Auffeves, A.

Claudon, J.

de Assis, P. L.

Fratini, F.

Gerard, J. M.

Gregersen, Niels

Nguyen, H. A.

Nogues, G.

Poizat, J. P.

Tumanov, D.

Online Research Database In Technology

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L.; Fratini, F.; Nogues, G.; Gregersen, Niels; Auffeves, A.;Claudon, J.; Gerard, J. M.; Poizat, J. P.Publication date:2014Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Nguyen, H. A., Tumanov, D., de Assis, P. L., Fratini, F., Nogues, G., Gregersen, N., ... Poizat, J. P. (2014).Resonant excitation of a quantum dot in a photonic wire. Poster session presented at Condensed Matter inParis, Paris, France.Resonant excitation of a quantum dot in a photonic wire   H.A. Nguyen1,  D. Tumanov1,   P.L.  de Assis1,2,  F. Fratini1,2,  G. Nogues1,   N. Gregersen3,  A. Auffèves1,  J. Claudon4,   J.M. Gérard4, J.P. Poizat1 1 Equipe « Nanophysique et semi-conducteurs », Institut Néel, CNRS, Université Grenoble Alpes, 2 Departamento de Fısica, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil 3 Department of Photonics Engineering, DTU Fotonik, Kongens Lyngby, Denmark 4 Equipe « Nanophysique et semi-conducteurs », INAC, CEA Grenoble,   In this poster, we will present our latest experimental results on resonant excitation of a single InAs quantum dot (QD) embedded in a GaAs photonic wire. The system is shown in fig. 1. The QD emits light at a wavelength  λ~900 nm. It has been shown to be a very efficient single photon source [1,2]. The wire is an almost perfect waveguide that can collect more than 90% of the photons emitted by the QD. A noteworthy property of these photonic wires is that this performance is maintained over a broadband of 20 nm around the central wavelength of 900 nm. As a consequence, any emitting transition within this range will benefit from this quasi one-dimensional photonic extraction.       Figure 1. Scanning electron microscope image of a trumpet like photonic wire. The quantum dots are located 1 µm above the basis of the wire.  It turns out that these devices can also be used the other way around to couple a propagating electromagnetic field to a single emitter with an optimal efficiency. In this situation, the probability for the single quantum object to absorb a photon fed into the structure is maximal. One can then take advantage of the strong non-linear behaviour of a two-level system to achieve giant non-linearity at the single photon level [3,4]. This has already been realized with a good efficiency using a resonant photonic structure to enhance the light matter interaction [5-7]. An interesting property of these photonic wires is that their large frequency bandwidth allows two different laser frequencies to be coupled with two different transitions of the quantum dot, while maintaining a very high coupling efficiency. This will enable two-mode nonlinearity at the single photon level in the optical domain, as was already achieved in one-dimensional circuit quantum electrodynamics [8].  We have already observed resonant signatures a single QD in a reflectivity experiment.  We will present our on-going work on this topic.   We thank E. Dupuy and N.S Malik for the sample fabrication, and  E. Wagner for technical support.   [1] J. Claudon et al, “A highly efficient single-photon source based on a quantum dot in a photonic nanowire “, Nat. Phot. 4, 174 (2010) [2]  M. Munsch et al, “Dielectric GaAs Antenna Ensuring an Efficient Broadband Coupling between an InAs Quantum Dot and a Gaussian Optical Beam”, Phys. Rev. Lett. 110, 177402 (2013).  [3] A. Högele, et al, “Voltage-Controlled Optics of a quantum dot “, Phys. Rev. Lett. 93, 217401 (2004). [4] A. Auffèves et al, “Giant optical nonlinearity induced by a single two-level system interacting with a cavity in the Purcell regime”, Phys. Rev. A 75, 053823 (2007)  [5] D. Englund et al, “Controlling cavity reflectivity with a single quantum dot », Nature 450, 857 (2007)  [6] M. T. Rakher et al, “Externally Mode-Matched Cavity Quantum Electrodynamics with Charge-Tunable Quantum Dots”, Phys. Rev. Lett.102, 097403 (2009)  [7] V. Loo et al, “Optical Nonlinearity for Few-Photon Pulses on a Quantum Dot-Pillar Cavity Device”, Phys. Rev. Lett. 109, 166806 (2012)  [8] A. A. Abdumalikov, Jr. et al,, “Electromagnetically Induced Transparency on a Single Artificial Atom”, Phys. Rev. Lett. 104, 193601 (2010)       

Resonant excitation of a quantum dot in a photonic wire

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Resonant excitation of a quantum dot in a photonic wire

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