Asaf Paris Mandoki wrote:
Hi,
The website is http://code.google.com/p/openket/ although is
outdated. I am attaching the most recent version together with a
couple of examples.
I guess that we can get rid of most of the code by taking advantage of
sympy. I also believe we can improve the API and have a more general
implementation of operators.
I started working on the sympy version (attached as t.py) and created
a special kind of multiplication to handle inner product and operator
evaluation. I'm not sure if it's the best way to do it and also I had
to chage a line in mul.py to get it to work. Namely, in the
_expandsums method I had to change
terms = [Mul(a,b) for a in left for b in right]
to
terms = [a*b for a in left for b in right].
I would also like to have the eval function called automatically and
get rid of the apply_operators function.
¿Is this a good approach?
I've been looking at secondquant.py but still need to do more reading.
Greetings,
Asaf
On Tue, Mar 16, 2010 at 11:11 AM, Brian Granger <ellisonbg....@gmail.com> wrote:
Asaf,
Hi Asaf!
On Mon, Mar 15, 2010 at 6:46 PM, Asaf Paris Mandoki <asa...@gmail.com> wrote:
A friend of mine developed a python module for doing Dirac notation
algebra for quantum computing calculations. I figured this would be a
nice addition to sympy and am interested in integrating it. Is this
something that would fit with the sympy project?
I am definitely interested in this and could possible have a student
help with this.
Ondrej and I are also working on PDE based numerical methods of
solving the Schrodinger
equation. As part of this work, I will be creating Python classes for
Operators, States, etc. While these will be numerically focused, I
would like them to integrate with Sympy for handling things
symbolically.
Yes, that's definitely something that many people would be interested
in. Let me know if you need any help with integrating it with sympy.
You might also be interested in sympy/physics/secondquant.py. If you
could post here some example how it works, it'd be cool, then we can
think how to best integrate it.
Definitely have a look at this. In their we have the basics of states
and operators. It would be great to have a base level quantum module
that defines symbolic States, Operators, time evolution, delta
function, etc in a generic manner. Then the quantum computing and
second quantization package can subclass accordingly.
Is there a link to the package your friend developed?
Cheers,
Brian
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You might want to look at the geometric algebra module in sympy and
chapters 8 and 9 of
"Geometric Algebra for Physicists" by Doran and Lasenby for how you map
the bra-ket algebra
onto geometric algebra.
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