Quantum Data Compression
In the classical world, data compression is everywhere. From zip files to video streaming, compression helps us store and transmit more with less. The idea is simple—remove redundancy and represent….
Tag: Quantum communication
Holevo Bound
In classical communication, if you send a message—say a letter or a digital bit—the receiver gets the full message. If you send 1 bit, the receiver gets 1 bit of….
Quantum Mutual Information
Let’s begin with the basic idea of mutual information from classical information theory. It tells us how much knowing one variable tells us about another. For example, if you know….
Quantum Entropy Measures
In classical information theory, entropy is used to measure uncertainty or the average information content of a message. This idea is extended in the quantum world through quantum entropy measures,….
QIP (Quantum Interactive Polynomial Time)
QIP stands for Quantum Interactive Polynomial time. It is a quantum complexity class that describes problems solvable by a quantum verifier who interacts with a quantum prover over multiple rounds….
Distributed Quantum Computing
Quantum computing is poised to revolutionize how we process information. But building a single, all-powerful quantum computer is incredibly hard, especially when scaling to large numbers of qubits. This is….
Quantum Channel Capacities
Quantum channels form the backbone of quantum communication. Whether it’s distributing entanglement, transmitting qubits, or sending classical information securely, the capacity of a quantum channel tells us how much information….
Satellite-Based Quantum Communication
As we move toward a future powered by quantum technologies, one of the biggest challenges is scaling quantum communication across vast distances—far beyond the reach of fiber optics or terrestrial….
Quantum Network Protocols
As classical networks revolutionized the way we communicate, share data, and build systems, quantum networks aim to do the same—but with fundamentally different principles. To make these networks work, specialized….
Quantum Dense Coding
In the classical world, sending a message with two bits of information requires two bits of data to be transmitted. Quantum Dense Coding flips this logic on its head. It….