Schrödinger's Cat and the Qbit - Physics Forums
Apr 2, 2024 · If, on the other hand, the cat is truly in a superposition of “alive” and “dead”, then we have a quantum bit of information (qubit or Qbit). Let explain the difference between a Cbit and a Qbit and …
How Does a Qubit Exist as Both 1 and 0 Simultaneously?
Feb 11, 2024 · I think 10 more IQ points would help me understand quantum physics at the level I'd like. That said, I'd like to know more about Qbits. I've watched several videos about them, and they say …
Information content of a qubit • Physics Forums
Nov 22, 2020 · I have just started reading Neilson and chuang's book on quantum computing and two times already have they said that when a qubit is not observed, it can contain infinite information. …
Finding E_J Value of a Qubit: Step-by-Step Guide
Mar 6, 2019 · Hi everyone, I’ve performed microwave measurements on a 3D transmon and want to find the E_J value of the qubit. I’ve tried searching through many papers, particularly Koch et al, about …
Why Entangled Photon-Polarization Qubits Violate Bell's Inequality per ...
Sep 29, 2025 · Let me start by deriving the photon-polarization qubit probabilities using Information Invariance & Continuity from the information-theoretic reconstruction of quantum mechanics, just as I …
How to understand quantum computers? • Physics Forums
Apr 4, 2025 · A single qubit can be a superposition of those two states. But the magic comes when you have many entangled qubits. So 10 bits will have one of 1024 states. 10 qubits can be a …
What Planck Length Is and It’s Common Misconceptions
Sep 9, 2015 · The Planck length is an extremely small distance constructed from physical constants. Many misconceptions generally overstate its physical significance, stating that it’s the inherent pixel …
Calculating qubit purity/entanglement in a quantum computer
Sep 21, 2024 · I had written a simulator for a quantum computer and wanted to be able to calculate the values of the "purity of reduced states". "Purity of reduced states" is a quantity that IBM provides on …
Does a qubit break interference in the double slit experiment?
Sep 7, 2025 · According to recent podcast between Jacob Barandes and Sean Carroll, Barandes claims that putting a sensitive qubit near one of the slits of a double slit interference experiment is sufficient …
Quantum Physics Forum • Physics Forums
Apr 18, 2020 · Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.