TY  - JOUR
A1  - Lemr, Karel
A1  - Cernoch, A.
A1  - Soubusta, Jan
A1  - Kieling, Konrad
A1  - Eisert, Jens
A1  - Dusek, M.
T1  - Experimental implementation of the optimal linear-optical controlled phase gate
JF  - Physical review letters
N2  - We report on the first experimental realization of optimal linear-optical controlled phase gates for arbitrary phases. The realized scheme is entirely flexible in that the phase shift can be tuned to any given value. All such controlled phase gates are optimal in the sense that they operate at the maximum possible success probabilities that are achievable within the framework of postselected linear-optical implementations with vacuum ancillas. The quantum gate is implemented by using bulk optical elements and polarization encoding of qubit states. We have experimentally explored the remarkable observation that the optimum success probability is not monotone in the phase.
Y1  - 2011
U6  - https://doi.org/10.1103/PhysRevLett.106.013602
SN  - 0031-9007
VL  - 106
IS  - 1
PB  - American Physical Society
CY  - College Park
ER  -