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 …
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, …
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 …
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 …
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 …
Why Entangled Photon-Polarization Qubits Violate Bell's Inequality …
Sep 29, 2025 · Let me start by deriving the photon-polarization qubit probabilities using Information Invariance & Continuity from the information-theoretic reconstruction of quantum …
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 …
Qubit error rate of QKD BB84 protocol - Physics Forums
Jan 16, 2018 · Hello everyone, I don't know how to measure the QBER of BB84 protocol in a realistic experiment.In the most paper show the data which is only the number but do not show …
How Do You Transform Qubit States Between Different ... - Physics …
Nov 14, 2018 · Anyone know how to change a basis of a qubit state of bloch sphere given a general qubit state? There are 3 different basis corresponding to each direction x,y,z where …
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 …