My take on death is somewhat similar to what some physicist's theories are of black holes, information, and consciousness.
The information is never lost essentially. Black holes might have a quantum aspect nature to them but it still obeys the same classical laws of thermodynamics and entropy.
And as far as I know, the human brain is essentially a quantum computer. The qubits being the microtubules within the neurons (the microtubules are the cytoskeletons and the major building blocks of the neurons, cells, tissues, etc...). This I got from learning about Hameroff & Penrose's ORCH OR theory of consciousness.
There is also another legit theory of consciousness from Dr. Edgar Mitchell (former Apollo astronaut) called PCAR. Phase-Conjugate-Adaptive-Resonance.
Essentially the brain is like a computer but it is also like a receiver and MRI scanner.
I think the ultimate final theory of consciousness is a mix of ORCH OR and PCAR in my opinion.
That said, how it relates to death is this:
Your memories are stored within your brain and you have consciousness because of your brain(moments of awareness, roughly 60 times a second), when you die you lose consciousness and all of your memories but you can still dream in the quantum realm of multiple universes and superpositions (essentially you can watch TV forever but can't ever feel anything). In the quantum realm, time is meaningless so you wouldn't necessarily be waiting to regain consciousness in a human body form. You can gain consciousness in other forms. Its completely plausible that physically speaking, there are other conduits besides the human brain that can harbor sustained consciousness. It could be a star exploding or anything involving hot gases in the universe. The interacting particles within those gases, if they are complex enough could possibly sustain consciousness for brief moments.
I think re-incarnation is just being able to re-gain consciousness in another parallel universe after death. The mechanism for that I don't know. Just a suggestion. Of course you would lose all of your memories from your previous lifetime because the memories that were stored in your brain died along with the body.