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Title: Sustained quantum coherence and entanglement in the avian compass
Authors: Gauger, E.M.
Rieper, E.
Morton, J.J.L.
Benjamin, S.C. 
Vedral, V. 
Issue Date: 25-Jan-2011
Citation: Gauger, E.M., Rieper, E., Morton, J.J.L., Benjamin, S.C., Vedral, V. (2011-01-25). Sustained quantum coherence and entanglement in the avian compass. Physical Review Letters 106 (4) : -. ScholarBank@NUS Repository.
Abstract: In artificial systems, quantum superposition and entanglement typically decay rapidly unless cryogenic temperatures are used. Could life have evolved to exploit such delicate phenomena? Certain migratory birds have the ability to sense very subtle variations in Earth's magnetic field. Here we apply quantum information theory and the widely accepted "radical pair" model to analyze recent experimental observations of the avian compass. We find that superposition and entanglement are sustained in this living system for at least tens of microseconds, exceeding the durations achieved in the best comparable man-made molecular systems. This conclusion is starkly at variance with the view that life is too "warm and wet" for such quantum phenomena to endure. © 2011 American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.106.040503
Appears in Collections:Staff Publications

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