0:00:08if you look on information sciences really seen tremendous progress over the last several years
0:00:12with the shift of emphasis in the community from principal demonstrations of quite incoherent phenomena
0:00:16to it and attempt to tackle heart engineering challenges associated with producing robust and hopefully
0:00:22useful quantum systems
0:00:24a major challenge are community is the accumulation of error nudity coherence or general loss
0:00:29of one and s from unwanted environmental fluctuations there are a variety of error models
0:00:34that have been developed in order to account for this but all of them really
0:00:36small sure in that they fail to adequately address the dominant forms of error and
0:00:41of noise that occur realistic laboratory settings
0:00:45work builds on recent effort in the last several years incorporating transfer functions which are
0:00:50common engineering into the vernacular of quantum control
0:00:53we expand and generalize the so-called delta function framework allowing us to analytically calculate spectral
0:00:58functions for arbitrary piecewise constant can control in the presence of universal time dependent noise
0:01:05now in this framework were able to effectively reduce the challenge of calculating or susceptibility
0:01:10in complex algorithms a modulating gate i to the relatively straightforward problem of calculating a
0:01:17spectral filter function
0:01:19this is an experimentally validated technique that's been shown useful in a wide variety of
0:01:24technological platforms and accordingly we really hope it will prove useful in one control quantum
0:01:29information science experiments