Tutorials and gallery¶

Tutorials¶

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

Basics of Hafnians and Loop Hafnians¶

Benchmarking the Hafnian¶

Benchmarking the Permanent¶

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!