Ultra-low power all-optical switch using a single quantum dot embedded in a photonic wire

H.A. Nguyen, T. Grange, N.S. Malik, E. Dupuy, D. Tumanov, P. L. de Assis, I. Yeo, F. Fratini, N. Gregersen, A. Auffeves, J.M. Gerard, J. Claudon, Jean-Philippe Poizat

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Abstract

We present experimental results on two-mode optical giant non-linearity of a single InAs quantum dot (QD) embedded in a GaAs tapered photonic wire (fig. 1a). This system, in which the QD is efficiently coupled to a single guided mode, has been exploited to realize ultrabright single-photon sources [1,2]. We exploit here its broad operation bandwidth (>100 nm around 950 nm) to efficiently address two different transitions of the QD with two cw laser beams (fig. 1b). The laser coupled to the upper transition leads to a Rabi splitting of the intermediate state (Autler-Townes effect), affecting the resonant reflectivity of the laser coupled to the lower transition (see fig. 1c). By performing reflectivity experiment, we show that a coupling laser of 10 nW (50 photons per emitter lifetime) can modify the transmission of the probe laser, realizing an ultra-low power all-optical switch.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
Event9th International Conference on Quantum Dots - Jeju, Korea, Republic of
Duration: 22 May 201627 May 2016

Conference

Conference9th International Conference on Quantum Dots
CountryKorea, Republic of
CityJeju
Period22/05/201627/05/2016

Cite this

Nguyen, H. A., Grange, T., Malik, N. S., Dupuy, E., Tumanov, D., de Assis, P. L., Yeo, I., Fratini, F., Gregersen, N., Auffeves, A., Gerard, J. M., Claudon, J., & Poizat, J-P. (2016). Ultra-low power all-optical switch using a single quantum dot embedded in a photonic wire. Abstract from 9th International Conference on Quantum Dots, Jeju, Korea, Republic of.