1,997 reputation
420
bio website scholar.google.com/…
location Hannover, Germany
age 25
visits member for 1 year, 10 months
seen Aug 16 at 18:26

Ph.D. student in theoretical quantum optics. I currently investigate protocols for conversion of quantum states of microwave and optical fields using nanomechanical systems.


Jun
25
answered Problem in Grandfather paradox
Jun
17
reviewed Reviewed Recovering all of Maxwell's equations from the variational principle
Jun
12
reviewed No Action Needed Clocks in special relativity
Jun
11
reviewed Reviewed average speed and velocity
May
28
comment In terms of covariance matrices, are partial measurement and partial trace equivalent?
@JessRiedel There are some excellent papers on the topic of general completely positive transformations of Gaussian states, see, e.g., this one or this one. Hope that helps!
May
26
awarded  Revival
May
25
comment Is there an inconsistency between Quantum and Classic in probability density of harmonic oscillator ground state?
The problem with ground state (both quantum and classical) is that it is the state with minimum energy. In the classical regime that means no oscillation and, therefore, position at the equillibrium. The quantum ground state then represents smearing of this equilibrium and one has to look at excited quantum states if one wants to compare that to classical oscillations.
May
24
reviewed No Action Needed Would my fridge magnet drop off on a non-magnetic planet?
May
23
awarded  Student
May
21
comment Quantum entropy in term of density matrix
It is not entirely true that the off-diagonal terms don't play a role - there is the logarithm of the density matrix which is not given just by the diagonal terms - either you need to diagonalize the density matrix before taking the logarithm, or you express the logarithm by its Taylor expansion. And then, the off-diagonal terms come into play.
Mar
7
reviewed Reviewed Object that causes spacetime to expand?
Feb
18
reviewed No Action Needed If you could ride an elevator through the earth
Jan
27
awarded  Nice Answer
Jan
21
reviewed No Action Needed How does Newtonian mechanics explain why orbiting objects do not fall to the object they are orbiting?
Jan
6
awarded  Reviewer
Jan
6
reviewed Reviewed A question once confused Confucius
Jan
6
reviewed Reviewed Is black a color or absence of color?
Jan
3
reviewed Reviewed Electromagnet emitting light
Dec
31
reviewed No Action Needed Center of mass and gravitational force
Dec
30
reviewed No Action Needed Is using water in a charcoal smoker less efficient than not using water?