From the course: Quantum Computing Fundamentals
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Superdense coding
From the course: Quantum Computing Fundamentals
Superdense coding
- We've seen lots of single and multi-qubit logic gates and explored key quantum concepts, like super position and entanglement. Now it's finally time to put all those building blocks together to write quantum algorithms that do real work. - Our first algorithm is known as superdense coding. This is a quantum communication protocol that securely sends classical bits of information by transmitting a smaller number of quantum bits. This protocol starts with the sender and receiver each having half of an entangled pair of qubits before the message needs to be sent. Let's say I want to send two classical bits of information to Baron. The first thing we need is a pair of entangled qubits. - [Todd] Here you go! - Thanks, Todd! - It doesn't matter where these entangled qubits come from. I could have created them- - Or I could have entangled them- - Or they could have come from a third party. These two qubits are entangled…
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