Date28th, Nov 2023

Summary:

A fundamental trade-off between the resolution of a clock and its accuracy could have important implications for quantum computers, which must measure short timescales accurately

Full text:

Physics

A fundamental trade-off between the resolution of a clock and its accuracy could have important implications for quantum computers, which must measure short timescales accurately

Quantum computers need to measure small units of time very accurately

FlashMovie/Getty Images

There is a fundamental trade-off between making a clock accurate and counting ever shorter ticks, due to the second law of thermodynamics. This trade-off could one day be important for clocks in quantum computers, where computing operations occur on extremely short timescales with high accuracy.

A common way of expressing the second law of thermodynamics is that the amount of disorder in a system (its entropy) must always increase over time. As a consequence of this increasing disorder, there is…

View introductory offers

No commitment, cancel anytime*

Offer ends 28th October 2023.

*Cancel anytime within 14 days of payment to receive a refund on unserved issues.

Inclusive of applicable taxes (VAT)

or

Existing subscribers

Sign in to your account

More from New Scientist

Explore the latest news, articles and features