Suppressing decoherence in quantum plasmonic systems by the spectral-hole-burning effect
Jia-Bin You, Xiao Xiong, Ping Bai, Zhang‐Kai Zhou, Wanli Yang, Ching Eng Png, L. C. Kwek, Lin Wu · Physical Review A · 2021
Quantum plasmonic systems suffer from significant decoherence due to the intrinsically large dissipative and radiative dampings. Based on our quantum simulations $via$ a quantum tensor network algorithm, we numerically demonstrate the mitigation of this restrictive drawback by hybridizing a plasmonic nanocavity with an emitter ensemble with inhomogeneously broadened transition frequencies. By burning two narrow spectral holes in the spectral density of the emitter ensemble, the coherent time of Rabi oscillation for the hybrid system is increased tenfold. With the suppressed decoherence, we move one step further in bringing plasmonic systems into practical quantum applications.