Are Qubits Fundamentally Flawed for General-purpose Quantum Computing?

Journals Invention

C. H. Wu

The fundamental flaws of qubit concept for general-purpose quantum computing are elaborated here. We show that from implementing of the addition operation of two bits, only four symbolic substitution rules are needed. Superposition of four states from the two qub its is then irrelevant for the addition operation of two bits. The fundamental quantum processor needed is further described here against the quib it concept. The quantum Turing Machine is thus settled in the cellular automata architecture. Therefore, quantum computing must be rule-based, rather than logic-gate based.

Dagmar Bruß, ARTUR K. EKERT, Susana F. Huelga +2 more

Samuel L. Braunstein, Arun Kumar Pati

Cheng Hsiao Wu

Nonlocal Quantum Computing Theory offers a fresh perspective on quantum computing, moving beyond the traditional qubit-based approach to a physics-driven interpretation of computation. This book highlights the limitations and logical flaws in mainstream quantum computing theories and introduces a rule-based, nonlocal quantum computing framework. Covering general-purpose quantum computing, biological applications, and atomic chains in full superposition and entanglement, this book presents a bold new theoretical foundation for the field. Key Features: Provides a comprehensive introduction to quantum computing from a nonlocal perspective. Critically examines the limitations of the standard qubit-based approach. Explores applications in biological systems and atomic chain computations. Introduces rule-based nonlocal quantum computing theory as an alternative framework. Includes a historical overview and discussion of quantum parallelism. This book is an essential resource for graduate students in physics and computer science, as well as researchers and professionals engaged in quantum information theory and quantum computing. Its innovative approach contributes to ongoing discussions in the field, making it valuable for those seeking a deeper understanding of the foundations and future of quantum computation.

Mercedes Gimeno-Segovia

General purpose quantum computers require millions of physical qubits, thus requiring an underlying qubit technology that can be manufactured at scale. Photons make great qubits, they are cheap to produce, resilient to noise and the only known option for quantum communication. Most crucially, they can be efficiently manipulated with silicon photonics, an intrinsically scalable and manufacturable platform in which all the fundamental quantum gates can be implemented.