Quantum discovery: reading time consumes more energy than running the clock

Observing time in the quantum world

A new study in quantum physics reveals a paradoxical discovery: measuring time at a quantum scale consumes more energy than letting it flow naturally. Researchers found that while a quantum clock runs with relatively low energy, the act of observing or reading that time requires much higher energy costs.

The energy-time relationship

In classical mechanics, energy changes predictably with time. But in quantum mechanics, observing a system changes its state. The act of reading a quantum clock forces the system to interact with its measurement device, leading to energy expenditure beyond what’s needed to run the clock itself.

"Reading time in the quantum realm disturbs the system," explain the researchers. "This disturbance carries an energy cost that surpasses the clock’s operational needs."

The findings deepen understanding of time measurement in quantum systems, which could influence the way scientists design future quantum technologies, including ultra-precise sensors and quantum computers.

Broader implications

This study highlights that information, energy, and measurement are intertwined at the smallest scales. In quantum reality, knowing something can cost more energy than making it happen — a profound shift from classical intuition.

Author’s summary: Quantum physicists found that measuring time itself in a quantum system demands more energy than keeping the system running, redefining the link between observation and energy.

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Techno-Science.net Techno-Science.net — 2025-11-28

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