1,431 reputation
623
bio website jessriedel.com
location Waterloo, ON, Canada
age 29
visits member for 3 years, 5 months
seen Jul 30 at 14:57

Physics postdoc at the Perimeter Institute. Interested in quantum information, consistent histories set selection, decoherence, and classically undetectable soft-particle detection.

Previous postdoc at IBM Research with Charlie Bennett. UCSB Physics Ph.D. 2012 (advisor: Wojciech Zurek). Princeton Physics B.A. 2007. TJHSST 2003.

http://www.jessriedel.com


Jun
19
comment What is discrete phase space?
The continuous Wigner function is just the Fourier transform of the position-space density matrix after changing coordinates to ($\bar{x}$,$\Delta x$). [Equivalently, the momentum-space density matrix in coordinates ($\bar{p}$,$\Delta p$).] Therefore, I think there should be a semi-discrete Wigner function when the configuration variable $x$ is continuous but bounded (so $p$ is discrete and unbounded) and fully discrete Wigner function when $x$ is discrete and bounded (and $p$ is also discrete and bounded).
Jun
19
comment What is discrete phase space?
Thanks very much for going to the trouble to write this down. I'm still trying to understand it. I wonder if maybe you've been too quick to dismiss the possibility that (some) discrete Wigner functions correspond to a dynamical system with discrete quantum state?
Jun
4
comment Question about canonical transformation
Are there good reasons to understand and use transformations that are locally canonical but not canonical?
May
12
comment How to calculate material depth at which penetrating radiation direction becomes randomized?
Theory of course. Using numerical codes for this would be like using an N body simulation for a single orbit.
May
12
revised How to calculate material depth at which penetrating radiation direction becomes randomized?
added 207 characters in body
May
12
asked How to calculate material depth at which penetrating radiation direction becomes randomized?
May
5
awarded  Enlightened
May
4
comment What are some critiques of Jaynes' approach to statistical mechanics?
I can strongly recommend section 6 of David Wallace's "The logic of the past hypothesis" for clear and convincing criticism of some of Jayne's approach. philsci-archive.pitt.edu/8894
May
4
awarded  Nice Answer
May
4
answered Why does Planck's constant appear in classical statistical mechanics
May
2
asked What is the correct terminology for a “symplectic covariant” equation?
Feb
28
awarded  Yearling
Nov
26
revised What is the largest number of bosons placed in a BEC?
added 283 characters in body
Nov
26
revised What is the largest number of bosons placed in a BEC?
Added another cite
Nov
25
comment What is the largest number of bosons placed in a BEC?
Do you mean Streed et al. is likely to be the highest atomic BEC? How high do you expect for quasi-particles, and who should I look at?
Nov
25
revised What is the largest number of bosons placed in a BEC?
added 186 characters in body
Nov
25
comment What is the largest number of bosons placed in a BEC?
I am pretty sure they are in number eigenstates for massive bosons like atoms. That's not even super important though, as coherent States are strongly peaked around a certain number for large N.
Nov
25
asked What is the largest number of bosons placed in a BEC?
Nov
23
revised Is there non-trivial multipartite entanglement not witnessed by the spectra of reduced states?
added 220 characters in body
Nov
23
revised Is there non-trivial multipartite entanglement not witnessed by the spectra of reduced states?
Added picture