@article {765,
title = {Probabilistically Perfect Cloning of Two Pure States: Geometric Approach},
journal = {Physical Review Letters},
volume = {116},
year = {2016},
month = {5/2016},
issn = {1079-7114},
doi = {10.1103/PhysRevLett.116.200401},
author = {Yerokhin, V. and Shehu, A. and Feldman, E. and E. Bagan and Bergou, J. A.}
}
@article {PhysRevLett.116.160406,
title = {Relations between Coherence and Path Information},
journal = {Phys. Rev. Lett.},
volume = {116},
year = {2016},
month = {Apr},
pages = {160406},
publisher = {American Physical Society},
doi = {10.1103/PhysRevLett.116.160406},
url = {http://link.aps.org/doi/10.1103/PhysRevLett.116.160406},
author = {E. Bagan and Bergou, J{\'a}nos A. and Cottrell, Seth S. and Hillery, Mark}
}
@article {1367-2630-17-12-123015,
title = {A geometric approach to quantum state separation},
journal = {New Journal of Physics},
volume = {17},
number = {12},
year = {2015},
pages = {123015},
abstract = {Probabilistic quantum state transformations can be characterized by the degree of state separation they provide. This, in turn, sets limits on the success rate of these transformations. We consider optimum state separation of two known pure states in the general case where the known states have arbitrary a priori probabilities. The problem is formulated from a geometric perspective and shown to be equivalent to the problem of finding tangent curves within two families of conics that represent the unitarity constraints and the objective functions to be optimized, respectively. We present the corresponding analytical solutions in various forms. In the limit of perfect state separation, which is equivalent to unambiguous state discrimination, the solution exhibits a phenomenon analogous to a second order symmetry breaking phase transition. We also propose a linear optics implementation of separation which is based on the dual rail representation of qubits and single-photon multiport interferometry.},
url = {http://stacks.iop.org/1367-2630/17/i=12/a=123015},
author = {E. Bagan and Yerokhin, V. and Shehu, A. and Feldman, E. and Bergou, J. A.}
}
@article {gendra_probabilistic_2014,
title = {Probabilistic Metrology Attains Macroscopic Cloning of Quantum Clocks},
journal = {Physical Review Letters},
volume = {113},
number = {26},
year = {2014},
issn = {0031-9007, 1079-7114},
doi = {10.1103/PhysRevLett.113.260402},
url = {http://link.aps.org/doi/10.1103/PhysRevLett.113.260402},
author = {Gendra, B. and Calsamiglia, John and Mu{\~n}oz-Tapia, R. and E. Bagan and Chiribella, G.}
}
@article {499,
title = {Programmable discrimination with an error margin},
journal = {Physical Review A},
volume = {88},
year = {2013},
month = {11/2013},
pages = {052304},
issn = {1094-1622},
doi = {10.1103/PhysRevA.88.052304},
author = {Sent{\'\i}s, G and E. Bagan and Calsamiglia, John and Mu{\~n}oz-Tapia, R.}
}
@article {436,
title = {Quantum Metrology Assisted by Abstention},
journal = {Physical Review Letters},
volume = {110},
year = {2013},
month = {3/2013},
pages = {100501},
abstract = {The main goal of quantum metrology is to obtain accurate values of physical parameters using quantum probes. In this context, we show that abstention, i.e., the possibility of getting an inconclusive answer at readout, can drastically improve the measurement precision and even lead to a change in its asymptotic behavior, from the shot-noise to the Heisenberg scaling. We focus on phase estimation and quantify the required amount of abstention for a given precision. We also develop analytical tools to obtain the asymptotic behavior of the precision and required rate of abstention for arbitrary pure states.},
issn = {1079-7114},
doi = {10.1103/PhysRevLett.110.100501},
url = {http://prl.aps.org/abstract/PRL/v110/i10/e100501},
author = {Gendra, B. and Ronco-Bonvehi, E. and Calsamiglia, John and Mu{\~n}oz-Tapia, R. and E. Bagan}
}
@article {PhysRevLett.105.080504,
title = {Local Discrimination of Mixed States},
journal = {Phys. Rev. Lett.},
volume = {105},
number = {8},
year = {2010},
month = {Aug},
pages = {080504},
publisher = {American Physical Society},
doi = {10.1103/PhysRevLett.105.080504},
author = {Calsamiglia, John and de Vicente, J. I. and Mu{\~n}oz-Tapia, R. and E. Bagan}
}
@article {audenaert_discriminating_2007,
title = {Discriminating States: The Quantum Chernoff Bound},
journal = {Physical Review Letters},
volume = {98},
number = {16},
year = {2007},
pages = {160501{\textendash}4},
doi = {10.1103/PhysRevLett.98.160501},
url = {http://link.aps.org/abstract/PRL/v98/e160501},
author = {K. M. R. Audenaert and J. Calsamiglia and R. {Munoz-Tapia} and E. Bagan and Ll. Masanes and A. Acin and F. Verstraete}
}
@article {Bagan2003,
title = {Minimal measurements of the gate fidelity of a qudit map},
journal = {Physical Review A},
volume = {67},
number = {1},
year = {2003},
issn = {1050-2947},
doi = {10.1103/PhysRevA.67.014303},
url = {http://pra.aps.org/abstract/PRA/v67/i1/e014303},
author = {E. Bagan and Baig, M. and Mu{\~n}oz-Tapia, R.}
}
@article {Bagan2002,
title = {Optimal Scheme for Estimating a Pure Qubit State via Local Measurements},
journal = {Physical Review Letters},
volume = {89},
number = {27},
year = {2002},
issn = {0031-9007},
doi = {10.1103/PhysRevLett.89.277904},
url = {http://prl.aps.org/abstract/PRL/v89/i27/e277904},
author = {E. Bagan and Baig, M. and Mu{\~n}oz-Tapia, R.}
}
@article {Bagan2001a,
title = {Aligning Reference Frames with Quantum States},
journal = {Physical Review Letters},
volume = {87},
number = {25},
year = {2001},
issn = {0031-9007},
doi = {10.1103/PhysRevLett.87.257903},
url = {http://prl.aps.org/abstract/PRL/v87/i25/e257903},
author = {E. Bagan and Baig, M. and Mu{\~n}oz-Tapia, R.}
}
@article {Bagan2001,
title = {Communication of spin directions with product states and finite measurements},
journal = {Physical Review A},
volume = {64},
number = {2},
year = {2001},
issn = {1050-2947},
doi = {10.1103/PhysRevA.64.022305},
url = {http://pra.aps.org/abstract/PRA/v64/i2/e022305},
author = {E. Bagan and Baig, M. and Mu{\~n}oz-Tapia, R.}
}
@article {Bagan2001c,
title = {Optimal encoding and decoding of a spin direction},
journal = {Physical Review A},
volume = {63},
number = {5},
year = {2001},
issn = {1050-2947},
doi = {10.1103/PhysRevA.63.052309},
url = {http://pra.aps.org/abstract/PRA/v63/i5/e052309},
author = {E. Bagan and Baig, M. and Brey, A. and Mu{\~n}oz-Tapia, R. and Tarrach, R.}
}