Level 3
Entanglement
Entanglement is a shared quantum state where measured outcomes are linked even though each result is individually random.
Visualize
A Bell pair mostly returns matching results: 00 or 11.
Understand
H creates uncertainty; CNOT links the second qubit to the first.
Why it matters
Entanglement powers teleportation, error correction, and many algorithmic speedups.
Misconception
Entanglement does not let you send faster-than-light messages.
Apply
Run Bell and look for missing 01 and 10 counts.
Example DSL
# Bell qubits 2 H 0 CX 0 1 MEASURE 0 MEASURE 1
Quick check
In the Bell sample, which outputs should dominate?