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SUMMARY:Noise-resistant quantum control from geometric curves - Edwin Barn
 es\, Virginia Tech
DTSTART:20201113T150000Z
DTEND:20201113T160000Z
UID:TALK151273@talks.cam.ac.uk
CONTACT:40340
DESCRIPTION:Future technologies such as quantum computing\, sensing and co
 mmunication demand the ability to control microscopic quantum systems with
  unprecedented accuracy. This task is particularly daunting due to unwante
 d and unavoidable interactions with noisy environments that destroy quantu
 m information through decoherence. I will present a new theoretical framew
 ork for deriving control waveforms that dynamically combat decoherence by 
 driving qubits in such a way that noise effects destructively interfere an
 d cancel out. This theory exploits a rich geometrical structure hidden wit
 hin the time-dependent Schrödinger equation in which quantum evolution is
  mapped to geometric curves. Control waveforms that suppress noise can be 
 obtained by drawing closed curves and computing their curvatures. I will s
 how how this can be done for single- and multi-qubit systems.\n\nReference
 s\n\n1) https://arxiv.org/abs/2008.01168 \n\nZoom Link\n\nPlease click the
  link below to join the webinar:\nhttps://us02web.zoom.us/j/86846521451?pw
 d=M0VUSE5wTEJwSndCbEx0VUtqNHpuZz09\nPasscode: 226745
LOCATION:Virtually\, at Zoom
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