Quantum State Interferography

Scientists from Raman Research Institute (RRI), have found a new way of inferring the state of a system (both two-dimensional qubits as well as higher-dimensional “qubits”) from an interference pattern, which they term ‘Quantum State Interferography’.
A qubit is a 2-dimensional quantum system and requires usually 2 complex numbers to be determined towards state estimation
Scientists are experimenting with new ways to manipulate quantum states so that they can be harnessed for computing, communication, and metrology.
Quantum State Interferography, can help make such manipulations simpler so that several crucial operations in quantum technologies become less cumbersome.The setup requires only two interferometers from which many interferograms can be obtained to reconstruct the state.