Complete control of the state of a quantum bit (qubit) is a fundamental requirement for any
quantum information processing (QIP) system. In this context, all-optical control techniques
offer the advantage of a well-localized and potentially ultrafast manipulation of individual
qubits in multi-qubit systems. Recently, the negatively charged silicon vacancy centre (SiV−)
in diamond has emerged as a novel promising system for QIP due to its superior spectral
properties and advantageous electronic structure, offering an optically accessible Λ-type …

Full coherent control of quantum systems is a key prerequisite to build a quantum
information processing (QIP) system. Spatially selective and ultrafast control of individual
qubits in multi-qubit systems, on the other hand, optimally is based on all-optical control
techniques using short laser pulses. However, these techniques require optically accessible
quantum systems with suitable electronic level configurations to allow for the application of
ultrafast and thus broadband pulses. Moreover, to enable good scalability, quantum systems …