---
res:
  bibo_abstract:
  - Nonequilibrium phase transitions exist in damped-driven open quantum systems when
    the continuous tuning of an external parameter leads to a transition between two
    robust steady states. In second-order transitions this change is abrupt at a critical
    point, whereas in first-order transitions the two phases can coexist in a critical
    hysteresis domain. Here, we report the observation of a first-order dissipative
    quantum phase transition in a driven circuit quantum electrodynamics system. It
    takes place when the photon blockade of the driven cavity-atom system is broken
    by increasing the drive power. The observed experimental signature is a bimodal
    phase space distribution with varying weights controlled by the drive strength.
    Our measurements show an improved stabilization of the classical attractors up
    to the millisecond range when the size of the quantum system is increased from
    one to three artificial atoms. The formation of such robust pointer states could
    be used for new quantum measurement schemes or to investigate multiphoton phases
    of finite-size, nonlinear, open quantum systems.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Johannes M
      foaf_name: Fink, Johannes M
      foaf_surname: Fink
      foaf_workInfoHomepage: http://www.librecat.org/personId=4B591CBA-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0001-8112-028X
  - foaf_Person:
      foaf_givenName: András
      foaf_name: Dombi, András
      foaf_surname: Dombi
  - foaf_Person:
      foaf_givenName: András
      foaf_name: Vukics, András
      foaf_surname: Vukics
  - foaf_Person:
      foaf_givenName: Andreas
      foaf_name: Wallraff, Andreas
      foaf_surname: Wallraff
  - foaf_Person:
      foaf_givenName: Peter
      foaf_name: Domokos, Peter
      foaf_surname: Domokos
  bibo_doi: 10.1103/PhysRevX.7.011012
  bibo_issue: '1'
  bibo_volume: 7
  dct_date: 2017^xs_gYear
  dct_identifier:
  - UT:000397450500001
  dct_isPartOf:
  - http://id.crossref.org/issn/2160-3308
  dct_language: eng
  dct_publisher: American Physical Society@
  dct_title: Observation of the photon blockade breakdown phase transition@
...