Abstract
We investigate the influence of exciton-phonon coupling on the dynamics of a strongly coupled quantum dot-photonic crystal cavity system and explore the effects of this interaction on different schemes for non-classical light generation. By performing time-resolved measurements, we map out the detuning-dependent polariton lifetime and extract the spectrum of the polariton-to-phonon coupling with unprecedented precision. Photon-blockade experiments for different pulse-length and detuning conditions (supported by quantum optical simulations) reveal that achieving high-fidelity photon blockade requires an intricate understanding of the phonons' influence on the system dynamics. Finally, we achieve direct coherent control of the polariton states of a strongly coupled system and demonstrate that their efficient coupling to phonons can be exploited for novel concepts in high-fidelity single photon generation.
Highlights
The strong coupling between a single photon and single quantum emitter is of substantial interest for both investigations of the fundamentals of quantum optics and potential applications in optical computing, quantum metrology, and quantum cryptography [1,2,3]
Photonic crystal cavities are especially promising for on-chip integration of quantum optical circuits because of the convenient fabrication of integrated waveguide and detector structures [14]
In contrast to other systems, semiconductor quantum emitters are usually embedded in a crystalline host matrix, resulting in strong interactions with phonons
Summary
The strong coupling between a single photon and single quantum emitter is of substantial interest for both investigations of the fundamentals of quantum optics and potential applications in optical computing, quantum metrology, and quantum cryptography [1,2,3]. We conclude that the high efficiency of this coupling entails its importance for all applications of strongly coupled solid-state systems. To corroborate this finding, we investigate the influence of electron-phonon interaction on one of the key applications of strongly coupled systems: nonclassical light generation. We investigate the influence of electron-phonon interaction on one of the key applications of strongly coupled systems: nonclassical light generation To this end, we perform photon-blockade experiments and complementary quantum optical simulations under different pulse-length and detuning conditions, which reveal that the pulse length has to be chosen correctly for a given detuning in order to obtain a high-fidelity photon blockade. We demonstrate that the efficient coupling to phonons can be utilized for novel concepts in high-fidelity single-photon generation
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
