2025 Nobel Prize highlights macroscopic quantum tunneling with Josephson junctions; experiments reveal novel circuit behavior.

The 2025 physics Nobel Prize recognizes groundbreaking experiments involving macroscopic quantum tunneling and Josephson junctions. Researchers found key behaviors in circuits that could influence emerging technologies.

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The Hindu
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Sources: The Hindu
The 2025 Nobel Prize in Physics has been awarded to researchers who demonstrated macroscopic quantum tunneling through Josephson junctions, highlighting notable circuit behaviors.
Their experiments revealed that when a small current flows through these junctions, the paired electrons can be stalled, producing no voltage.

The laureates aimed to investigate whether the circuit's trapped state mimicked a quantum system, indicative of distinct energy levels characteristic of quantum mechanics.
These advancements in superconducting circuits are steering the intersection of quantum mechanics and technology, contributing to emerging tech like qubits for quantum computing.
Nobel Prize committees noted that such findings not only enhance our understanding of subatomic behavior but also extend to macroscopic systems, broadening the impact of quantum research beyond traditional realms.
Sources: The Hindu
The 2025 Nobel Prize in Physics honors researchers for revealing the effects of macroscopic quantum tunneling in Josephson junctions, demonstrating unique circuit behavior. Their groundbreaking experiments showed that superconducting circuits can exhibit quantum properties, crucial for technological advancements in this field.
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Key Facts
  • The 2025 physics Nobel Prize laureates showed that such behaviour can occur not only in subatomic particles but also in an electrical circuit made of superconductors.The Hindu
  • The fundamental unit of the award-winning experiments the trio conducted is a device called a Josephson junction.The Hindu
  • When the scientists sent a current through the Josephson junction, they found that if it was small enough, the flow of paired electrons was stalled and the circuit produced no voltage.The Hindu
  • The researchers also wanted to find out if the circuit’s trapped state behaved like a quantum system with distinct energy steps — a hallmark of a quantum state.The Hindu
  • Superconducting circuits that exploit macroscopic quantum effects are now central to several emerging technologies.The Hindu
The 2025 physics Nobel Prize laureates showed that such behaviour can occur not only in subatomic particles but also in an electrical circuit made of superconductors.
The Hindu
The Hindu
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