Controlling the spontaneous emission rate of single quantum dots in a 2D photonic crystal

Dirk Englund; David Fattal; Edo Waks; Yoshihisa Yamamoto; Jelena Vuckovic

doi:10.1117/12.630993

12 November 2005 Controlling the spontaneous emission rate of single quantum dots in a 2D photonic crystal

Dirk Englund, David Fattal, Edo Waks, Yoshihisa Yamamoto, Jelena Vuckovic

Proceedings Volume 6003, Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosystems; 60030C (2005) https://doi.org/10.1117/12.630993
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

We report on single photon sources produced from photonic crystal - coupled InAs Quantum Dots (QDs). We observe large spontaneous emission rate modification of individual InAs Quantum Dots (QDs) in modified single defect cavities with large quality factor (Q). Compared to QDs in bulk semiconductor, QDs that are resonant with the cavity show an emission rate increase by up to a factor of 8. In contrast, off-resonant QDs indicate up to five-fold rate quenching as the local density of optical states (LDOS) is diminished in the photonic crystal. In both cases we demonstrate photon antibunching, showing that the structure represents an on-demand single photon source with pulse duration from 210 ps to 8 ns. We explain the suppression of QD emission rate using Finite Difference Time Domain (FDTD) simulations and find good agreement with experiment. High multiphoton suppression is achieved by resonant excitation. Finally, we discuss fabrication improvements based on FDTD analysis of already fabricated structures.

Citation Download Citation

Dirk Englund, David Fattal, Edo Waks, Yoshihisa Yamamoto, and Jelena Vuckovic "Controlling the spontaneous emission rate of single quantum dots in a 2D photonic crystal", Proc. SPIE 6003, Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosystems, 60030C (12 November 2005); https://doi.org/10.1117/12.630993

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available