Qutrit under control

Many thing can be done with qubits nowdays. But about a qutrit? Our lab developed an interesting toolbox to do many things with qutrits. We can create quantum states with fidelities above 99%, perform quantum tomography of these states and even quantum process tomography for the measurement. More importantly we deduced a scheme to probe just one of the states of the qutrit while preserving quantum coherence between two other states. This type of the measurement is not trivial to realize and is necessary to test Kochen-Specker contextuality. See our recent paper for details.

Source: Realization of a binary-outcome projection measurement of a three-level superconducting quan