. "4"^^ . "We experimentally demonstrate phase-insensitive linear amplification of a continuous variable system in the optical regime, preserving the ancilla system at the output. Since our amplification operation is unitary up to small excess noise, it is reversible beyond the classical limit. Here, entanglement between the amplified output system and the ancilla system is the resource for the reversibility, and the amplification gain is G = 2.0. In addition, combining this amplifier with a beamsplitter, we also demonstrate approximate cloning of coherent states where an anticlone is present. We investigate the reversibility by reconstructing the initial state from the output correlations, and the results are slightly beyond the cloning limit. Furthermore, full characterization of the amplifier and cloner is given by using coherent states with several different mean values as inputs." . "Miwa, Yoshichika" . "Demonstration of a reversible phase-insensitive optical amplifier" . . . . . . "We experimentally demonstrate phase-insensitive linear amplification of a continuous variable system in the optical regime, preserving the ancilla system at the output. Since our amplification operation is unitary up to small excess noise, it is reversible beyond the classical limit. Here, entanglement between the amplified output system and the ancilla system is the resource for the reversibility, and the amplification gain is G = 2.0. In addition, combining this amplifier with a beamsplitter, we also demonstrate approximate cloning of coherent states where an anticlone is present. We investigate the reversibility by reconstructing the initial state from the output correlations, and the results are slightly beyond the cloning limit. Furthermore, full characterization of the amplifier and cloner is given by using coherent states with several different mean values as inputs."@en . . "Yoshikawa, Jun-Chi" . "Demonstration of a reversible phase-insensitive optical amplifier"@en . "1050-2947" . . . . . "Demonstration of a reversible phase-insensitive optical amplifier" . . . "15310" . . "Furusawa, Akira" . . . "Filip, Radim" . "Physical Review A" . "Demonstration of a reversible phase-insensitive optical amplifier"@en . "NOISE; CLONING; CRITERION; AMPLIFICATION; QUANTUM TELEPORTATION; CONTINUOUS VARIABLE SYSTEMS"@en . "193282" . . . "000290476900004" . "RIV/61989592:15310/11:10224806" . "P(7E08028), P(GA202/08/0224), P(ME10156), Z(MSM6198959213)" . . "[3D997E3EA436]" . "15"^^ . "5" . . "1"^^ . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . . "RIV/61989592:15310/11:10224806!RIV12-MSM-15310___" . "83" .