Putting Qubits in Blended States
The Hadamard (H) gate puts
qubits in blended states of 
and 
.
It’s the signature gate of quantum computing
and forms the bedrock of quantum programs.
For me, it was one of the two quantum gates
that brought home the terrific potential of
quantum computing.
(The other is the Pauli-Z
gate, which we’ll cover in
Chapter 5,
Beam Me Up, Scotty—Quantum Tagging and Entangling
.)
The H gate is fundamentally a qubelet splitter, which is the basic mechanism to create blended qubits. For example, it takes a qubit, which ...
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