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Programmes Quantum Technology

Oxford Martin Programme on Bio-Inspired Quantum Technologies

What are we doing?
We aim to develop a completely new methodology for overcoming the extreme fragility of quantum memory. By learning how biological molecules shield fragile quantum states from the environment, we hope to create the building blocks of future quantum computers.

Why is it important?
This new approach could lead to the first quantum computer with a large enough memory to make it useful beyond laboratories. Such a computer would process information faster than classical computers, but more importantly, it would be capable of modelling systems, such as climate models or physiological function, which are too challenging for today’s supercomputers.

How are we different?
Most current approaches build quantum memory by adding quantum bits, one by one, from the bottom up. Our radical new approach offers a top-down perspective from biology, whereby we learn from nature how large complex systems such as biomolecules achieve quantum coherence before we replicate their properties in sub-units.

Projects

Searching for Quantum Coherence

Experimental objectives include searching for quantum coherence in biomolecules (such as proteins) using multidimensional spectroscopy, then designing and fabricating biomimetic hybrid systems comprising artificial and biological parts. The project also aims aim to measure spin coherence in molecules responsible for magneto-reception. This quantum effect is thought to guide birds during migration, and now that the molecules responsible for magneto-reception discovered in Drosophila flies, the field has been opened up to experiments impossible to carry out using birds.

Designing building blocks for future quantum computers: aims to learn and copy how large biological systems shield quantum coherence, which will allow us to derive the design principles for the building blocks of future quantum technologies such as quantum computers. We will focus on two kinds of systems. The first is biological molecules (e.g. protein complexes), and the second is biomimetic systems (that is, systems that copy the architecture or function of biological systems). The latter kind can be made of fully artificial (e.g. carbon structures such as modified ‘bucky balls’) or hybrid materials that comprise biological parts and artificial materials (e.g. quantum dots spliced into networks of DNA strands). We have pooled our laboratory resources and expertise between the research strands to leverage Oxford's resources and expertise and to cut out duplication.

Biomimetics – simulating living systems with non-living matter
Biological systems are incredibly complex and there is much to learn from testing basic predictions in simpler artificial systems that capture and simulate the essential features of biomolecules. One objective is to replicate highly efficient energy transport in networked structures inspired by the light harvesting protein found in photosynthetic organisms. An energy efficient ‘artificial leaf’ could be realised by intercalating fluorescent quantum dots or dyes in DNA strands or organic polymers. Quantum coherent transport would be achieved by coupling the dots through fluorescence and absorption, or possibly through exciton transport in the DNA strands or polymers. Devices will be fabricated and characterized to test coherent exciton transport on a macroscopic scale of several microns. This would be a major advance towards building and fabricating more sophisticated quantum wire networks with direct applications for efficient quantum information circuits or energy harvesting.