Quantum Information Science and Technology
Summary
Quantum Information Science and Technology harnesses the fundamental principles of quantum mechanics—superposition, entanglement and coherence—to process and transmit information in ways that transcend classical limits. Central to this endeavour are quantum bits or qubits, which exist in a coherent combination of states and can be entangled across distances. These properties underpin quantum communication protocols promising unconditionally secure data exchange, quantum algorithms offering exponential speed-ups for specific computational tasks, advanced quantum sensors that reach unprecedented precision, and quantum simulators capable of modelling complex materials and molecules. Over the past decade, experimental progress in superconducting circuits, trapped ions and photonic platforms has rapidly advanced system scale and stability. At the same time, theoretical developments continue to refine error-correction schemes and network architectures, setting the stage for robust quantum networks and fault-tolerant quantum computers. The field is highly interdisciplinary, intersecting physics, computer science, materials science and engineering, and carries transformative potential for secure communications, optimisation, drug discovery, and metrology.
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Quantum Information Science and Technology publication trend
The graph below shows the total number of articles in quantum information science and technology across all publications each year (not limited to Nature Index journals).
Technical terms
Qubit: Quantum analogue of a classical bit, capable of existing in a superposition of 0 and 1 states.
Superposition: Quantum property allowing a system to occupy multiple states simultaneously until measured.
Entanglement: Non-classical correlation between quantum systems that links their properties regardless of separation.
Decoherence: Process by which quantum systems lose coherence through interactions with their environment, leading to classical behaviour.
Quantum-safe cryptography: Cryptographic techniques designed to resist decryption by quantum computers.
References
- Emergence and control of complex behaviors in driven systems of interacting qubits with dissipation. npj Quantum Information (2021).
- Realizing quantum-safe information sharing: Implementation and adoption challenges and policy recommendations for quantum-safe transitions. Government Information Quarterly (2024).
- The quantum technologies roadmap: a European community view. New Journal of Physics (2018).
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