GK Question

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Which physical system is commonly used for implementing qubits in quantum computers?

  1. Superconducting circuits
  2. Trapped ions
  3. Photonic circuits
  4. All of these

Answer: All of these

Leading qubit implementations: superconducting (IBM, Google), trapped ions (IonQ), photonic (Xanadu). Each has trade-offs in coherence, scalability, error rates.

Topic Emerging Tech: Quantum Computing Review
Exam Relevance UPSC, Banking, SSC
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