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Experimental demonstration of squeezing in a PR Interferometer

Experimental demonstration of squeezing in a PR Interferometer. Student : Kirk McKenzie Supervisors : Dr Daniel Shaddock Prof David McClelland Department : ACIGA Gravitational Wave Research Facility Department of Physics Australian National Uni. Squeezing and GW detectors.

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Experimental demonstration of squeezing in a PR Interferometer

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  1. Experimental demonstration of squeezing in a PR Interferometer • Student: • Kirk McKenzie • Supervisors: • Dr Daniel Shaddock • Prof David McClelland • Department: • ACIGA Gravitational Wave Research Facility • Department of Physics • Australian National Uni LSC 2002 LIGO-G020150-00-Z

  2. Squeezing and GW detectors • Early theoretical work by Braginsky and Caves ~ 1980 • A few demonstrations on simple interferometers eg Mach Zehnder [1] and polarimeter [2] ~1987 • In the last few years there has been a revival of interest in squeezing in the GW community as LIGO II is expected to be radiation pressure noise limited (at low frequencies). [1] M. Xiao, L.-A. Wu and H.J. Kimble, Phys. Rev Lett. 59 (1987) [2] P. Grangier, R.E. Slusher, B. Yurke and A. LaPorta, Phys. Rev. Lett. 59 (1987) LSC 2002 LIGO-G020150-00-Z

  3. LSC 2002 LIGO-G020150-00-Z

  4. (2.9) (4.8) (0.35) (0.51) LSC 2002 LIGO-G020150-00-Z

  5. Squeezing Applicability • Realistic (sub)configuration • Advanced LIGO signal extraction method (offset locking) • All at 1064nm • Low frequency squeezing should not be a problem with GW detector • Interferometer and squeezing LOCKED • Results limited by losses in our isolator~15% • But isolator loss less than 0.5% achievable! LSC 2002 LIGO-G020150-00-Z

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