Share Email Print
cover

Proceedings Paper

Quantum-dot-based quantum devices (Conference Presentation)
Author(s): Lorenzo De Santis; Carlos A. Solanas; Niccolo Somaschi; Aristide Lemaitre; Isabelle Sagnes; Valerian Giesz; Loic Lanco; Pascale Senellart
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Semiconductor quantum dots (QDs) are promising artificial atoms for quantum information processing: they can generate single photons flying quantum bits; they show single photon sensitivity promising to develop quantum gates and the spin of a carrier in a QD can be a quantum memory. The scalability of a quantum network requires efficient interfaces between stationary and flying quantum bits. In the last few years, our group has made important progresses in this direction using cavity quantum electrodynamics. With a deterministic positioning of a single QD in a microcavity, we control the QD spontaneous emission on demand [1]. With such technique highly efficient single photon sources with brightness as large as 80% are demonstrated [2]. By minimizing the charge noise around the QD in a gated structure [3], we demonstrate the generation of fully indistinguishable photon. The source brightness is shown to exceed by one or two orders of magnitude the one of a parametric down-conversion source of same quality [4]. Symmetrically, these devices perform as excellent interfaces between a flying quantum bit and a stationary one, where coherent control of a quantum bit can be done when only few photons [5]. References [1] A. Dousse, et al. , Phys. Rev. Lett. 101, 267404 (2008) [2] O. Gazzano, et al. , Nature Communications 4, 1425 (2013) [3] A. Nowak. et al., Nature Communications 5, 3240 (2014) [4] N. Somaschi, et al. Nature Photonics 10.1038/nphoton.2016.23 (2016). [5] V. Giesz, et al., Nature Communications doi:10.1038/ncomms11986 (2016)

Paper Details

Date Published: 2 June 2017
PDF: 1 pages
Proc. SPIE 10118, Advances in Photonics of Quantum Computing, Memory, and Communication X, 101180U (2 June 2017); doi: 10.1117/12.2252749
Show Author Affiliations
Lorenzo De Santis, Ctr. National de la Recherche Scientifique (France)
Carlos A. Solanas, Ctr. National de la Recherche Scientifique (France)
Niccolo Somaschi, Ctr. National de la Recherche Scientifique (France)
Aristide Lemaitre, Lab. de Photonique et de Nanostructures (France)
Isabelle Sagnes, Lab. de Photonique et de Nanostructures (France)
Valerian Giesz, Lab. de Photonique et de Nanostructures (France)
Loic Lanco, Lab. de Photonique et de Nanostructures (France)
Pascale Senellart, Lab. de Photonique et de Nanostructures (France)


Published in SPIE Proceedings Vol. 10118:
Advances in Photonics of Quantum Computing, Memory, and Communication X
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Alan L. Migdall, Editor(s)

© SPIE. Terms of Use
Back to Top