I'll check out the references mentioned, thanks.
I'm wondering about the source of a fresh superposition at a more fundamental level than, say, other circuitry, electricity supply, gates, etc. Yes, in my example the qubit starts at a known state because I just observed it. Assume at that point...
Yes, I'm thinking quantum computing qubits. Since such qubits are generally reusable for additional computations, I believe a fresh superposition must develop at some point after observation ceases. I am curious when that superposition refresh, if you will, is thought to happen, and by what process.
When I observe a qubit's state, decoherence happens such that I find the qubit in a particular state. After I cease observing a qubit's state, what physical process causes a fresh superposition of states to develop? Is zero-point energy at least a contributor?
I was referring to the explanation of the miwoi model (a combination of Many Worlds and Uncertainty Principle). It's deceptively simple, yet is also consistent with other things quantum such as tunneling, Ehrenfest's theorem, zero-point energy, and more. The model's prediction that matter's...
If you are looking for something to help you visualize single-photon interference in the double slit experiment, consider the following model. Imagine each possible state of the experiment's photon exists in a different world. So, in one world the photon traces a certain path to the detector...
Thanks for your reply. I'm thinking of effects like quantum tunneling. alpha particle emission, current leakage from electronics, etc. in which particles escape their classical range limits. AFAIK, without uncertainty, those effects would not occur, and their corresponding transfer of thermal...
Per the Heisenberg uncertainty principle, a particle does not have a precisely defined location. Does such uncertainty contribute to the transfer of thermal energy (i.e. entropy)? Is uncertainty the primary means for the transfer of thermal energy at the quantum level?
OK, thanks, what about the following more-complex scenario #5:
A double-slit experiment isolated within an ideal box is activated by a timer, and runs for a brief but sufficient period to build an interference pattern, or not, on its detector screen. The screen saves the pattern, or lack...
OK, thanks for the replies, they are helping. Please consider scenario #4:
#4) A visual of this experiment's detector screen, and only that, is being streamed live via the interwebs. Those watching this live stream are provided no way in advance to know whether experimenter #1 (with ordinary...
Do I have the proper understanding of the following three double-slit experiment situations?
#1 While a standard double-slit experiment is run via a Mach-Zehnder interferometer apparatus that completely lacks which-way detectors, can an ordinary human experimenter be present and watch that...
Apologies, Nugatory, I was not clear about that. What I meant by the "quantum event" is the experiment's radioactive decay. Now, I think I see what you were saying. The cat's alive or dead whether the box is opened or not. Yes, that makes sense to me.
Now, before the box is opened, do those...
"However, that was a century ago; since then we have learned about decoherence and how the normal evolution of a quantum system quickly turns these macroscopic superpositions into classical outcomes, whether we look at the result or not."
Thank you for the informative replies. Let me see if I...
In the Schrödinger's cat thought experiment in its standard configuration, before the experimenter opens the box that contains the cat, has any relevant QM measurement been made by any objects involved in this instance of this experiment?
My speculation/understanding: Yes, the cat knows (is...
The key phrase is "actual nothing." There is no true vacuum in a quantum system. What may seem to be empty space one moment can have virtual particles popping into it the next via random fluctuations. This is something known as zero-point energy. It arises from the uncertainty associated with...