Coherence
BeginnerCoherence is a qubit's ability to reliably maintain its quantum state, like superposition or entanglement, over time before being disrupted by environmental noise.
In Plain English
Imagine a perfectly spinning top. Coherence is the time it spins stably and predictably. As soon as it starts to wobble from a breeze or a bump (environmental noise), it loses its perfect state. This wobbling is like a qubit losing its coherence.
Why It Matters for Your Career
Quantum Hardware Engineers at companies like Rigetti, IBM Quantum, or IonQ are judged by their ability to increase qubit coherence times. During interviews, expect questions on how different qubit modalities address the fundamental challenge of maintaining coherence.
Related Terms
Jobs Requiring Coherence
Fabrication R&D Scientist, Amazon Center for Quantum Computing
Amazon Web Services (AWS)
Computational research engineer in Quantum Sciences
scaleiq
Quantum Superconducting Interconnect Integration Engineer
GlobalFoundries · $118K - $210K
Quantum Superconducting Interconnect Integration Engineer
GLOBALFOUNDRIES US Inc.
Quantum Sensing / Engineering & Physical Sciences Researcher - Mid to Experienced Level (MD
US National Security Agency/Central Security Service · $105K - $193K
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