Quantum Cryptography at the Computational Frontier

Romain Alléaume

Shannon, Keith, E. Towe, O.K. Tonguz

Quantum computing and quantum communications are exciting new frontiers in computing and communications. Indeed, the massive investments made by the governments of the US, China, and EU in these new technologies are not a secret and are based on the expected potential of these technologies to revolutionize communications, computing, and security. In addition to several field trials and hero experiments, a number of companies such as Google and IBM are actively working in these areas and some have already reported impressive demonstrations in the past few years. While there is some skepticism about whether quantum cryptography will eventually replace classical cryptography, the advent of quantum computing could necessitate the use of quantum cryptography as the ultimate frontier of secure communications. This is because, with the amazing speeds demonstrated with quantum computers, breaking cryptographic keys might no longer be a daunting task in the next decade or so. Hence, quantum cryptography as the ultimate frontier in secure communications might not be such a far-fetched idea. It is well known that Heisenberg's Uncertainty Principle is essentially a "negative result" in Physics and Quantum Mechanics. It turns out that Heisenberg's Uncertainty Principle, one of the most interesting results in Quantum Mechanics, could be the theoretical basis and the main scientific principle behind the ultimate frontier in quantum cryptography or secure communications in conjunction with Quantum Entanglement.

Akinori Kawachi, Takeshi Koshiba

Tanmay Tripathi, Abhinav Awasthi, Shaurya Singh +1 more

Cryptography plays a pivotal role in safeguarding sensitive information and facilitating secure communication. Classical cryptography relies on mathematical computations, whereas quantum cryptography operates on the principles of quantum mechanics, offering a new frontier in secure communication. Quantum cryptographic systems introduce novel dimensions to security, capable of detecting and thwarting eavesdropping attempts. By contrasting quantum cryptography with its classical counterpart, it becomes evident how quantum mechanics revolutionizes the landscape of secure communication.

Manuel Calixto

Banghong Guo, Min Hu, Rui Mao +1 more

As a strategic frontier technology, quantum cryptography and quantum computation are closely related to national security and forward-looking technology strategy, and the application of quantum computation in the future will definitely promote the large-scale application of quantum networks. We briefly review the research progress of quantum secure communication and quantum computing and focus on the introduction of the high-performance quantum key distribution (QKD) terminal, quantum network, basic scientific problems of quantum computing in quantum chip devices and qubits manipulation and some practical important quantum technologies such as the integration of quantum and classical communication.