https://strawberryfields.ai/photonics/conventions/gates.html#displacement
The above is the only profile of Photon Gate from Strawberry Fields.
I have the following doubts about Photon Gate:
- Which of the photon gates are unitary and which are not?
- can photon gates be written in the form of unitary matrices like superconducting gates (Hadamard gates)?
- How do photon gates act on the ground state |0>?
- why do photon gates choose to be represented by annihilation operators, isn't this more abstract and harder to compute?
