Suppressing Spectral Diffusion of the Emitted Photons with Optical Pulses

Abstract

In many quantum architectures the solid-state qubits, such as quantum dots or color centers, are interfaced via emitted photons. However, the frequency of photons emitted by solid-state systems exhibits slow uncontrollable fluctuations over time (spectral diffusion), creating a serious problem for implementation of the photon-mediated protocols. Here we show that a sequence of optical pulses applied to the solid-state emitter can stabilize the emission line at the desired frequency. We demonstrate efficiency, robustness, and feasibility of the method analytically and numerically. Taking nitrogen-vacancy (NV) center in diamond as an example, we show that only several pulses, with the width of 1 ns, separated by few ns (which is not difficult to achieve) can suppress spectral diffusion. Our method provides a simple and robust way to greatly improve the efficiency of photon-mediated entanglement and/or coupling to photonic cavities for solid-state qubits.

accepted to Physical Review Letters, Supplemental Material included

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• Generation of arbitrary all-photonic graph states from quantum emitters
• Photonic graph state generation from quantum dots and color centers for quantum communications
• Rational Design of Efficient Defect-Based Quantum Emitters
• Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
• Absorption Spectrum of a Two-Level System Subjected to a Periodic Pulse Sequence
• Modeling the performance and bandwidth of single-atom adiabatic quantum memories
• Pulse-Enhanced Two-Photon Interference with Solid State Quantum Emitters
• Floquet Engineering and Harnessing Giant Atoms in Frequency-Comb Emission and Bichromatic Correlations in Waveguide QED
• Tuning Spectral Properties of Individual and Multiple Quantum Emitters in Noisy Environments