Quantum Physics
posted by helpful .
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 
Awesome Dude
a) 1/sqrt(2) 0
0 1/sqrt(2) 
Quantum Physics 
helpman
please (b) and (c)

Quantum Physics 
Anonymous
b is:
0 1/sqrt(2)
1/sqrt(2) 0
what is the answer to 13? 
Quantum Physics 
what's (c)
what's (c)

Quantum Physics 
Gyano
c please
the answer for 13 is c 
Quantum Physics 
Ula
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 
Anonymous
c)
1/2 1/2
1/2 1/2
Are you sure 13 is c? 
Quantum Physics 
Anonymous
what is the answer for this:
Let ψ⟩=1−i20⟩−1+i21⟩ and ϕ⟩=2+i30⟩−2i31⟩. What is ⟨ψϕ⟩? 
Quantum Physics 
Anonymous
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 
Neo
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 
TIGER
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 
TIGER
Let ψ⟩=1−i20⟩−1+i21⟩ and ϕ⟩=2+i30⟩−2i31⟩. What is ⟨ψϕ⟩?

Quantum Physics 
Thanks Tiger and this is Matrix!
ZX 4x4 matrix:
0100
1000
0001
0010 
Quantum Physics 
THANKS YOU KNOW THIS?
ANSWERS TO QUESTIONS 1,9,14?

Quantum Physics 
TIGER
I calculated this for the Q1:
(2+i+i^2)/6
But is not OK! some suggestion? 
Quantum Physics 
Anonymous
14d

Quantum Physics 
TIGER
thks !! 9a... some help?¡

Quantum Physics 
Anonymous
Yes 9A?

Quantum Physics 
TIGER
9b is 0.5
9a?????
and 1??? 
Quantum Physics 
Maverick
Q1 is (3+5*i)/6
Down to my last entry on 9A???anyone? 
Quantum Physics 
TIGER
IM in the same situation.. is not:
0.5
neither
0.25
Probably 1? 
Quantum Physics 
SyLaR
9a is 1

Quantum Physics 
TIGER
thank you!!! its correct...

Quantum Physics 
Maverick
Arigato!

Quantum Physics 
TIGER
Grazie!!

Quantum Physics 
Anonymous
number 1?

Quantum Physics 
Anonymous
number 1? and 3?
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