Quantum Physics

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Consider the following quantum circuit:

bit.ly/Zlrijv

(a) What quantum state do you have to input in order to get output |00>?

(b) What quantum state do you have to input in order to get output |11>?

(c) What quantum state do you have to input in order to get output 1/√2(|00>+|11>)?

  • Quantum Physics -

    a) 1/sqrt(2) 0
    0 1/sqrt(2)

  • Quantum Physics -

    please (b) and (c)

  • Quantum Physics -

    b is:

    0 1/sqrt(2)
    -1/sqrt(2) 0

    what is the answer to 13?

  • Quantum Physics -

    what's (c)

  • Quantum Physics -

    c please
    the answer for 13 is c

  • Quantum Physics -

    If the first qubit is in the state 2/sqrt(5)|0> - 1/sqrt(5)|1> and the second qubit is in the state 1/sqrt(2)|0> - i/sqrt(2)|1>, what is the state of the composite system?

  • Quantum Physics -

    c)
    1/2 1/2
    -1/2 1/2

    Are you sure 13 is c?

  • Quantum Physics -

    what is the answer for this:
    Let |ψ⟩=1−i2|0⟩−1+i2|1⟩ and |ϕ⟩=2+i3|0⟩−2i3|1⟩. What is ⟨ψ|ϕ⟩?

  • Quantum Physics -

    please a answer for this:
    What is the matrix (4x4) for ZX (Z applied on the first qubit and X applied on the second qubit)?

  • Quantum Physics -

    Anyone please:

    If the first qubit is in the state 2/sqrt(5)|0> - 1/sqrt(5)|1> and the second qubit is in the state 1/sqrt(2)|0> - i/sqrt(2)|1>, what is the state of the composite system?

  • Quantum Physics -

    2) LINE 1. 2/(sqrt(2)*sqrt(5) (2*i)/(sqrt(2)*sqrt(5))
    LINE 2. -1/(sqrt(2)*sqrt(5))
    -i/(sqrt(2)*sqrt(5))

    What is the matrix (4x4) for ZX (Z applied on the first qubit and X applied on the second qubit)?

  • Quantum Physics -

    Let |ψ⟩=1−i2|0⟩−1+i2|1⟩ and |ϕ⟩=2+i3|0⟩−2i3|1⟩. What is ⟨ψ|ϕ⟩?

  • Quantum Physics -

    ZX 4x4 matrix:
    0100
    1000
    000-1
    00-10

  • Quantum Physics -

    ANSWERS TO QUESTIONS 1,9,14?

  • Quantum Physics -

    I calculated this for the Q1:
    (2+i+i^2)/6
    But is not OK! some suggestion?

  • Quantum Physics -

    14d

  • Quantum Physics -

    thks !! 9a... some help?¡

  • Quantum Physics -

    Yes 9A?

  • Quantum Physics -

    9b is 0.5
    9a?????
    and 1???

  • Quantum Physics -

    Q1 is (3+5*i)/6

    Down to my last entry on 9A???anyone?

  • Quantum Physics -

    IM in the same situation.. is not:
    0.5
    neither
    0.25
    Probably 1?

  • Quantum Physics -

    9a is 1

  • Quantum Physics -

    thank you!!! its correct...

  • Quantum Physics -

    Arigato!

  • Quantum Physics -

    Grazie!!

  • Quantum Physics -

    number 1?

  • Quantum Physics -

    number 1? and 3?

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