Optical Squeezing For Next Generation Interferometric Gravitational Wave

Optical Squeezing For Next Generation Interferometric Gravitational Wave Detectors Michael Stefszky, Sheon Chua, Conor Mow-Lowry, Ben Buchler, Kirk Mc. Kenzie, Sheila Dwyer, Ping Koy Lam & David Mc. Clelland

Project Aim D. Sigg

Ball on Stick Diagram Amplitude Squeezed State. Laser “Perfect” Perfect Classical Quantum Laser

The Optical Parametric Oscillator (OPO) 2ω Pump ω+ε Residual Pump Squeezing! ω- ε Down-conversion Process

The Real Thing To LIGO Nonlinear Crystal

Homodyne Detector Photo Detectors Subtractor Vacuum Field 50: 50 Local Oscillator

d. Bm/Hz [Rel. To SNL] Squeezer Performance Shot Noise 6 d. B Squeezing Requirement Frequency (Hz)

Measuring Squeezing Subtractor Squeezed Vacuum Field 50: 50 Local Oscillator

d. Bm/Hz [Rel. To SNL] Squeezer Performance Shot Noise 6 d. B Squeezing Frequency (Hz)

Injection into LIGO 50: 50 Squeezed Vacuum Field Signal Local Oscillator ACGRG 5 10

Results/Future Directions • Required squeezing level has been achieved • Currently removing degradation at low frequencies • Investigate long-term stability of system • Deliver to LIGO!!!

Thanks

Squeezing Enhancement K. Mc. Kenzie, D. A. Shaddock, D. E. Mc. Clelland Experimental Demonstration with Power-Recycled Michelson Interferometer for Gravitational Wave Detection