"We investigate the optimal trade-off between information gained about an unknown coherent state and the state disturbance caused by the measurement process. We propose several optical schemes that can enable this task, and we implement one of them, a scheme that relies on only linear optics and homodyne detection. Experimentally we reach near optimal performance, limited only by detection inefficiencies. In addition, we show that such a scheme can be used to enhance the transmission fidelity of a class of noisy channels."@en . . "Experimental demonstration of coherent state estimation with minimal disturbance" . . "475075" . . "024091-024094" . "Physical Review Letters" . "Filip, Radim" . . . . . "Leuchs, Gerd" . "2" . . . . "4"^^ . "RIV/61989592:15310/06:00003044" . "Experiment\u00E1ln\u00ED demonstrace m\u011B\u0159en\u00ED koherentn\u00EDch stav\u016F s minim\u00E1ln\u00ED poruchou"@cs . "[B42E843DDD0B]" . "Andersen, Ulrik" . . "We investigate the optimal trade-off between information gained about an unknown coherent state and the state disturbance caused by the measurement process. We propose several optical schemes that can enable this task, and we implement one of them, a scheme that relies on only linear optics and homodyne detection. Experimentally we reach near optimal performance, limited only by detection inefficiencies. In addition, we show that such a scheme can be used to enhance the transmission fidelity of a class of noisy channels." . . "1"^^ . "Experimental demonstration of coherent state estimation with minimal disturbance"@en . "Sabuncu, Metin" . "Experiment\u00E1ln\u00ED demonstrace m\u011B\u0159en\u00ED koherentn\u00EDch stav\u016F s minim\u00E1ln\u00ED poruchou"@cs . "96" . "Experimental demonstration of coherent state estimation with minimal disturbance" . "Experimental demonstration of coherent state estimation with minimal disturbance"@en . . . "15310" . "4"^^ . "P(GP202/03/D239), Z(MSM6198959213)" . . "RIV/61989592:15310/06:00003044!RIV07-GA0-15310___" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Nerovnost mezi optim\u00E1ln\u00ED fidelitou z\u00EDskanou z gaussovsk\u00E9ho m\u011B\u0159en\u00ED a fidelitou poru\u0161en\u00E9ho stavu je odvozena pro koherentn\u00ED stavy. Je navr\u017Eeno m\u011B\u0159en\u00ED saturuj\u00EDc\u00ED tuto nerovnost a n\u00E1sledn\u011B je experiment\u00E1ln\u011B demonstrov\u00E1no, s vyu\u017Eit\u00EDm pouze line\u00E1rn\u00ED optiky, homodynn\u00ED detekce elektro-optick\u00E9 kontroly. Bylo dosa\u017Eeno t\u00E9m\u011B\u0159 optim\u00E1ln\u00EDho v\u00FDsledku, kter\u00FD byl limitov\u00E1n ji\u017E pouze detek\u010Dn\u00ED \u00FA\u010Dinnost\u00ED."@cs . "0031-9007" . . "QUANTUM CRYPTOGRAPHY; INFORMATION"@en .