The first computer to use a quantum encryption system was released in 2017.
This 2017 release marked a major milestone in the world of computer technology. For the first time, a computer was released with a quantum encryption system, allowing for unprecedented levels of security and privacy. This revolutionary system utilizes the principles of quantum mechanics to create an encryption key that is virtually impossible to crack
Post-quantum cryptography (PQC), sometimes referred to as quantum-proof, quantum-safe, or quantum-resistant, is the development of cryptographic algorithms that are currently thought, but not proven, to be secure against a cryptanalytic attack by a quantum computer. Most widely used public-key algorithms rely on the difficulty of one of three mathematical problems: the integer factorization problem, the discrete logarithm problem, or the elliptic-curve discrete logarithm problem. All of these problems could be easily solved on a sufficiently powerful quantum computer running Shor's algorithm or possibly alternatives.