Broadband room temperature pico-cavity QED with single emitters || Markus Raschke скачать в хорошем качестве

Broadband room temperature pico-cavity QED with single emitters || Markus Raschke

Optical cavities can enhance and control the light-matter interaction by modifying the local electromagnetic environment of a quantum emitter. However, large cavity mode volumes have prevented strong coupling of single emitters under ambient conditions. We demonstrate tip-enhanced strong coupling (TESC) spectroscopy, imaging, and control based on scanning probe microscopy using plasmonic antenna-tips forming a pico-cavity with the emitter. We perform quantum state control on interlayer excitons in 2D semiconductor monolayer and in single quantum dots observe room temperature mode splitting up to 160 meV and anti-crossing in the energy spectra with detuning, with nanometer scale mode confinement, and atomic precision spatial control. In the extension to the infrared, we achieve strong coupling of molecular vibrations through configurable optical interactions of a nanotip with hybridization and mode splitting. We observe nanotip-induced quantum interference of vibrational excitation pathways in spectroscopic nanoimaging, associated with giant Purcell enhancement greater than 106. This work establishes a new paradigm of pico-cavity QED for coherent control of quantum states for chemical metrology and optical nano-imaging.