Stanford team records first direct observation of quantum jumps of sound in mechanical resonator
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Quantum mechanics and phonon dynamics: a relevant GS3 Science & Technology topic.
Why in news
A Stanford University team led by Amir Safavi-Naeini recorded the first direct observation of quantum jumps of sound in a mechanical resonator, published in the journal Science.
Background
The team used a lithium niobate resonator and a superconducting qubit to observe phonons moving from energy state 1 to 0. The device vibrated for two milliseconds and achieved 85% fidelity for heralded single-phonon states.
Facts for Prelims
- S&TLithium niobate resonator: Used in the experiment to observe quantum jumps of sound.
- S&TSuperconducting qubit: Component used alongside the resonator to achieve 85% fidelity.
- Fact85% fidelity: The accuracy achieved for heralded single-phonon states.
- FactTwo milliseconds: The duration the device vibrated to detect phonons.
Prelims practice question
Which material was used as a resonator to observe the quantum jumps of sound?
- (a)Silicon carbide
- (b)Lithium niobate
- (c)Germanium
- (d)Gallium arsenide
Show answer
Answer: (b) Lithium niobate — The team used a lithium niobate resonator and a superconducting qubit to observe phonons moving from energy state 1 to 0.
For Mains
Q. Discuss the significance of quantum mechanics in the development of next-generation computing and sensing technologies.
Dimensions to cover in your answer
- Hardware scalability: Transitioning from superconducting qubits to mechanical resonators for stable quantum states
- Precision sensing: Enhanced fidelity in phonon detection for high-sensitivity acoustic sensors
Keywords: Quantum mechanics · Phonons · Lithium niobate · Superconducting qubits · Quantum jumps
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This note is generated automatically from SatyaDheesh's news feed and mapped to the UPSC CSE syllabus. Check facts against the original report or PIB before using them in an answer.