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Challenges in the High Frequency Region - Squeezing -

Challenges in the High Frequency Region - Squeezing -. Lisa Barsotti, LIGO-MIT GWADW2012 – Round Table. LIGO-G1200571. Quantum-Enhanced Advanced LIGO. 6 dB measured. Same NS-NS as aLIGO , better high frequency performance. LIGO-G1200571.

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Challenges in the High Frequency Region - Squeezing -

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  1. Challenges in theHigh Frequency Region - Squeezing - Lisa Barsotti, LIGO-MIT GWADW2012 – Round Table LIGO-G1200571

  2. Quantum-Enhanced Advanced LIGO 6 dB measured Same NS-NS as aLIGO, better high frequency performance L.Barsotti - GWADW2012 LIGO-G1200571

  3. Still with frequency independent squeezing (no filter cavities) L.Barsotti - GWADW2012 LIGO-G1200571

  4. L.Barsotti - GWADW2012 LIGO-G1200571

  5. L.Barsotti - GWADW2012 LIGO-G1200571

  6. L.Barsotti - GWADW2012 LIGO-G1200571

  7. The Message • We know how to get ready for aLIGO (6 dB) • Auto-alignment, better sqz angle sensing, mode matching, OPO temperature control, high OMC transmission,… • 10 dB is really hard, 15 dB is a dream, unless • Think 0 losses, 0 phase noise • If you have 10 things which have 0.5% losses each, total losses are >> 2% L.Barsotti - GWADW2012 LIGO-G1200571

  8. The Quantum Future (1 dB/year) 2012 2016 2020 2025 10 dB 6 dB 2 dB 15 dB Long term stability (alignment, OPO temperature, sqz phase,..) macroscopic losses 1-2% losses in Faradays, >98% mode matching, OMC > 99% Filter cavity to mitigate additional quantum noise at low frequency Everything <<1% losses (Faradays, OPO, OMC , IFO, ..) Filter cavities to beat radiation pressure noise …or some new idea! L.Barsotti - GWADW2012 LIGO-G1200571

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