Marek Pechal

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Berry's geometric phase naturally appears when a quantum system is driven by an external field whose parameters are slowly and cyclically changed. A variation in the coupling between the system and the external field can also give rise to a geometric phase, even when the field is in the vacuum state or any other Fock state. We demonstrate the appearance of(More)
A quantum system interacting with its environment is subject to dephasing, which ultimately destroys the information it holds. Here we use a superconducting qubit to experimentally show that this dephasing has both dynamic and geometric origins. It is found that geometric dephasing, which is present even in the adiabatic limit and when no geometric phase is(More)
  • Nitram Sam, Simon Ssah, Kjetil Nippard, Jordan Nordgård, Ken Kilfedder, Victoria Clifford +494 others
  • 2014
Acknowledgments The authors wish to thank Amanda Hill (University of Manchester) for her contributions to the use-case scenarios and profiles supplements to this report and to the following reviewers for their expertise and time:
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