Quantum computing and information science are driving a new technological revolution by utilizing the fundamental principles of quantum physics to tackle computational problems that remain unsolable for even the most advanced classical supercomputers. The field, which integrates quantum mechanics with information theory, promises to accelerate breakthroughs in chemistry, materials science, and global communications.
Mechanics of Quantum Computing
The emerging discipline of quantum information science marries the study of the universe at its smallest scales—such as atoms, molecules, and light—with information theory, which provides the foundation for modern computing and the internet. By using the smallest bits of matter and energy, including electrons within an atom or massless particles of light, scientists are developing machines capable of simulating the quantum nature of matter.
Core Quantum Principles
Unlike traditional computers that rely on binary bits, quantum computers utilize quantum bits, or qubits. According to IBM, these particles behave in ways that are often counterintuitive compared to classical physics, relying on four key principles: superposition, entanglement, decoherence, and interference. Through superposition, a qubit can exist in a state representing a combination of all possible configurations, allowing for multidimensional computation.
Industrial Applications
The practical utility of quantum computing is expected to fall into two primary categories: modeling physical systems and identifying patterns within complex data. Because quantum mechanics acts as the 'operating system of the universe,' these computers are uniquely suited for chemistry and materials science. Researchers may use this technology to identify new molecules for pharmaceutical or engineering applications much faster than currently possible.
Data and Economic Impact
Beyond physical modeling, quantum algorithms can uncover structures in data that classical algorithms might miss. This capability has significant implications for biological research, such as protein folding, and the financial sector. IBM estimates that the growth of this technology could result in a quantum computing industry valued at $1.3 trillion by the year 2035.
NIST's Historical Role
The National Institute of Standards and Technology (NIST) has been a central figure in this field since the early 1990s. As the nation's measurement science agency, NIST plays a critical role in developing standards for quantum measurement, given that quantum effects set fundamental limits on physical measurement precision. NIST researchers have historically contributed essential building blocks to the industry, including the development of one of the first quantum logic gates and advancements in single-photon detectors and cryogenics.
Research Partnerships
NIST’s research often occurs through joint institutes, such as JILA—a partnership with the University of Colorado—and the Joint Quantum Institute and the Joint Center for Quantum Information and Computer Science, both held in partnership with the University of Maryland. The agency also manages the 'NIST on a Chip' program, which aims to transition quantum sensing and measurement science into industrial applications.
Security and Cryptography
As the industry matures, security has become a primary focus of federal research. NIST is currently leading the development of post-quantum cryptography, a vital effort to create encryption methods that can safeguard information against future quantum computers that possess the power to break current widely used codes. This work follows the launch of the National Quantum Initiative in 2018, which established a whole-of-government approach to quantum science.
