Open Access Archives - Page 15 of 15 - IEEE Transactions on Quantum Engineering

Fault-Tolerant Resource Estimation of Quantum Random-Access Memories

Quantum random-access lookup of a string of classical bits is a necessary ingredient in several important quantum algorithms. In some cases, the cost of such quantum random-access memory (qRAM) is the limiting factor in the implementation of the algorithm. In this article, we study the cost of fault-tolerantly implementing a qRAM. We construct and analyze […]

Reducing the Cost of Implementing the Advanced Encryption Standard as a Quantum Circuit

January 16, 2020Brandon Langenberg; Hai Pham; Rainer SteinwandtOpen Access, Quantum SoftwareEncryption, Logic gates, NIST, Qubit, Wires

To quantify security levels in a postquantum scenario, it is common to use the quantum resources needed to attack the Advanced Encryption Standard (AES) as a reference value. Specifically, in the National Institute of Standards and Technology’s ongoing postquantum standardization effort, different security categories are defined that reflect the quantum resources needed to attack AES-128, […]