Quantum Dots in Photonic Crystal Waveguides: From Efficient Single Photon Sources to Deterministic Photon-Photon Interaction
Research output: Book/Report › Ph.D. thesis › Research
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Quantum Dots in Photonic Crystal Waveguides : From Efficient Single Photon Sources to Deterministic Photon-Photon Interaction . / Sollner, Immo Nathanael.
The Niels Bohr Institute, Faculty of Science, University of Copenhagen, 2014. 214 p.Research output: Book/Report › Ph.D. thesis › Research
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TY - BOOK
T1 - Quantum Dots in Photonic Crystal Waveguides
T2 - From Efficient Single Photon Sources to Deterministic Photon-Photon Interaction
AU - Sollner, Immo Nathanael
PY - 2014
Y1 - 2014
N2 - This Thesis is focused on the study of quantum electrodynamics in photonic crystal waveguides. We investigate the interplay between a single quantum dot and the fundamental mode of the photonic crystal waveguide. We demonstrate experimental coupling eciencies for the spontaneous emission into the mode exceeding 98% for emitters spectrally close to the band-edge of the waveguide mode. In addition we illustrate the broadband nature of the underlying eects, by obtaining coupling ecienciesabove 90% for quantum dots detuned from the band edge by as far as 20nm. These values are in good agreement with numerical simulations. Such a high coupling eciency implies that the system can be considered an articial 1D-atom, and we theoretically show that this system can generate strong photon-photon interaction, which is an essential functionality for deterministic optical quantum information processing. We present the progress towards the experimental demonstration of such a strong photon-photon nonlinearity. We present the rst signatures of resonant transmission inphotonic crystal waveguides and discuss some of the encountered diculties and future directions of the experiments. In the nal part of this Thesis we discuss a novel type of photonic crystal waveguide and show its applications for on-chip quantum information processing. This structure was designed for the ecient mapping of two orthogonal circular dipole transitions to dierent propagation paths of the emitted photon, i.e. exhibits chiral quantum-dot-waveguide coupling. Such a structure is ideally suited for a number of applications in quantum information processing and among others we propose an on-chip spin-photon interface, a single photon transistor, and a deterministic cNOT gate.
AB - This Thesis is focused on the study of quantum electrodynamics in photonic crystal waveguides. We investigate the interplay between a single quantum dot and the fundamental mode of the photonic crystal waveguide. We demonstrate experimental coupling eciencies for the spontaneous emission into the mode exceeding 98% for emitters spectrally close to the band-edge of the waveguide mode. In addition we illustrate the broadband nature of the underlying eects, by obtaining coupling ecienciesabove 90% for quantum dots detuned from the band edge by as far as 20nm. These values are in good agreement with numerical simulations. Such a high coupling eciency implies that the system can be considered an articial 1D-atom, and we theoretically show that this system can generate strong photon-photon interaction, which is an essential functionality for deterministic optical quantum information processing. We present the progress towards the experimental demonstration of such a strong photon-photon nonlinearity. We present the rst signatures of resonant transmission inphotonic crystal waveguides and discuss some of the encountered diculties and future directions of the experiments. In the nal part of this Thesis we discuss a novel type of photonic crystal waveguide and show its applications for on-chip quantum information processing. This structure was designed for the ecient mapping of two orthogonal circular dipole transitions to dierent propagation paths of the emitted photon, i.e. exhibits chiral quantum-dot-waveguide coupling. Such a structure is ideally suited for a number of applications in quantum information processing and among others we propose an on-chip spin-photon interface, a single photon transistor, and a deterministic cNOT gate.
UR - https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122950257005763
M3 - Ph.D. thesis
BT - Quantum Dots in Photonic Crystal Waveguides
PB - The Niels Bohr Institute, Faculty of Science, University of Copenhagen
ER -
ID: 122936198