Category: Quantum Internet

The Quantum Internet is a theoretical system of interconnected quantum computers that uses quantum signals to communicate and perform computations that are far beyond the capabilities of classical systems. Key concepts include quantum entanglement, where particles are instantly connected regardless of distance; quantum superposition, allowing a quantum bit (qubit) to exist in multiple states simultaneously, thus exponentially increasing computational power compared to binary bits; and quantum teleportation, a method to transfer quantum information over long distances. The Quantum Internet would also use quantum key distribution (QKD), a secure communication method where cryptographic keys are generated and transmitted using a quantum channel, making them immune to traditional eavesdropping techniques. This network would be protected by quantum cryptography, making it extremely secure. However, developing a robust, scalable Quantum Internet is a significant scientific and engineering challenge, due to issues such as qubit instability and the difficulty of maintaining quantum entanglement over long distances.