operation – Quantum Optics Lab Olomouc

How many photons does it take to measure a transmittance? Sometimes less than one.

In collaboration with theoretical quantum physicists from Pavia, Italy, we have studied minimum-energy quantum reading. Here in Quantum Optics Lab Olomouc we have demonstrated some efficient reading protocols using fiber-optics interferometric setup which encodes two quantum bits in which-way degree

Jamiołkowski-Choi isomorphism

The Choi-Jamiołkowski isomorphism is an isomorphism between linear maps from Hilbert space \({\cal H}\) to Hilbert space \({\cal K}\) and operators living in the tensor product space \({\cal H}\otimes{\cal K}\). This isomorphism provides a simple way of studying linear maps