The most successful coherence preservation approaches for quantum bits emphasize identifying and fixing errors without qubit measurement since it could disintegrate their quantum information. Implementations such as stabilizer codes and the surface code leverage entanglement and redundancy through logical qubits data encoding into several physical qubits. This framework allows the system to detect and fix errors in phase and bit-flip scenarios. To sustain coherence and permit lengthy sequences of quantum operations, the techniques need frequent surveillance for errors using innovative protocols, implying that executing the fault-tolerant protocols does not add undesired mistakes. These error detection and correction schemes combined with hardware advances are vital for coherent quantum computing, ensuring the field achieves scalability and practicality levels, thus realizing dependable quantum algorithm execution.