0:00:10one the key problems
0:00:12you'll be reading about
0:00:14in this special issue on a topological quantum computing
0:00:18is known to extract information which were hidden inside a total articulate
0:00:27you don't look you behind the information from the environment
0:00:31and that intensity information from the coherence
0:00:35but this very same property
0:00:37makes it very difficult to extract information once you needed
0:00:42this is the major problem
0:00:44and in this work
0:00:46we go one way around
0:00:53this is a proposal
0:00:55to use the flux to read to read out the state of the topological q
0:00:59but
0:01:00welcome back to this device in just a moment
0:01:03let me first walk you through the basic mechanism
0:01:07the topological cube it consists of
0:01:10ward distance
0:01:12in a super conductor
0:01:14and together these two voices encode the state different you
0:01:19they do this in such a way that the state of the cube it is
0:01:22protected from perturbations asking only on one of the
0:01:26basically the state of the cubic zero if the party of the number of elections
0:01:31in the superconducting i don't even
0:01:34and the state is one
0:01:35the better results
0:01:37no you would like to read out the state
0:01:39without actually counting the elections
0:01:42and the way to do this is to the fact call the
0:01:44however cash effect
0:01:48i perfect states
0:01:50then be more cakes encircling superconducting either
0:01:55would be classification
0:01:57which is determined by the parity of the number of particles
0:02:01inside the i don't
0:02:04this looks good
0:02:06but there is a problem with this effect
0:02:08which is that i mean cost of work is to switch
0:02:12or differences which are used to define a topological humans
0:02:16these are massive classical objects
0:02:19they do not interfere
0:02:22so this would not work
0:02:24our proposal is to work around this
0:02:27by using another type of forty six
0:02:30which have no for
0:02:32it is the normal core of the because for texas
0:02:35basically this whole superconducting
0:02:38which makes the mess
0:02:40so we would like to use corners boxes
0:02:43these exist "'cause" shows a simple pieces and eleven injunction joe's injunction which is just
0:02:49a tunnel battery across the superconducting
0:02:52and the chosen for this is will address along the tunnel junction
0:02:56some of the superconducting i don't
0:03:00ending because of what pieces and thereby measured already
0:03:04of number of the lectures and read out that a large document
0:03:09no the device which we propose is a hybrid devices
0:03:13it consists of a superconducting bring
0:03:16this is the flux you met
0:03:18according to superconducting drinkers little clockwise
0:03:21what counterclockwise
0:03:24and its interface with a topological cute
0:03:28in this particular we get a station the role of because the forties this is
0:03:31clearly time domain blocks
0:03:34your
0:03:36and you more select one
0:03:39so here we have a hybrid system consisting of a topological q but these
0:03:44white dots which store
0:03:46one of them information in a way which is topological protected
0:03:50and the momel documents
0:03:52which is able to provide computed by the time of crusher effect
0:03:56and thereby can be out the state of the stuff like to compute
0:04:01so this is a device which
0:04:03we hope
0:04:04combines the best of both worlds
0:04:06the ease with which class to which is a conventional q but can be read
0:04:10out
0:04:11and the protection against incoherence from the environment
0:04:14which is offered by topological q