How Is Biology Informed By Quantum Physics? An Expert Explains
Sep 1, 2024
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Clarice D. Aiello, a quantum engineer and Assistant Professor at UCLA, dives into the intersection of quantum physics and biology. She explains how quantum behavior manifests in living systems, such as proteins and cells, and enhances our understanding of navigation in birds. The discussion reveals the significance of electron spin and superposition in quantum sensing, even in chaotic environments. Clarice also highlights the role of quantum effects in photosynthesis, showcasing how these principles could revolutionize our grasp of cellular functions.
Quantum sensors utilize superposition to enhance measurement capabilities, outperforming traditional instruments in sensing minute environmental changes.
Biological systems may exhibit quantum behavior, with molecular components like those in magnetoreception potentially functioning as quantum sensors despite environmental challenges.
Deep dives
Quantum Engineering and Sensing
Quantum engineers build instruments to study and control quantum-level phenomena, which differ significantly from classical mechanics. One key aspect of quantum sensors is their ability to utilize superposition, allowing them to exist in multiple states simultaneously, which enhances measurement capabilities. For example, electron spins can be in a superposition state, yielding improved sensitivity to external magnetic fields. This capability enables quantum sensors to outperform traditional instruments, particularly in measuring minute changes in their environment.
Quantum Behavior in Biological Systems
Biological systems, despite their warm and interactive environments, may also exhibit quantum behavior through quantum-like sensors found in nature. Research suggests that certain molecular components within organisms, such as those involved in magnetoreception in birds, function as quantum sensors, allowing them to detect the Earth's magnetic field even when disrupted by thermal noise. These systems can harness quantum effects for biological processes, but significant challenges remain in demonstrating this phenomenon unambiguously within complex organisms. The potential for quantum effects to influence biological functions presents an exciting avenue for exploration.
Evidence and Research Gaps
While there is correlative evidence supporting quantum-like behavior in biological systems, proving the mechanisms by which these quantum effects operate remains a challenge. Current research focuses on measuring specific parameters, such as electron spin states, to understand their functioning within single cells under native conditions. However, no definitive studies exist that confirm long-term maintenance of quantum states in living cells, highlighting a critical gap in quantum biology research. Establishing robust experimental frameworks will be essential for validating theorized quantum phenomena in biological contexts.
Integrating Quantum Physics and Biology
The integration of quantum concepts into biological research necessitates increased understanding and collaboration among physicists and biologists. By leveraging quantum mechanics, researchers can potentially unveil novel interactions and mechanisms fundamental to biological processes that have been overlooked in traditional chemical approaches. Developing quantum technologies that precisely manipulate biological systems could lead to breakthroughs in understanding how organisms respond to magnetic fields or other environmental factors. Promoting quantum literacy across disciplines may spur innovation and enrich the understanding of life processes through a quantum lens.
How does quantum physics inform biology at a nanoscale? In what ways does biology exhibit quantum behavior? Clarice D. Aiello, a quantum engineer and Assistant Professor at UCLA, sits down to enlighten us…
Clarice is an expert on nanosensors harnessing room-temperature quantum effects in noisy environments. With her research group, the Quantum Biology Tech (QuBiT) Lab, she performs quantum measurements on “living sensors” (such as proteins, cells, and microorganisms) to better understand how they interact with their environment.
In this episode, we cover:
What a quantum engineer is, and what they are trained to observe.
What makes quantum objects work very well with sensors.
What “spin” is, and what it tells us about the energy of electrons in a magnetic field.
How to see quantum behavior in biological systems.
What quantum-enhanced information is.
To find out more about Clarice and her work, click here now!