Optical Two-Dimensional Coherent Spectroscopy of Color Centers in Silicon Carbide
Abstract
The objective of this project is to study quantum coherence and coupling of color centers in silicon carbide (SiC) in relation with the sample fabrication parameters, by using an advanced ultrafast optical spectroscopic technique known as optical two-dimensional coherent spectroscopy (2DCS). We will also explore the possibility of ultrafast qubit operations in SiC by using femtosecond pulses. In quantum information technologies, solid-state-based, on-demand single-photon-emitters (SPEs) are the fundamental building blocks for high-density, on-chip quantum circuits. One of the promising solid-state SPE systems is the color centers in solids. A promising host material for color centers is SiC, which has recently surged as a candidate for scalable and integrated quantum photonics. Several naturally occurring color centers in SiC can emit in a wide range of wavelength. Some of the color centers have quantum properties suitable for SPEs and other quantum application. More importantly, SiC can be integrated with the existing semiconductor technologies for building electronics and optoelectronics. Silicon carbide is compatible with metal-oxide-semiconductor (CMOS) and has been widely adapted by the industry. Therefore, SiC-based color centers can take advantage of the existing industrial infrastructure and provide a more amenable platform for quantum devices. To fully realize the potential of SiC in quantum applications, it is essential to understand the fundamental properties of quantum coherence including its characteristic time scales, relaxation and decoherence mechanisms, and many-body coupling in color centers. We propose to use a unique coherent spectroscopic technique, optical 2DCS, to study the fundamental properties of quantum coherence. Optical 2DCS can separate homogeneous and inhomogeneous linewidths, isolate and characterize different underlying processes including phonon interactions and coherent couplings, and provide extremely sensitive detection of dipole-dipole interactions. We will perform various 2DCS measurements on color centers in SiC to investigate the fundamental time parameters in relation with the sample fabrication parameters, study the quantum dynamics of phonon interactions, probe coherent coupling and their dynamics, and study dipole-dipole interaction between color centers. By using femtosecond laser pulses, we will demonstrate ultrafast quantum operations of color center-based qubits in SiC.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 24, 2023
- Source ID
- W911NF2310195
Entities
People
- Hebin Li
Organizations
- Army Contracting Command
- Florida International University
- Office of the Secretary of Defense