Sample interview questions: Describe your understanding of quantum computing architectures and their trade-offs.
Sample answer:
Understanding Quantum Computing Architectures and Trade-offs
Quantum computing architectures offer diverse approaches to harnessing the potential of quantum mechanics for computation. Each architecture comes with unique advantages and trade-offs, influencing its suitability for specific applications.
-
Superconducting Qubits:
-
Advantages:
- Long coherence times
- High-fidelity quantum operations
- Well-established fabrication techniques
-
Trade-offs:
- Large physical footprint
- High operating temperatures (requiring cryogenic cooling)
- Limited scalability
-
Trapped Ions:
-
Advantages:
- Excellent isolation and control
- High gate fidelity
- Long-distance entanglement capabilities
-
Trade-offs:
- Complex experimental setup
- Limited scalability due to ion-ion interactions
- Sensitive to external noise
-
Photonic Qubits:
-
Advantages:
- High-speed operations
- Long-distance quantum communication
- Potential for large-scale integration
-
Trade-offs:
- Relatively short coherence times
- Susceptibility to photon loss
- Challenges in manipulating and encoding quantum information
-
Spin Qubits:
-
Advantages:
- Long coherence time… Read full answer