- #1
DodongoBongo
- 11
- 0
How do you do a Bell measurement on a state that doesn't have a power of 2 number of qubits? I've got GHZ states like this:
[tex]
|GHZ_{ijk}> = \frac{|0_{i}0_{j}0_{k}> + |1_{i}1_{j}1_{k}>}{\sqrt{2}}
[/tex]
And I'm trying to Bell measure the following state at qubits 2 and 3:
[tex]
|GHZ_{012}>|GHZ_{345}>
[/tex]
I've permuted my Bell bases so I can measure those two qubits, but I'm not sure exactly what to do next. I've been doing a bit of research and I've been thinking of tracing away one of the qubits, but I'm not sure if that's really the right way to do it. Any insight or help is appreciated.
[tex]
|GHZ_{ijk}> = \frac{|0_{i}0_{j}0_{k}> + |1_{i}1_{j}1_{k}>}{\sqrt{2}}
[/tex]
And I'm trying to Bell measure the following state at qubits 2 and 3:
[tex]
|GHZ_{012}>|GHZ_{345}>
[/tex]
I've permuted my Bell bases so I can measure those two qubits, but I'm not sure exactly what to do next. I've been doing a bit of research and I've been thinking of tracing away one of the qubits, but I'm not sure if that's really the right way to do it. Any insight or help is appreciated.