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 language | English |
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Publication date | 2016 |
Number of pages | 1 |
Publication status | Published - 2016 |
Event | Wilhelm und Else Heraeus Seminar: Hybrid Systems for Quantum Optics - Bad Honnef , Germany Duration: 10 Jan 2016 → 13 Jan 2016 Conference number: 604 |
Seminar
Seminar | Wilhelm und Else Heraeus Seminar |
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Number | 604 |
Country/Territory | Germany |
City | Bad Honnef |
Period | 10/01/2016 → 13/01/2016 |