Quantum measurement of amplitude fluctuation is performed by the injection of 2.5-dB amplitude-squeezed light produced by a quantum-well laser into the dark port of a beam splitter as the meter wave. It is shown that the measurements satisfy the criteria of quantum nondemolition measurement. The measured transfer coefficient and the quantum-state preparation ability are 1.07 and 0.8, respectively.
© 2001 Optical Society of America
[Optical Society of America ]
Junxiang Zhang, Tiancai Zhang, Ruifang Dong, Jing Zhang, Changde Xie, and Kunchi Peng, "Quantum Measurements With an Amplitude-Squeezed-Light Beam Splitter," Appl. Opt. 40, 5949-5953 (2001)