qml.devices.default_gaussian.fock_prob¶
-
fock_prob(cov, mu, event, hbar=2.0)[source]¶ Returns the probability of detection of a particular PNR detection event.
For more details, see:
Kruse, R., Hamilton, C. S., Sansoni, L., Barkhofen, S., Silberhorn, C., & Jex, I. “A detailed study of Gaussian Boson Sampling.” arXiv:1801.07488. (2018).
Hamilton, C. S., Kruse, R., Sansoni, L., Barkhofen, S., Silberhorn, C., & Jex, I. “Gaussian boson sampling.” Physical review letters, 119(17), 170501. (2017).
- Parameters
cov (array) – \(2N\times 2N\) covariance matrix
mu (array) – length-\(2N\) means vector
event (array) – length-\(N\) array of non-negative integers representing the PNR detection event of the multi-mode system.
hbar (float) – (default 2) the value of \(\hbar\) in the commutation relation \([\x,\p]=i\hbar\).
- Returns
probability of detecting the event
- Return type
float