Magnetosensitivity of tightly bound radical pairs in cryptochrome is enabled by the quantum Zeno effect DOI Creative Commons
Matt C. J. Denton, Luke D. Smith,

Wencan Xu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 30, 2024

The radical pair mechanism accounts for the magnetic field sensitivity of a large class chemical reactions and is hypothesised to underpin numerous magnetosensitive traits in biology, including avian compass. Traditionally, this attributed pairs with weakly interacting, well-separated electrons; closely bound were considered unresponsive weak fields due arrested spin dynamics. In study, we challenge view by examining FAD-superoxide within cryptochrome, protein function as biological magnetosensor. Contrary expectations, find that tightly can respond Earth-strength fields, provided recombination reaction strongly asymmetric-a scenario invoking quantum Zeno effect. These findings present plausible effects suggesting even associated pairs, like those involving superoxide, may play role sensing.

Language: Английский

A near-term quantum simulation of the transverse field Ising model hints at glassy dynamics DOI Creative Commons
Shah Ishmam Mohtashim, Arnav Das, Turbasu Chatterjee

et al.

The European Physical Journal Special Topics, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Language: Английский

Citations

1
Magnetosensitivity of tightly bound radical pairs in cryptochrome is enabled by the quantum Zeno effect DOI Creative Commons
Matt C. J. Denton, Luke D. Smith,

Wencan Xu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 30, 2024

The radical pair mechanism accounts for the magnetic field sensitivity of a large class chemical reactions and is hypothesised to underpin numerous magnetosensitive traits in biology, including avian compass. Traditionally, this attributed pairs with weakly interacting, well-separated electrons; closely bound were considered unresponsive weak fields due arrested spin dynamics. In study, we challenge view by examining FAD-superoxide within cryptochrome, protein function as biological magnetosensor. Contrary expectations, find that tightly can respond Earth-strength fields, provided recombination reaction strongly asymmetric-a scenario invoking quantum Zeno effect. These findings present plausible effects suggesting even associated pairs, like those involving superoxide, may play role sensing.

Language: Английский

Citations

0