Optical Squeezing For Next Generation Interferometric Gravitational Wave Detectors Michael Stefszky, Sheon Chua, Conor Mow-Lowry, Ben Buchler, Kirk McKenzie,

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Presentation transcript:

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

Project Aim D. Sigg

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

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

The Real Thing To LIGO Nonlinear Crystal

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

Squeezer Performance Shot Noise Squeezing Requirement Shot Noise dBm/Hz [Rel. To SNL] 6dB Squeezing Requirement Frequency (Hz)

Measuring Squeezing 50:50 Vacuum Field Squeezed Field Local Oscillator Subtractor 50:50 Vacuum Field Squeezed Field Local Oscillator

Squeezer Performance 6 dB Shot Noise Squeezing dBm/Hz [Rel. To SNL] Frequency (Hz)

Injection into LIGO 50:50 Squeezed Field Vacuum Field Signal Local Oscillator ACGRG5 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. McKenzie, D. A. Shaddock, D. E. McClelland Experimental Demonstration with Power-Recycled Michelson Interferometer for Gravitational Wave Detection