338 reputation
27
bio website cgranade.com
location
age 29
visits member for 3 years, 11 months
seen May 10 at 19:54

PhD student in quantum information at the Institute for Quantum Computing in Waterloo, Ontario.


Sep
24
awarded  Autobiographer
Apr
2
awarded  Enlightened
Apr
2
awarded  Nice Answer
May
4
awarded  Yearling
May
4
awarded  Student
May
4
awarded  Scholar
May
4
awarded  Nice Question
Feb
1
answered Quantum information science references
Jan
26
comment Time reversal symmetry and T^2 = -1
Kramer's Theorem and the issue of antiunitary time reversal symmetries are both dealt with in some detail by the first chapter of Haake‌​, for those interested in reading more on the subject.
Jan
25
answered Solution to the Schrodinger equation for periodically time dependent Hamiltonians
Nov
3
answered How is partial trace simplified?
Nov
1
comment Decoherence and measurement in NMR
@JoeFitzsimons: I think of a low-quality coil as coupling to the sample more weakly. Maybe not the right intuition, but I find it at least somewhat helpful...
Nov
1
accepted Explicit construction for unitary extensions of CPTP maps?
Oct
29
asked Explicit construction for unitary extensions of CPTP maps?
Nov
5
awarded  Supporter
Nov
4
comment Fourier transformation in nature/natural physics?
To elaborate on the diffraction grating part, once you have the 2D Fourier transform of a beam by passing it through a grating, you can chop off parts of the transformed beam and pass it through a second grating to filter out parts of the spectrum of the beam. I saw this done once by using an old 35mm slide as a diffraction grating for a laser beam, and you could make details on the slide go away by chopping off the high-frequency components of the transformed beam.
Nov
3
awarded  Teacher
Nov
3
answered What is the difference between a measurement and any other interaction in quantum mechanics?
Nov
3
comment What is the difference between a measurement and any other interaction in quantum mechanics?
I strongly disagree that physicists don't care. The whole field of of quantum foundations is based on trying to answer this and other questions about quantum mechanics. QF is a rich field of study that gives us clues as to what the next theory should look like and how we should expect to go about finding it.