343 reputation
27
bio website cgranade.com
location
age 29
visits member for 4 years, 10 months
seen May 10 '14 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 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 completely positive and trace preserving (CPTP) maps?
Oct
29
asked Explicit construction for unitary extensions of completely positive and trace preserving (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.