Question

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>)?

Answers

Awesome Dude
a) 1/sqrt(2) 0
0 1/sqrt(2)
helpman
please (b) and (c)
Anonymous
b is:

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

what is the answer to 13?
what's (c)
what's (c)
Gyano
c please
the answer for 13 is c
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?
Anonymous
c)
1/2 1/2
-1/2 1/2

Are you sure 13 is c?
Anonymous
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⟩?
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)?
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?
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)?
TIGER
Let |ψ⟩=1−i2|0⟩−1+i2|1⟩ and |ϕ⟩=2+i3|0⟩−2i3|1⟩. What is ⟨ψ|ϕ⟩?
Thanks Tiger and this is Matrix!
ZX 4x4 matrix:
0100
1000
000-1
00-10
THANKS YOU KNOW THIS?
ANSWERS TO QUESTIONS 1,9,14?
TIGER
I calculated this for the Q1:
(2+i+i^2)/6
But is not OK! some suggestion?
Anonymous
14d
TIGER
thks !! 9a... some help?¡
Anonymous
Yes 9A?
TIGER
9b is 0.5
9a?????
and 1???
Maverick
Q1 is (3+5*i)/6

Down to my last entry on 9A???anyone?
TIGER
IM in the same situation.. is not:
0.5
neither
0.25
Probably 1?
SyLaR
9a is 1
TIGER
thank you!!! its correct...
Maverick
Arigato!
TIGER
Grazie!!
Anonymous
number 1?
Anonymous
number 1? and 3?

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