A diagram to guide all of you particles out there find your own identity.
Last week, we hosted a CECAM Workshop on Nanophononics. The conference had the top speakers in the field from all around the world, as you can see in the program. The conference was also mentioned in the local newspaper. Here is a scan from the Weser Kurier of the article (in German).
The bizarre microscopic quantum world is exemplified by Schrödinger’s cat, where a quantum mechanical “cat” state is said to be both death and alive simultaneously. This non-classical state is called a quantum coherence. Coherence is at odds with macroscopic realism. Our experience is dominated by thermodynamics, which destroys quantum coherences at our length and time… Continue reading New Paper: Thermodynamics of quantum coherence
The espionage scandals in the news prompts us to revisit how physicists have been under surveillance by the US government, to sometimes hilarious results. During World War II, Niels Bohr (and his son) visited Washington D.C., where they were under secret surveillance. The following declassified report confirms the standard suspicion of quantum physics. I type… Continue reading The Boring World of Niels Bohr
Our paper: Vanishing quantum discord is not necessary for completely positive maps The description of the dynamics of a system that may be correlated with its environment is only meaningful within the context of a specific framework. Different frameworks rely upon different assumptions about the initial system-environment state. We reexamine the connections between complete positivity… Continue reading Paper: Vanishing quantum discord is not necessary for completely positive maps
I am one of the organizers for the CECAM Workshop on Nanophononics. It will take place here in Bremen this August, and promises to have all the most important researchers working on the control of phonon transport in the nanoscale. This is going to be an amazing conference. You can register here.
Our paper Positivity in the presence of initial system-environment correlation has been published in Physical Review A! The constraints imposed by the initial system-environment correlation can lead to nonpositive dynamical maps. We find the conditions for positivity and complete positivity of such dynamical maps by using the concept of an assignment map. Any initial system-environment… Continue reading Paper: Positivity in the presence of initial system-environment correlation