there is no specific timeframe or consensus within the transhumanism community regarding the ability to trace back and copy information or memories of long-deceased individuals using quantum computers. It's important to note that transhumanism encompasses a broad range of ideas and perspectives, and opinions on the feasibility and timeline of such endeavors can vary significantly.
Quantum computing is still an area of active research and development, and it's challenging to predict when and how it will achieve significant breakthroughs. At present, quantum computers are still in their early stages and face several technical hurdles, including qubit stability, error correction, and scalability.
To trace back and copy detailed information or memories of deceased individuals, one would require an advanced understanding of the human brain's complex processes and the ability to accurately record and recreate those processes. While there has been progress in the field of neuroscience and brain-computer interfaces, achieving the level of precision necessary for such endeavors remains a significant scientific and technical challenge.
It's important to maintain a realistic perspective on the capabilities and limitations of technology. While advancements may occur in the future, predicting specific timelines or requirements, such as the number of qubits needed for such a task, is speculative at this point. Continued scientific research and technological advancements will play a crucial role in determining the feasibility and possibilities of such endeavors in the future.