TensorMixedStates: a Julia library for simulating pure and mixed quantum states using matrix product states

• URL: http://arxiv.org/abs/2505.11377v1
• Date: Fri, 16 May 2025 15:41:05 GMT
• Title: TensorMixedStates: a Julia library for simulating pure and mixed quantum states using matrix product states
• Abstract summary: MixedStates is a Julia library built on top of ITensor.<n>It allows the simulation of quantum systems in presence of dissipation using matrix product states (MPS)
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We introduce TensorMixedStates, a Julia library built on top of ITensor which allows the simulation of quantum systems in presence of dissipation using matrix product states (MPS). It offers three key features: i) it implements the MPS representation for mixed states along with associated operations, in particular the time evolution according to a Lindblad equation or discrete time evolution using non-unitary gates (quantum channels), ii) it is based on ITensor, which has proven its effectiveness and which gives access to efficient low-level tensor manipulation as well state-of-the-art algorithms (like DMRG, TDVP, quantum numbers conservation and automated parallelization), finally iii) it presents a user-friendly interface allowing writing sophisticated simulations for pure and mixed quantum states in a few lines of code.

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