Measurement before gate

PennyLane Help
1

Hi, I am constructing a Quantum Neural Network using continuous variable architecture with strawberryfields.
I would like to reduce the size of layer, by measuring one of the qumodes at the end of one layer as below.

quantum%20neural%20network
quantum%20neural%20network853×706 148 KB

The image is from the original paper on continuous-variable quantum neural network (https://arxiv.org/pdf/1806.06871.pdf)
However, I cannot apply a gate to an unmeasured qumode, after one of the qumodes.

Would there be a way to apply a gate after measurement?

Thank you :slight_smile:

2

Hi @Ashley,

Can you provide a bit more detail about what you’re trying to achieve here, and what’s preventing you from carrying that task out? I’d like to help if I can, but I don’t think I understand your question well enough.

Are you trying to perform a measurement on one qumode, then apply a gate to another qumode whose parameter is determined by the result of the first measurement?