6
collaborators
2016–2016
years active
Contributions
QIP QCrypt TQC talk poster presenter award · △program ◇steering ○organizing · filled = chair
1 Poster
| Title | Conference | Co-authors |
|---|---|---|
| A positive tensor network approach for simulating open quantum many-body systems | QIP 2016 | Albert H. Werner, Daniel Jaschke, Martin Kliesch, Tommaso Calarco, Jens Eisert, Simone Montangero |
Open many-body quantum systems play an important role in quantum optics and condensed-matter physics, and capture phenomena like transport, interplay between Hamiltonian and incoherent dynamics, and topological order generated by dissipation. We introduce a versatile and practical method to numerically simulate one-dimensional open quantum many-body dynamics using tensor networks. It is based on representing mixed quantum states in a locally purified form, which guarantees that positivity is preserved at all times. Moreover, the approximation error is controlled with respect to the trace norm. Hence, this scheme overcomes various obstacles of the known numerical open-system evolution schemes. To exemplify the functioning of the approach, we study both stationary states and transient dissipative behaviour, for various open quantum systems ranging from few to many bodies. |
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Collaborators
| Co-author | Joint talks |
|---|---|
| Albert H. Werner | 1 |
| Daniel Jaschke | 1 |
| Jens Eisert | 1 |
| Martin Kliesch | 1 |
| Simone Montangero | 1 |
| Tommaso Calarco | 1 |