Robust Driving Scheme for Triggered Solid-State Quantum Light Sources: Notch-filtered Adiabatic Rapid Passage (NARP)

Single photon sources play a significant role in several emerging applications in the field of quantum information such as single photon quantum computing [1], and quantum-enhanced sensing and metrology [2]. The ideal quantum emitter would be based on a solid-state platform and produce single photons on-demand, with successive photons being indistinguishable in all degrees of freedom. To achieve the highest degree of indistinguishability, resonant pumping of the quantum emitter is required to eliminate incoherent relaxation pathways. This necessitates an efficient approach to filter the scattered excitation light from the single photon stream. We present a novel pumping scheme called NARP [3] which utilizes frequency-swept optical pulses containing a spectral hole resonant with the optical transition in the emitter. This scheme retains all the benefits of adiabatic rapid passage for pumping solid-state emitters including robustness to variations in the properties of emitters and the laser source as well as the ability to suppress decoherence tied to electron-phonon coupling. Our scheme would enable <10^-8 scattered photons per emitted photon with only a 4% detection loss. We demonstrate quantum state inversion using NARP in a single semiconductor quantum dot.

[1] Madsen, L. S., et. al. Quantum computational advantage with a programmable photonic processor. Nature, 606(7912), 75-81 (2022).

[2] Müller, M., Vural, H., Schneider, C., Rastelli, A., Schmidt, O. G., Höfling, S., and Michler, P. Quantum-dot single-photon sources for entanglement enhanced interferometry. Physical review letters, 118(25), 257402 (2017).

[3] Wilbur, G. R., Binai-Motlagh, A., Clarke, A., Ramachandran, A., Milson, N., Healey, J. P., O’Neal, S., Deppe, D. G., Hall, K. C. Notch-filtered Adiabatic Rapid Passage for Optically-Driven Quantum Light Sources. APL Photonics (in press) (2022).