Abstract
Several research groups have recently observed optical signals using backaction evasion (BAE) techniques that measure a quantum mechanical observable without adding noise to that observable1,2,3. The goal of such measurements is to achieve quantum optical tapping3 and, ultimately, to carry out quantum nondemolition (QND) measurements of quantum states that leave the quantum state unaltered4 A QND measurement can be demonstrated by two successive backaction evasion measurements if losses are negligible for coupling to and from the BAE measurement apparatus, and if propagation losses between the two BAE measurements are negligible.
© 1994 Optical Society of America
PDF ArticleMore Like This
S. R. Friberg, S. Machida, and Y. Yamamoto
MF1 OSA Annual Meeting (FIO) 1991
Stephen R. Friberg, Susumu Machida, and Yoshihisa Yamamoto
PD12 Quantum Electronics and Laser Science Conference (CLEO:FS) 1992
S.-S. Yu and Y. Lai
QFE2 Quantum Electronics and Laser Science Conference (CLEO:FS) 1996