Superdense Coding | Transmitting 2 Classical Bits via 1 Qubit
Quick Technical Answer:
Superdense coding enables a sender to transmit two classical bits of information to a receiver by sending only a single physical qubit, doubling the channel capacity by utilizing a pre-shared entangled Bell pair.
Formula / Unitary:
00 \to I, \quad 01 \to Z, \quad 10 \to X, \quad 11 \to iY
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Frequently Asked Questions
How is Superdense Coding the inverse of Quantum Teleportation?
Teleportation uses 1 entangled pair + 2 classical bits to transmit 1 qubit. Superdense coding uses 1 entangled pair + 1 transmitted qubit to transmit 2 classical bits.