NTT laboratories have been engaged in basic research on various quantum-related technologies, including quantum information, since the mid-1980s before research on quantum computers took off.The Feature Articles in this issue present the latest global trends in quantum technology and NTT's research portfolio regarding quantum technology.In addition to quantum computing, quantum sensing and quantum networks are also extensively discussed from both experimental and theoretical perspectives.
NTT laboratories have been engaged in basic research on various quantum-related technologies, including quantum information, since the mid-1980s before research on quantum computers took off.The Feature Articles in this issue present the latest global trends in quantum technology and NTT's research portfolio regarding quantum technology.In addition to quantum computing, quantum sensing and quantum networks are also extensively discussed from both experimental and theoretical perspectives.
The quantum nature of light provides us with a novel technology for information processing and communication that is based on the principle of quantum mechanics.The Optical Science Laboratory of NTT Basic Research Laboratories has been engaged in investigating photonic quantum information processing, which involves quantum cryptography and quantum computing.These Feature Articles present the current status of our research activities involving quantum optical state control and the underlying lightmatter interaction.
In order to make quantum information science applicable to the real world, it is necessary to change direction to focus on engineering technology based on quantum communication theory. Consequently, we can expect the following abilities: the possibilities of ultrahigh-speed optical communication, the feasibility of all-weather sensors, and enhancing the security of the physical layer of current optical networks. In addition, clarifying decoherence properties of quantum processors in the sense of noise analysis is important for real applications of quantum technology. The aim of Special Issue was to consolidate and publish the latest research trends by researchers who are conducting research toward the above goals.
Over the past century, quantum theory has taken flight from conceptual breakthroughs, such as wave–particle duality, quantisation of energy, and the uncertainty principle, to practical tools that are the backbone of modern electronics, lasers, semiconductors, and precision measurement systems. In the twenty-first century, this progress under the regime of the second quantum revolution has acquired the ability to directly control, manipulate, and engineer individual quantum systems. Quantum technologies found their pillars in quantum properties, such as superposition, entanglement, and coherence and have exceeded the boundaries of classical physics. The steady theoretical advances, combined with experimental progress, have brought quantum concepts closer to real-life use. Significant progress has made in filed of computation, communication, sensing, navigation, medicine, cyber security, and national defense undr the guidance of quantum technology. This book chapter presents a comprehensive and pedagogical overview of quantum technologies. It highlights quantum computing, quantum communication, and quantum sensing and metrology. The shift of quantum mechanics into practical applications is discussed. Current research trends are reviewed alongside the technological and engineering challenges. The critical issues, such as decoherence, scalability, error correction, standardisation, and workforce development, are discussed, which further highlights the need for global collaboration. Both National governments and the private sector are investing heavily in quantum research. This will act as a booster for quantum technologies to revolutionise information processing, secure communications, and precision measurements. Consequently and will significantly impact the scientific and technological landscape.
Over the past century, quantum theory has taken flight from conceptual breakthroughs, such as wave–particle duality, quantisation of energy, and the uncertainty principle, to practical tools that are the backbone of modern electronics, lasers, semiconductors, and precision measurement systems. In the twenty-first century, this progress under the regime of the second quantum revolution has acquired the ability to directly control, manipulate, and engineer individual quantum systems.Quantum technologies found their pillars in quantum properties, such as superposition, entanglement, and coherence and have exceeded the boundaries of classical physics. The steady theoretical advances, combined with experimental progress, have brought quantum concepts closer to real-life use. Significant progress has made in filed of computation, communication, sensing, navigation, medicine, cyber security, and national defense undr the guidance of quantum technology.This book chapter presents a comprehensive and pedagogical overview of quantum technologies. It highlights quantum computing, quantum communication, and quantum sensing and metrology. The shift of quantum mechanics into practical applications is discussed. Current research trends are reviewed alongside the technological and engineering challenges. The critical issues, such as decoherence, scalability, error correction, standardisation, and workforce development, are discussed, which further highlights the need for global collaboration. Both National governments and the private sector are investing heavily in quantum research. This will act as a booster for quantum technologies to revolutionise information processing, secure communications, and precision measurements. Consequently and will significantly impact the scientific and technological landscape.