All-Optical Fiber Hanbury Brown & Twiss Interferometer to study 1300 nm single photon emission of a metamorphic InAs Quantum Dot

[EN] New optical fiber based spectroscopic tools open the possibility to develop more robust and efficient characterization experiments. Spectral filtering and light reflection have been used to produce compact and versatile fiber based optical cavities and sensors. Moreover, these technologies would be also suitable to study N-photon correlations, where high collection efficiency and frequency tunability is desirable. We demonstrated single photon emission of a single quantum dot emitting at 1300 nm, using a Fiber Bragg Grating for wavelength filtering and InGaAs Avalanche Photodiodes operated in Geiger mode for single photon detection. As we do not observe any significant fine structure splitting for the neutral exciton transition within our spectral resolution (46 mu eV), metamorphic QD single photon emission studied with our all-fiber Hanbury Brown & Twiss interferometer could lead to a more efficient analysis of entangled photon sources at telecom wavelength. This all-optical fiber scheme opens the door to new first and second order interferometers to study photon indistinguishability, entangled photon and photon cross correlation in the more interesting telecom wavelengths.G Munoz-Matutano thanks the Spanish Juan de la Cierva program (JCI-2011-10686). We acknowledge the support of the Spanish MINECO through projects TEC2014-53727-C2-1-R & TEC2014-60378-C2-1-R, the Research Excellency Award Program GVA PROMETEO 2013/012 PROMETEOII/2014/059 and the Explora Ciencia Tecnologia TEC2013-50552-EXP MULTIFUN project, and the Nanoscale Quantum Optics MPNS COST Action MP1403.Muñoz Matutano, G.; Barrera Vilar, D.; Fernandez-Pousa, CR.; Chulia-Jordan, R.; Seravalli. L.; Trevisi, G.; Frigeri, P.... (2016). All-Optical Fiber Hanbury Brown & Twiss Interferometer to study 1300 nm single photon emission of a metamorphic InAs Quantum Dot. Scientific Reports. 6(2721):1-9. https://doi.org/10.1038/srep27214S1962721Walmsley, I. A. Quantum optics: Science and technology in a new light. Science 348, 525–530 (2015).Eisaman, M. D., Fan, J., Migdall, A. & Polyakov, S. Invited review article: single-photon sources and detectors. Rev. Sci. Instrum. 82, 071101 (2011).Lu, C.-L. & Pan, J.-W. Push-button photon entanglement. Nat. Photonics 8, 174–176 (2014).Benson, O., Santori, C., Pelton, M. & Yamamoto, Y. Regulated and entangled photons from a single quantum dot. Phys. Rev. Lett. 84, 2513–2516 (2000).Yuan, Z. et al. Electrically driven single-photon source. Science 295, 102–105 (2002).Salter, C. L. et al. An entangled-light-emitting diode. Nature 465, 594–597 (2010).Brunner, D. et al. A coherent single-hole spin in a semiconductor. Science 325, 70–72 (2009).Müller, M., Bounouar, S., Jöns, K. D., Glässl, M. & Michler, P. On-demand generation of indistinguishable polarization-entangled photon pairs. Nat. Photonics 8, 234–238 (2014).Seguin, R. et al. Size-dependent fine-structure splitting in self-organized InAs/GaAs quantum dots. Phys. Rev. Lett. 95, 257402 (2005).Hadfield, R. H. Single-photon detectors for optical quantum information applications. Nat. Photonics 3, 696–705 (2009).Zinoni, C. et al. Time-resolved and antibunching experiments on single quantum dots at 1300nm. Appl. Phys. Lett. 88, 131102 (2006).Liu, X. et al. Single-photon emission in telecommunication band from an InAs quantum dot grown on InP with molecular-beam epitaxy. Appl. Phys. Lett. 103, 061114 (2013).Benyoucef, M., Yacob, M., Reithmaier, J. P., Kettler, J. & Michler, P. Telecom-wavelength (1.5 μm) single-photon emission from InP-based quantum dots. Appl. Phys. Lett. 103, 162101 (2013).Ward, M. et al. Coherent dynamics of a telecom-wavelength entangled photon source. Nat. Commun. 5, 3316 (2014).Rakher, M. T. et al. Quantum transduction of telecommunications-band single photons from a quantum dot by frequency upconversion. Nat. Photonics 4, 786–791 (2010).Muñoz-Matutano, G. et al. Time resolved emission at 1.3 μm of a single InAs quantum dot by using a tunable fibre Bragg grating. Nanotechnology 25, 035204 (2014).Ediger, M. et al. Peculiar many-body effects revealed in the spectroscopy of highly charged quantum dots. Nature Phys. 3, 774–779 (2007).Gerardot, B. D. et al. Laser spectroscopy of individual quantum dots charged with a single hole. Appl. Phys. Lett. 99, 243112 (2011).Gomis-Bresco, J. et al. Random population model to explain the recombination dynamics in single InAs/GaAs quantum dots under selective optical pumping. New J. Phys. 13, 023022 (2011).Ediger, M. et al. Fine structure of negatively and positively charged excitons in semiconductor quantum dots: electron-hole asymmetry. Phys. Rev. Lett. 98, 036808 (2007).Warming, T. et al. Hole-hole and electron-hole exchange interactions in single InAs/GaAs quantum dots. Phys. Rev. B 79, 125316 (2009).Benny, Y. et al. Excitation spectroscopy of single quantum dots at tunable positive, neutral and negative charge states. Phys. Rev. B 86, 085306 (2012).Muñoz-Matutano, G. et al. Selective optical pumping of charged excitons in unintentionally doped InAs quantum dots. Nanotechnology 19, 145711 (2008).Ha, N. et al. Size-dependent line broadening in the emission spectra of single GaAs quantum dots: Impact of surface charge on spectral diffusion. Phys. Rev. B 92, 075306 (2015).Moskalenko, E. S. et al. Influence of excitation energy on charged exciton formation in self-assembled InAs single quantum dots. Phys. Rev. B 64, 085302 (2001).Rivas, D. et al. Two-color single-photon emission from InAs quantum dots: toward logic information management using quantum light. Nano Lett. 14, 456–463 (2014).Dekel, E. et al. Cascade evolution and radiative recombination of quantum dot multiexcitons studied by time-resolved spectroscopy. Phys. Rev. B 62, 11038 (2000).Wimmer, M., Nair, S. & Shumway, J. Biexciton recombination rates in self-assembled quantum dots. Phys. Rev. B 73, 165305 (2006).Dalgarno, P. A. et al. Coulomb interactions in single charged self-assembled quantum dots: Radiative lifetime and recombination energy. Phys. Rev. B 77, 245311 (2008).Muñoz-Matutano, G. et al. Exciton, biexciton and trion recombination dynamics in a single quantum dot under selective optical pumping. Physica E 40, 2100–2103 (2008).Birkedal, D., Leosson, K. & Hvam, J. M. Long lived coherence in self-assembled quantum dots. Phys. Rev. Lett. 87, 227401 (2001).Tartakovskii, A. et al. Effect of thermal annealing and strain engineering on the fine structure of quantum dot excitons. Phys. Rev. B 70, 193303 (2004).Goldmann, E., Barthel, S., Florian, M., Schuh, K. & Jahnke, F. Excitonic fine-structure splitting in telecom-wavelength InAs/GaAs quantum dots: statistical distribution and height-dependence. Appl. Phys. Lett. 103, 242102 (2004).Seravalli, L., Trevisi, G. & Frigeri, P. 2D–3D growth transition in metamorphic InAs/InGaAs quantum dots. Cryst. Eng. Comm. 14, 1155–1160 (2012).Akimov, I., Kavokin, K., Hundt, A. & Henneberger, F. Electron-hole exchange interaction in a negatively charged quantum dot. Phys. Rev. B 71, 075326 (2005).Brouri, R., Beveratos, A., Poizat, J. & Grangier, P. Photon antibunching in the fluorescence of individual color centers in diamond. Opt. Lett. 25, 1294–1296 (2000).Mandel, L. & Wolf, E. Optical Coherence and Quantum Optics. Cambridge University Press (1995).Seravalli, L., Frigeri, P., Trevisi, G. & Franchi, S. 1.59 μm room temperature emission from metamorphic InAs∕InGaAsInAs∕InGaAs quantum dots grown on GaAs substrates. Appl. Phys. Lett. 92, 213104 (2008).Gonzalez-Tudela, A., Laussy, F. P., Tejedor, C., Hartmann, M. J. & del Valle, E. Two-photon spectra of quantum emitters. New J. Phys. 15, 033036 (2013).Peiris, M. et al. Two-color photon correlations of the light scattered by a quantum dot. Phys. Rev. B 91, 195125 (2015).Venghaus, L. Wavelength Filters in Fibre Optics. Springer Series in Optical Sciences Vol 123 (2006).Seravalli, L. et al. Single quantum dot emission at telecom wavelengths from metamorphic InAs/InGaAs nanostructures grown on GaAs substrates. Appl. Phys. Lett. 98, 173112 (2011).Seravalli, L. et al. Quantum dot strain engineering of InAs∕InGaAsInAs∕InGaAs nanostructures. J. Appl. Phys. 101, 024313 (2007).Seravalli, L., Trevisi, G. & Frigeri, P. Design and growth of metamorphic InAs/InGaAs quantum dots for single photon emission in the telecom window. Crys. Eng. Comm. 14, 6833–6838 (2012).Seravalli, L., Frigeri, P., Nasi, L., Trevisi, G. & Bocchi, C. Metamorphic quantum dots: quite different nanostructures. J. Appl. Phys. 108, 064324 (2010)

Parallel Recording of Single Quantum Dot Optical Emission Using Multicore Fibers

(c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.Single Indium Arsenide Quantum Dot emission spectra have been recorded using a four-core, crosstalk-free, multicore fiber placed at the collection arm of a confocal microscope. We developed two different measurement set-ups depending on the relative configuration of the excitation and collection spots. In the single-matched mode, the emission from the excited area is collected by a single core in the multicore fiber, whereas the three remaining cores capture the emission from neighboring, non-excited areas. This procedure allows for the recording of the Quantum Dot emission from carrier diffusion between sample positions separated by more than 6 μm. In the multiple-matched mode, the excitation spot overlaps the four cores emission area. This configuration permits the acquisition of the micro-photoluminescence spectra at different sample positions without scanning. These results show the possibilities offered by multicore fibers for the spectroscopic analysis of single semiconductor Quantum Dot optical emission.This work was supported in part by the Research Excellency Award Program GVA PROMETEO under Grant 2013/012, in part by the Explora Ciencia Tecnologia through the MULTIFUN Project under Grant TEC2013-50552-EXP, in part by the Research Excellency Award Program GVA PROMETEOII under Grant 2014/059, and in part by the Ministerio de Economia y Competitividad under Grant TEC2014-53727-C2-1-R and Grant TEC2014-60378-C2-1-R. The work of G. Munoz-Matutano was supported by the Spanish Ministerio de Economia y Competitividad through the Juan de la Cierva Program under Grant JCI-2011-10686. The work of I. Gasulla was supported by the Spanish Ministerio de Economia y Competitividad through the Ramon y Cajal Program under Grant RyC-2014-16247.Muñoz-Matutano, G.; Barrera Vilar, D.; Fernandez-Pousa, CR.; Chulia-Jordan, R.; Martinez-Pastor, J.; Gasulla Mestre, I.; Seravalli, L.... (2016). Parallel Recording of Single Quantum Dot Optical Emission Using Multicore Fibers. IEEE Photonics Technology Letters. 28(11):1257-1260. https://doi.org/10.1109/LPT.2016.2538302S12571260281

Correspondence: Strongly-driven Re + CO2 redox reaction at high-pressure and high-temperature

Santamaría-Perez, D.; Mcguire, C.; Makhluf, A.; Kavner, A.; Chulia-Jordan, R.; Jorda Moret, JL.; Rey Garcia, F.... (2016). Correspondence: Strongly-driven Re + CO2 redox reaction at high-pressure and high-temperature. Nature Communications. 7:1-3. doi:10.1038/ncomms13647S137Yoo, C. S. et al. Crystal structure of carbon dioxide at high pressure: “superhard” polymeric carbon dioxide. Phys. Rev. Lett. 83, 5527–5530 (1999).Santoro, M. et al. Partially collapsed cristobalite structure in the non molecular phase V in CO2 . Proc. Natl Acad. Sci. 109, 5176–5179 (2012).Datchi, F., Mallick, B., Salamat, A. & Ninet, S. Structure of polymeric carbon dioxide CO2-V. Phys. Rev. Lett. 108, 125701 (2012).Santoro, M. et al. Silicon carbonate phase formed from carbon dioxide and silica under pressure. Proc. Natl Acad. Sci. 108, 7689–7692 (2011).Santoro, M. et al. Carbon enters silica forming a cristobalite-type CO2.SiO2 solid solution. Nat. Commun. 5, 3761 (2014).Corma, A., Rey, F., Rius, J., Sabater, M. J. & Valencia, S. Supramolecular self-assembled molecules as organic directing agent for synthesis of zeolites. Nature 431, 287–290 (2004).Guth, J.-L., Kessler, H. & Wey, R. in Studies in Surface Science and Catalysis Vol. 28 (eds Murakami, Y., Iijima, A. & Ward, J. W.) 121 (Kodansha-Elsevier, 1986).Santamaria-Perez, D. et al. Exploring the chemical reactivity between carbon dioxide and three transition metals (Au, Pt, and Re) at high-pressure high-temperature conditions. Inorg. Chem. 55, 10793–10799 (2016).Magneli, A. Studies on rhenium oxides. Acta Chem. Scand. 11, 28–33 (1957)

Structural and vibrational behavior of cubic Cu1.80(3)Se cuprous selenide, berzelianite, under compression

[EN] We have performed an experimental study of the crystal structure and lattice dynamics of cubic Cu1.80(3)Se at ambient temperature and high pressures. Two reversible phase transitions were found at 2.9 and 8.7 GPa. The indexation of the angle-dispersive synchrotron x-ray diffraction patterns suggests a large orthorhombic cell and a monoclinic cell for the high-pressure phases. Raman measurements provide additional information on the local structure. The compressibility of the three ambient temperature phases has been determined and compared to that of other sulphides and selenides.This work has been performed under financial support from Spanish MICINN under projects MAT2016-75586-C4-2/3-P, FIS2017-83295-P, and PGC2018-097520-A-I00, as well as under the MALTA Consolider Team network (RED2018-102612-T), from Generalitat Valenciana under project PROMETEO/2018/123-EFIMAT, and from Brazilian Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) under projects 307199/2018-5, 422250/2016-3, and 201050/2012-9. D.S-P. and J.A.S. acknowledge the financial support of the Spanish MINECO for the RyC-2014-15643 and RyC-2015-17482 Ramon y Cajal Grants, respectively. We also thank ALBA synchrotron for funded experiment No. 2012010266.Chulia-Jordan, R.; Santamaria-Perez, D.; Pereira, ALJ.; Garcia-Domene, B.; Vilaplana Cerda, RI.; Sans-Tresserras, JÁ.; Martinez-Garcia, D.... (2020). Structural and vibrational behavior of cubic Cu1.80(3)Se cuprous selenide, berzelianite, under compression. Journal of Alloys and Compounds. 830:154646 - 1-154646 - 8. https://doi.org/10.1016/j.jallcom.2020.154646S154646 - 1154646 - 883