Note4Students
From UPSC perspective, the following things are important :
Prelims level: Quantum Non-Locality
Why in the News?
A recent study published in Physical Review Letters by Indian researchers has revealed that a universal standard for measuring quantum non-locality is impossible.
What is Quantum Nonlocality?
- Quantum Nonlocality is a mysterious connection between distant objects that challenges the classical idea of local realism, where no faster-than-light communication is allowed.
- It’s crucial for technologies like secure communication, random number generation, and cryptographic key creation.
- Easy Explanation:
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- Imagine two particles that are created together and then move far apart, even to opposite ends of the universe.
- In classical physics, any effect on one particle would need a signal to travel to the other, taking time.
- But in quantum physics, Quantum Nonlocality means these particles are instantly connected, affecting each other no matter the distance, as if linked by an invisible thread that works faster than light.
Historical Background: Bell’s Theorem (1964)
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Recent Research and Findings
- The research demonstrates that a universal standard for measuring and comparing quantum nonlocality is impossible.
- It shows that the nature of nonlocality varies based on the type of correlation, with infinite unique points on the correlation boundary.
- There is no single, universal resource in the realm of quantum nonlocality; instead, each nonlocal resource is unique, capable of performing specific tasks that others cannot.
- This observation plays a key role in secure communication, random number certification, and cryptographic key generation.
PYQ:[2022] Which one of the following is the context in which the term “qubit” is mentioned? (a) Cloud Services (b) Quantum Computing (c) Visible Light Communication Technologies (d) Wireless Communication Technologies |
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