article published C Lang author Deniz Bozyigit author Christopher Eichler author L. Steffen author Johannes M Fink author 4B591CBA-F248-11E8-B48F-1D18A9856A870000-0001-8112-028X Abdufarrukh Abdumalikov author Matthias Baur author Stefan Filipp author Marcus Da Silva author Alexandre Blais author Andreas Wallraff author Creating a train of single photons and monitoring its propagation and interaction is challenging in most physical systems, as photons generally interact very weakly with other systems. However, when confining microwave frequency photons in a transmission line resonator, effective photon-photon interactions can be mediated by qubits embedded in the resonator. Here, we observe the phenomenon of photon blockade through second-order correlation function measurements. The experiments clearly demonstrate antibunching in a continuously pumped source of single microwave photons measured by using microwave beam splitters, linear amplifiers, and quadrature amplitude detectors. We also investigate resonance fluorescence and Rayleigh scattering in Mollow-triplet-like spectra. American Physical Society2011 10.1103/PhysRevLett.106.243601 10624 yes Lang, C., et al. “Observation of Resonant Photon Blockade at Microwave Frequencies Using Correlation Function Measurements.” <i>Physical Review Letters</i>, vol. 106, no. 24, American Physical Society, 2011, doi:<a href="https://doi.org/10.1103/PhysRevLett.106.243601">10.1103/PhysRevLett.106.243601</a>. Lang, C., Bozyigit, D., Eichler, C., Steffen, L., Fink, J. M., Abdumalikov, A., … Wallraff, A. (2011). Observation of resonant photon blockade at microwave frequencies using correlation function measurements. <i>Physical Review Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.106.243601">https://doi.org/10.1103/PhysRevLett.106.243601</a> Lang C, Bozyigit D, Eichler C, Steffen L, Fink JM, Abdumalikov A, Baur M, Filipp S, Da Silva M, Blais A, Wallraff A. 2011. Observation of resonant photon blockade at microwave frequencies using correlation function measurements. Physical Review Letters. 106(24). Lang, C, Deniz Bozyigit, Christopher Eichler, L. Steffen, Johannes M Fink, Abdufarrukh Abdumalikov, Matthias Baur, et al. “Observation of Resonant Photon Blockade at Microwave Frequencies Using Correlation Function Measurements.” <i>Physical Review Letters</i>. American Physical Society, 2011. <a href="https://doi.org/10.1103/PhysRevLett.106.243601">https://doi.org/10.1103/PhysRevLett.106.243601</a>. C. Lang <i>et al.</i>, “Observation of resonant photon blockade at microwave frequencies using correlation function measurements,” <i>Physical Review Letters</i>, vol. 106, no. 24. American Physical Society, 2011. Lang C, Bozyigit D, Eichler C, et al. Observation of resonant photon blockade at microwave frequencies using correlation function measurements. <i>Physical Review Letters</i>. 2011;106(24). doi:<a href="https://doi.org/10.1103/PhysRevLett.106.243601">10.1103/PhysRevLett.106.243601</a> C. Lang, D. Bozyigit, C. Eichler, L. Steffen, J.M. Fink, A. Abdumalikov, M. Baur, S. Filipp, M. Da Silva, A. Blais, A. Wallraff, Physical Review Letters 106 (2011). 17782018-12-11T11:53:57Z2021-01-12T06:53:08Z