Quantum Computing Becomes Even More Important
- International Year of Quantum Science and Technology, the UN has declared as 2025.
- Quantum computing has made it a global race among government and private investments.
- From medicine to chemistry, AI, materials, to cryptography, these computers might be the key for change.
What Is a Quantum Chip?
- Quantum chips, on the contrary, allow qubits that can be in a superposition-both 0 and 1 at the same time, whereas the conventional computer is working with bits (0 or 1).
- There are different approaches to implementing qubits, for example, superconducting devices, semiconductors, and photonics.
- Key Players
- Superconducting qubits-IBM, Google, QueRa
- Semiconductor qubits-Intel, Diraq, SQC
- Photonic qubits-PsiQuantum, Xanadu
Qubit Quality vs. Quantity
- A large number of low-quality qubits will be worthless. What is needed for actual applications are high-fidelity qubits.
- Challenges
- Qubits are very susceptible to noise from the environment.
- Quantum error correction is necessary to enhance fidelity.
Research Advances in Quantum Error Correction
- Researchers have constructed “logical qubits” that use several imperfect qubits to cancel errors.
- New developments in quantum error correction will be unveiled in 2024 by Google, QueRa, IBM, and CSIRO.
- To date, only a few single logical qubits have been demonstrated successfully-the next challenge is to build a network of logical qubits.
Quantum Supremacy and Future Applications
- Quantum supremacy is defined as the point at which a quantum processor is performing better than classical ones.
- In late 2024, quantum supremacy was shown for a hard computational problem by Google’s Willow quantum chip.
- Envisaged future applications include:
- Medical breakthroughs: New drug discovery and understanding of genetic diseases.
- AI and Cybersecurity: Fortifying encryption mechanisms and making AI decision making better.
- Material Science: Creating advanced novel materials that have new properties.
What Is Happening in 2025?
- Expect the quantum chips to scale up to be able to accommodate logical qubits and allow for stable computation.
- Quantum software and algorithms will get developed whilst anticipating actual quantum applications.
- The field needs to push simultaneously in terms of hardware, fidelity, error correction, and algorithms.
This year 2025 is poised to mark a watershed moment in quantum computing, with predictions of breakthroughs being made in scalability, error correction, and applicable real-world uses.
The fully functioning quantum computer is still a distant goal, but the imminent preparations for it will build the foundation for tomorrow’s computers.
Source: The Hindu
