Quantum dynamics on your laptop? New technique moves us closer

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hershkumar ◴[21 Oct 25 12:51 UTC] No.45655131[source]▶

Reading their paper, it does seem like this method is significantly simpler than using something like MPS, my main concern is the practical coupling regime for which this method works, I would imagine that it would fail closer to critical points in theories with phase transitions?

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1. nyeah ◴[21 Oct 25 13:33 UTC] No.45655602[source]▶

>>45655131 #

I'm curious, are any quantum simulators accessible to sort of hobbyists?

I have a background in solid state physics from coursework, but I've never really used QM for almost anything outside of school.

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2. krastanov ◴[21 Oct 25 13:46 UTC] No.45655752[source]▶

>>45655602 (TP) #

I think you will have best luck by searching for "open quantum systems" toolboxes in your language of choice. My preferences are, in order:

- QuantumOptics.jl in Julia

- QuantumToolbox.jl in Julia

- qutip in python

These are all "just" nice domain specific wrappers around linear algebra and differential equation tools. They do the "silly" exponentially expensive simulation technique that works for any quantum system. If you are interested in efficient (not exponential) simulation techniques that support only a subset of all quantum dynamics try out:

- stabilizer formalism (e.g. for error correction) with QuantumClifford.jl or stim

- Gaussian quantum optics (e.g. for laser physics) with Gabs.jl

- tensor networks (e.g. for arbitrary low-rank entanglement) with ITensors.jl

replies(1): >>45656023 #

3. nyeah ◴[21 Oct 25 14:09 UTC] No.45656023[source]▶

>>45655752 #

Thanks a lot!

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4. hershkumar ◴[21 Oct 25 14:21 UTC] No.45656186{3}[source]▶

>>45656023 #

If you prefer python, tenpy is quite nice for tensor networks as well.

replies(1): >>45656862 #