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Center for Excitonics Seminar Series
Excitonic Quantum Random Walk in Biological Phycocyanin Nanowires
October 6, 2015 at 4:30pm/ 36-428
Yossi Paltiel
Department of Applied Physics, The Hebrew University of Jerusalem
[cid:image001.jpg@01D0FAB3.C20657F0]
The importance of quantum processes in biology is starting to be recognized. Quantum
processes are being discussed in the context of enzyme function, olfaction, magnetic
sensing and most prominently in photosynthetic light-harvesting complexes. These findings
suggest that a key to the survival of quantum coherence at ambient temperatures is the
interplay between long-lived vibrational modes and the electronic degrees of freedom that
can lead to coherent effects. This coherence can explain the high yield of photosynthetic
exciton transfer. Furthermore, it is fair to say that no device made by man so far has
made use of all these properties at the same time.
Our aim is to develop a new class of quantum coherent devices. This can be achieved by
understanding the underlying mechanisms driving photosynthetic processes with efficient
long range energy transfer and harness this knowledge to advance innovative quantum
technologies. Utilizing light harvesting complexes we were able to fabricate
self-assembled nano-energy guides. We used isolated Phycocyanin (PC) proteins that can
self-assemble into bundles of nanowires. We show two methods for controlling the
organization of the bundles. The optically excited nanowires exhibit long range quantum
energy transfer through hundreds of proteins. Such results may provide new building blocks
for coherent based nano-devices. In vivo desert adapted cyanobacteria seems to use the
same organization for efficient energy removal. The suggested results open many questions
regarding the distribution and the efficiency of energy transfer mechanisms in biological
systems.
Professor Yossi Paltiel has worked in both leading high-tech industry groups and in the
academic world. Since July 2009, he's been leading the Quantum Nano Engineering
group at the Hebrew University, Israel and is currently chair of the Applied Physics
department. Paltiel's group's goal is to establish a way to incorporate quantum
mechanics into room temperature "classical" computation and reading schemes.
This will provide quantum coherence control at nanometer scale distances, while
maintaining the physical characteristics of currently available computer input-output
devices. He has published more than 70 papers in leading journals and has issued 10
patents. In 2013, he co-founded, Valentis Nanotech, a start-up company that combines nano
particles with CNC (cellulose nano crystals) a biodegradable, transparent material made
from plant pulp waste to produce a functional material, tailored to each industry
according to its needs.
Light refreshments will be served
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Please post and forward to your groups
Center for Excitonics Seminar Series
Excitonic Quantum Random Walk in Biological Phycocyanin Nanowires
October 6, 2015 at 4:30pm/ 36-428
Yossi Paltiel
Department of Applied Physics, The Hebrew University of Jerusalem
[cid:image001.jpg@01D0FAB3.C20657F0]
The importance of quantum processes in biology is starting to be recognized. Quantum
processes are being discussed in the context of enzyme function, olfaction, magnetic
sensing and most prominently in photosynthetic light-harvesting complexes. These findings
suggest that a key to the survival of quantum coherence at ambient temperatures is the
interplay between long-lived vibrational modes and the electronic degrees of freedom that
can lead to coherent effects. This coherence can explain the high yield of photosynthetic
exciton transfer. Furthermore, it is fair to say that no device made by man so far has
made use of all these properties at the same time.
Our aim is to develop a new class of quantum coherent devices. This can be achieved by
understanding the underlying mechanisms driving photosynthetic processes with efficient
long range energy transfer and harness this knowledge to advance innovative quantum
technologies. Utilizing light harvesting complexes we were able to fabricate
self-assembled nano-energy guides. We used isolated Phycocyanin (PC) proteins that can
self-assemble into bundles of nanowires. We show two methods for controlling the
organization of the bundles. The optically excited nanowires exhibit long range quantum
energy transfer through hundreds of proteins. Such results may provide new building blocks
for coherent based nano-devices. In vivo desert adapted cyanobacteria seems to use the
same organization for efficient energy removal. The suggested results open many questions
regarding the distribution and the efficiency of energy transfer mechanisms in biological
systems.
Professor Yossi Paltiel has worked in both leading high-tech industry groups and in the
academic world. Since July 2009, he's been leading the Quantum Nano Engineering
group at the Hebrew University, Israel and is currently chair of the Applied Physics
department. Paltiel's group's goal is to establish a way to incorporate quantum
mechanics into room temperature "classical" computation and reading schemes.
This will provide quantum coherence control at nanometer scale distances, while
maintaining the physical characteristics of currently available computer input-output
devices. He has published more than 70 papers in leading journals and has issued 10
patents. In 2013, he co-founded, Valentis Nanotech, a start-up company that combines nano
particles with CNC (cellulose nano crystals) a biodegradable, transparent material made
from plant pulp waste to produce a functional material, tailored to each industry
according to its needs.
Light refreshments will be served
TODAY
----------------------------------------------
Center for Excitonics Seminar Series
Excitonic Quantum Random Walk in Biological Phycocyanin Nanowires
October 6, 2015 at 4:30pm/ 36-428
Yossi Paltiel
Department of Applied Physics, The Hebrew University of Jerusalem
[cid:image001.jpg@01D0FAB3.C20657F0]
The importance of quantum processes in biology is starting to be recognized. Quantum
processes are being discussed in the context of enzyme function, olfaction, magnetic
sensing and most prominently in photosynthetic light-harvesting complexes. These findings
suggest that a key to the survival of quantum coherence at ambient temperatures is the
interplay between long-lived vibrational modes and the electronic degrees of freedom that
can lead to coherent effects. This coherence can explain the high yield of photosynthetic
exciton transfer. Furthermore, it is fair to say that no device made by man so far has
made use of all these properties at the same time.
Our aim is to develop a new class of quantum coherent devices. This can be achieved by
understanding the underlying mechanisms driving photosynthetic processes with efficient
long range energy transfer and harness this knowledge to advance innovative quantum
technologies. Utilizing light harvesting complexes we were able to fabricate
self-assembled nano-energy guides. We used isolated Phycocyanin (PC) proteins that can
self-assemble into bundles of nanowires. We show two methods for controlling the
organization of the bundles. The optically excited nanowires exhibit long range quantum
energy transfer through hundreds of proteins. Such results may provide new building blocks
for coherent based nano-devices. In vivo desert adapted cyanobacteria seems to use the
same organization for efficient energy removal. The suggested results open many questions
regarding the distribution and the efficiency of energy transfer mechanisms in biological
systems.
Professor Yossi Paltiel has worked in both leading high-tech industry groups and in the
academic world. Since July 2009, he's been leading the Quantum Nano Engineering
group at the Hebrew University, Israel and is currently chair of the Applied Physics
department. Paltiel's group's goal is to establish a way to incorporate quantum
mechanics into room temperature "classical" computation and reading schemes.
This will provide quantum coherence control at nanometer scale distances, while
maintaining the physical characteristics of currently available computer input-output
devices. He has published more than 70 papers in leading journals and has issued 10
patents. In 2013, he co-founded, Valentis Nanotech, a start-up company that combines nano
particles with CNC (cellulose nano crystals) a biodegradable, transparent material made
from plant pulp waste to produce a functional material, tailored to each industry
according to its needs.
Light refreshments will be served