Tutorials and gallery¶

Tutorials¶

The following tutorials introduce core mathematical concepts provided by The Walrus, including the hafnian, loop hafnian, the permanent and the torontonian.

../_images/hafnian.png — Basics of Hafnians and Loop Hafnians¶

../_images/haf_benchmark.png — Benchmarking the Hafnian¶

../_images/perm_benchmark.png — Benchmarking the Permanent¶

../_images/tor_benchmark.png — Benchmarking the Torontonian¶

Non-Gaussian states gallery¶

Here you can find a curated list of Gaussian circuits and photon-number-resolved measurements to prepare non-Gaussian states of interest in quantum optics, information, metrology and computing.

The original idea of using general Gaussian states and photon-number-resolved measurements to generate complex non-Gaussian states was introduced by K.K. Sabapathy, H. Qi, J. Izaac, and C. Weedbrook in Phys. Rev. A 100, 012326, (2019) and it was further theoretically analyzed by D. Su, C.R. Myers, and K.K. Sabapathy in Phys. Rev. A 100, 052301, (2019) and arXiv:1902.02331.

If you develop a new circuit and measurement scheme to prepare a non-Gaussian state, add it to the gallery!