Error message

  • Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2405 of /home/equsorg/public_sqd/includes/menu.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6598 of /home/equsorg/public_sqd/includes/common.inc).
  • Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /home/equsorg/public_sqd/includes/common.inc).

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