Quantum Teleportation

The Protocol

1. Alice and Bob share an entangled pair
2. Alice performs a Bell measurement on her qubit + the message
3. Alice sends 2 classical bits to Bob
4. Bob applies corrections based on those bits
5. Bob's qubit now has the original quantum state!

The Code

# Quantum Teleportation
QUBIT msg, alice, bob
m1 = 0
m2 = 0
result = 0
 
# Prepare message in superposition
H(msg)
 
# Create entangled pair
H(alice)
CNOT(alice, bob)
 
# Bell measurement
CNOT(msg, alice)
H(msg)
 
MEASURE msg -> m1
MEASURE alice -> m2
 
# Bob has the teleported state
MEASURE bob -> result

Understanding the Results

The 3-bit outcome is m1 m2 result. Bob's qubit shows ~50% 0 and ~50% 1 - the original superposition was teleported!

Try It Yourself