pattern by characterizing correlations obtained with distinct light sources, namely single photons and laser light. We present the correlation measurements on a general class of linear optical gates in a uniform format. Consequently, this modeling provides a precise characterization of different photonic sources. Specifically, we demonstrate how an interference pattern can be uniquely decomposed into a classical and quantum part. By extension, our approach renders it possible to perform a comprehensive analysis of the wave-particle duality in quantum-optical interference experiments.

Keywords

    Single photons, Quantum information processing, Quantum optics, quantum gate, single photons, Hong-Ou-Mandel, wave-particle duality, quantum photonics, single molecules

ASJC Scopus subject areas

Cite this

What can single photons do what lasers cannot do? / Rezai, Mohammad; Sperling, Jan; Gerhardt, Ilja.
In: Quantum Science and Technology, Vol. 4, No. 4, 045008, 24.09.2019, p. 1-7.

Research output: Contribution to journalArticleResearchpeer review

Rezai, M, Sperling, J & Gerhardt, I 2019, 'What can single photons do what lasers cannot do?', Quantum Science and Technology, vol. 4, no. 4, 045008, pp. 1-7. https://doi.org/10.1088/2058-9565/ab3d56
Rezai, M., Sperling, J., & Gerhardt, I. (2019). What can single photons do what lasers cannot do? Quantum Science and Technology, 4(4), 1-7. Article 045008. https://doi.org/10.1088/2058-9565/ab3d56
Rezai M, Sperling J, Gerhardt I. What can single photons do what lasers cannot do? Quantum Science and Technology. 2019 Sept 24;4(4):1-7. 045008. doi: 10.1088/2058-9565/ab3d56
Rezai, Mohammad ; Sperling, Jan ; Gerhardt, Ilja. / What can single photons do what lasers cannot do?. In: Quantum Science and Technology. 2019 ; Vol. 4, No. 4. pp. 1-7.
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