I am not aware of any research specifically discussing T centers in silicon qubits acting as light-based links between qubits. However, it's important to note that scientific research is continually evolving, and new findings can emerge after my understanding.
Silicon-based qubits are an active area of research for quantum computing, and researchers explore various approaches to develop and improve qubit technologies. Some silicon-based qubits utilize individual electrons trapped in quantum dots or utilize the spins of phosphorus atoms embedded in silicon. These approaches do not typically rely on defects such as T centers.
That being said, the field of quantum computing is rapidly advancing, and there may have been recent developments or ongoing research that I am not aware of. I recommend referring to recent scientific literature or academic research databases to explore the latest findings on this specific topic.