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by
Ciro Santilli
(@cirosantilli,
32
)
Bell circuit
tags:
Quantum circuit
A
quantum circuit
which when fed with input
∣
0
0
⟩
produces the
Bell state
.
In
Qiskit
at:
qiskit/hello.py
.
Figure 1
.
Quantum circuit
that generates the
Bell state
.
Source
.
The fundamental intuition for this circuit is as follows.
First the
Hadamard gate
makes the first
qubit
be in a 50/50 state.
Then, the
CNOT gate
gets controlled by that 50/50 value, and the controlled qubit also gets 50/50 chance as a result.
However, both qubits are now
entangled
: the result of the second qubit depends on the result of the first one. Because:
if the first qubit is 0, cnot is not active, and so the second qubit remains 0 as its input
if the first qubit is 1, cnot is active, and so the second qubit is flipped to 1
Ancestors
Bell state
Quantum state
Quantum computing
Quantum information
Information
Computer
Information technology
Area of technology
Technology
Index
Incoming links
Introduction to quantum computing
Synonyms
cirosantilli/bell-state-circuit
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