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DTSTART:20190331T030000
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DTSTART:20191027T020000
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DTSTAMP:20260404T013605Z
UID:5c5c38a48b777153436874@ist.ac.at
DTSTART:20191008T110000
DTEND:20191008T120000
DESCRIPTION:Speaker: Stefan Filipp\nhosted by Johannes Fink\nAbstract: In r
 ecent years quantum technologies have rapidly developed towards first real
 izations of quantum computers that promise to outperform conventional comp
 uters in certain types of problems. This includes problems in optimization
 \, machine learning\, finite element calculations\, but also in the comput
 ation of complex molecules. We utilize a fixed-frequency superconducting q
 ubit system\, an architecture characterized by its stability\, relatively 
 long coherence times and scalability. On this platform we use variational 
 algorithms to compute the ground state of small molecules. Such algorithms
  are well suited for near-term applications on non-error corrected quantum
  hardware because they only rely on a small number of quantum operations. 
 To compute the energy spectra of molecular hydrogen we employ parametrical
 ly-driven flux-tunable couplers to realize exchange-type interactions that
  preserve the number of qubit excitations corresponding to the fixed numbe
 r of electrons in the molecule. With this choice we can make best use of t
 he available hardware and realize short algorithms that finish within the 
 coherence time of the system. With gate fidelities around 95% we compute t
 he eigenstates within an accuracy of 50 mHartree\, a good starting point f
 or near-term applications with scientific and commercial relevance.
LOCATION:Heinzel Seminar Room / Office Bldg West (I21.EG.101)\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Stefan Filipp: Quantum Seminars: Quantum chemistry calculations on 
 a superconducting qubit quantum processor
URL:https://talks-calendar.ista.ac.at/events/1966
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