14 November 2017 Quantum state reconstruction and photon number statistics for low dimensional semiconductor opto-electronic devices
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Abstract
Quantum state tomography and the reconstruction of the photon number distribution are techniques to extract the properties of a light field from measurements of its mean and fluctuations. These techniques are particularly useful when dealing with macroscopic or mesoscopic systems, where a description limited to the second order autocorrelation soon becomes inadequate. In particular, the emission of nonclassical light is expected from mesoscopic quantum dot systems strongly coupled to a cavity or in systems with large optical nonlinearities. We analyze the emission of a quantum dot-semiconductor optical amplifier system by quantifying the modifications of a femtosecond laser pulse propagating through the device. Using a balanced detection scheme in a self-heterodyning setup, we achieve precise measurements of the quadrature components and their fluctuations at the quantum noise limit1. We resolve the photon number distribution and the thermal-to-coherent evolution in the photon statistics of the emission. The interferometric detection achieves a high sensitivity in the few photon limit. From our data, we can also reconstruct the second order autocorrelation function with higher precision and time resolution compared with classical Hanbury Brown-Twiss experiments.
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Fabian Böhm, Fabian Böhm, Nicolai B. Grosse, Nicolai B. Grosse, Mirco Kolarczik, Mirco Kolarczik, Bastian Herzog, Bastian Herzog, Alexander Achtstein, Alexander Achtstein, Nina Owschimikow, Nina Owschimikow, Ulrike Woggon, Ulrike Woggon, } "Quantum state reconstruction and photon number statistics for low dimensional semiconductor opto-electronic devices", Proc. SPIE 10359, Quantum Nanophotonics, 1035907 (14 November 2017); doi: 10.1117/12.2273855; https://doi.org/10.1117/12.2273855
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