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  1. Is the 2-qubit singlet state invariant under bilateral projections?

    Dec 23, 2025 · SUMMARY The 2-qubit singlet state | Ψ = 1 2 (| 01 | 10 ) is invariant under bilateral rotations represented by operators of the form U ⊗ U, where U is a unitary operator. …

  2. 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 …

  3. Quantum computer storage capacity - Physics Forums

    Aug 10, 2022 · A qubit can only store one binary bit, or on the odd occasion, two entangled bits. 32 qubits can store 2^32 different possible patterns, but only 32 bits can be read at one time.

  4. Does a qubit break interference in the double slit experiment?

    Sep 7, 2025 · The qubit is a quantum object, so if the particle was in a superposition of up and down, the qubit can be in a superposition too. Measuring the qubit in an orthogonal direction …

  5. How Does a Qubit Exist as Both 1 and 0 Simultaneously?

    Feb 11, 2024 · A qubit exists in a state of quantum superposition, allowing it to represent both 1 and 0 simultaneously until it is measured. This phenomenon is not merely an analogy but a …

  6. Sending drive Pulse in CQED and visualize the state by QuTip

    Jan 16, 2023 · In the dispersive regime, the qubit acts like a dielectric whose dielectric constant depends on the state of the qubit. This causes the cavity frequency to depend on the state of …

  7. Finding E_J Value of a Qubit: Step-by-Step Guide - Physics Forums

    Mar 6, 2019 · The transition frequency of the qubit is approximated by the formula √ (8E_C E_J) - E_C, with a request for more precise theoretical expressions. Understanding of …

  8. 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 …

  9. 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 …

  10. 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 …