Figure 6
Tomography of the interferometer for different values of the phase ϕ. (a) Tomography for 
(b) Tomography for 
, where the interferometer behaves as the identity with an additional (−1) phase factor on mode 2. (c) Tomography for 
: the interferometer behaves as a symmetric 50/50 beam‐splitter. (d) Tomography for 
: the interferometer behaves as a swap operation, exchanging modes 1 and 2. For each panel: red bars correspond to the reconstructed unitary Uexp, while green bars correspond to the ideal unitary Utheo. Light red bars correspond to the error in the reconstruction process.
