1. C. M. Caves, K. S. Thorne,R. W. P. Dreyer, V. D. Sandberg, and M. Zimmermann, Rev. Mod. Phys.
52, 341 (1980).
2. P. Meystre and M. O. Scully, eds., Quantum Optics, Experimental Gravitation and Measurement Theory, ( Plenum, New York, 1983 ).
3. V. B. Braginsky, Y. L. Vorontsov, and K. S. Thorne, Science, 209, 547 (1980). V. B. Braginsky, F.Y. Khalili, Quantum Measurement, K.P. Thorne, ed ( Cambridge University Press, Cam-bridge, 1992 ).
4. M. D. Levenson, R. M. Shelby, M. Reid, and D. F. Walls, Phys. Rev. Lett.
57, 2473 (1986).
5. A. La Porta, R. E. Slusher, and B. Yurke, Phys. Rev. Lett.
62 28 (1989).