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DTSTART:20180325T030000
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DTSTART:20171029T020000
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DTSTAMP:20260424T143141Z
UID:5a44e4189091f752940864@ist.ac.at
DTSTART:20180219T090000
DTEND:20180219T100000
DESCRIPTION:Speaker: Yiwen Chu\nhosted by Johannes Fink\nAbstract: The abil
 ity to engineer and manipulate different types of quantum mechanical objec
 ts allows us to take advantage of their unique properties and create usefu
 l hybrid technologies. Thus far\, complex quantum states and exquisite qua
 ntum control have been demonstrated in systems ranging from trapped ions t
 o superconducting resonators. Recently\, there have been many efforts to e
 xtend these demonstrations to the motion of complex\, macroscopic objects.
  These mechanical objects have important applications as quantum memories 
 or transducers for measuring and connecting different types of quantum sys
 tems. In particular\, there have been a few experiments that couple motion
  to nonlinear quantum objects such as superconducting qubits. This opens u
 p the possibility of creating\, storing\, and manipulating non-Gaussian qu
 antum states in mechanical degrees of freedom. However\, before sophistica
 ted quantum control of mechanical motion can be achieved\, we must realize
  systems with long coherence times while maintaining a sufficient interact
 ion strength. These systems should be implemented in a simple and robust m
 anner that allows for increasing complexity and scalability in the future.
  In this talk\, I will describe our recent experiments demonstrating a hig
 h frequency bulk acoustic wave resonator that is strongly coupled to a sup
 erconducting qubit using piezoelectric transduction. Our device requires o
 nly simple fabrication methods\, extends coherence times to many microseco
 nds\, and provides controllable access to a multitude of phonon modes. We 
 use this system to demonstrate basic quantum operations on the coupled qub
 it-phonon system. I will also briefly describe our current efforts to furt
 her improve our electromechanical device\, which will hopefully allow for 
 advanced quantum protocols analogous to what has been shown in optical and
  microwave resonators\, resulting in a novel resource for implementing hyb
 rid quantum technologies.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:pdelreal@ist.ac.at
SUMMARY:Yiwen Chu: Quantum acoustics with superconducting qubits
URL:https://talks-calendar.ista.ac.at/events/1029
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