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location Seattle, WA
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visits member for 2 years, 4 months
seen Nov 17 '12 at 18:50

I am a medical researcher and quantum systems engineer, whose experimental research interests focus upon quantum spin imaging and metrology, and whose theoretical interests focus upon large-scale quantum simulation, in overall service of advances in regenerative medicine.

For a non-technical overview of this research, see the (open-source) PNAS article "Spin Microscopy's Heritage, Achievements, and Prospects." For in-progress research see the Soldier Healing Seminar "Green Sheet Notes for 2013".

Quantum transport phenomena is a topic of particular interest, as efficiently simulated within frameworks in which large-dimension Hilbert-space gauge-field dynamics is emergent as the natural algebraic resolution of low-dimension varietal dynamics.


Aug
24
awarded  Yearling
Sep
24
awarded  Commentator
Sep
24
comment How did QED diverge from quantum mechanics mathematically?
The dynamical flow associated to the classical Bloch equations is Hamiltonian ... and yet there is no geometrically natural Lagrangian state-space potential (that is, no global singularity-free Lagrangian) associated to classical Bloch flows. Why should quantum Hamiltonian flows be any different? That is why spin degrees of freedom appear in path-integral formulations of quantum field theory in, as Feynman says in his 1948 article, "a purely formal way"--nowadays expressed in terms of Grassmanian variables--that, in Feynman's phrasing, "adds nothing to the understanding of these equations."
Sep
20
comment A good example of a nonlinear symplectomorphism?
The Bloch equations, viewed as a Hamiltonian flow on $S^2$. The symplectomorphism is rotation of the Bloch sphere.
Sep
16
revised Reversing gravitational decoherence
Reference to Lee and Blau
Sep
11
revised Reversing gravitational decoherence
Link to TCS StackExchange question "Physical realization of nonlinear operators for quantum computers"
Sep
9
revised An example of non-Hamiltonian systems
Proof that the dynamics of the Chaplygin sleigh are non-Hamiltonian.
Sep
5
answered If I go to the church of the greater Hilbert space, can I have Unitary Collapse?
Sep
4
revised Reversing gravitational decoherence
Heat capacity amended from "extensive" to "intensize' Doh!
Aug
31
awarded  Announcer
Aug
31
answered Tensor product decomposition of SU(2)
Aug
31
revised Reversing gravitational decoherence
Further pedagogic expansion, associated to the Godel's Lost Letter Kalai/Harrow debate
Aug
31
revised Reversing gravitational decoherence
substantial prose smoothing, preparatory to concluding the Harrow/Kalai debate
Aug
31
revised Reversing gravitational decoherence
smoother prose, preparing for future reference in the Gil Kalia/Aram Harrow debate
Aug
31
revised Reversing gravitational decoherence
smoother prose, preparing for future reference in the Gil Kalia/Aram Harrow debate
Aug
31
revised Reversing gravitational decoherence
smoother prose, preparing for future reference in the Gil Kalia/Aram Harrow debate
Aug
30
revised Reversing gravitational decoherence
tuned-up discussion of the partition function
Aug
30
revised Reversing gravitational decoherence
Description of the proper accounting of observation dynamics
Aug
30
revised Reversing gravitational decoherence
Clarification of quantum feedback in Onsager's theory, and link to Godel's Lost Letter
Aug
30
revised Reversing gravitational decoherence
Link to Godel's Lost Letter