Quantum enhancement of the zero-area Sagnac interferometer topology for gravitational wave detection.

@article{Eberle2010QuantumEO,
  title={Quantum enhancement of the zero-area Sagnac interferometer topology for gravitational wave detection.},
  author={Tobias Eberle and Sebastian Steinlechner and J{\"o}ran Bauchrowitz and Vitus H{\"a}ndchen and Henning Vahlbruch and Moritz Mehmet and Helge M{\"u}ller-Ebhardt and Roman Schnabel},
  journal={Physical review letters},
  year={2010},
  volume={104 25},
  pages={
          251102
        }
}
Only a few years ago, it was realized that the zero-area Sagnac interferometer topology is able to perform quantum nondemolition measurements of position changes of a mechanical oscillator. Here, we experimentally show that such an interferometer can also be efficiently enhanced by squeezed light. We achieved a nonclassical sensitivity improvement of up to 8.2 dB, limited by optical loss inside our interferometer. Measurements performed directly on our squeezed-light laser output revealed… 

Figures from this paper

Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector

Squeezed states of light have been recently used to improve the sensitivity of laser-interferometric gravitational-wave detectors beyond the quantum limit. To completely establish quantum engineering

A gravitational wave observatory operating beyond the quantum shot-noise limit

Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein’s general theory of relativity1 and are generated,

A gravitational wave observatory operating beyond the quantum shot-noise limit: Squeezed light in application

Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein’s general theory of relativity1 and are generated,

Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB.

TLDR
The realization of a half-monolithic nonlinear resonator based on periodically-poled potassium titanyl phosphate which enabled the direct detection of up to 12.3 dB of squeezing at 5 MHz suggests that a long-term stable 1550 nm squeezed light source can be realized with strong squeezing covering the entire detection band of a 3rd generation gravitational-wave detector such as the Einstein Telescope.

Long-term stable squeezed vacuum state of light for gravitational wave detectors

Currently, the German/British gravitational wave (GW) detector GEO 600 is being upgraded within the GEO-HF program. One part of this upgrade consists of the integration of a squeezed-light laser to

Quantum Interferometer Combining Squeezing and Parametric Amplification.

TLDR
A compact quantum interferometers involving two optical parametric amplifiers and the squeezed states generated within the interferometer are directly used for the phase-sensing quantum state is proposed and experimentally demonstrated.

Twin-beam-enhanced displacement measurement of a membrane in a cavity

Ultrasensitive measurement of a small displacement is an essential goal in various applications of science and technology, ranging from large-scale laser interferometric gravitational wave detectors

Squeezed-light-driven force detection with an optomechanical cavity in a Mach–Zehnder interferometer

TLDR
This work analytically finds the optimal measurement strength, squeezing direction, and squeezing strength at which the symmetrized power spectral density for the measurement noise is minimized below the standard quantum limit.

Ultra-low phase noise squeezed vacuum source for gravitational wave detectors

Squeezed states of light are a valuable resource for reducing quantum noise in precision measurements. Injection of squeezed vacuum states has emerged as an important technique for reducing quantum
...

References

SHOWING 1-10 OF 25 REFERENCES

Experimental demonstration of a squeezing-enhanced power-recycled michelson interferometer for gravitational wave detection.

TLDR
It is experimentally demonstrate that a power recycled Michelson with squeezed light injected into the dark port can overcome this limit and an improvement in the signal-to-noise ratio is measured and locked stably for long periods of time.

Sagnac interferometer for gravitational-wave detection.

TLDR
A zero-area Sagnac interferometer as a broad band gravitational-wave detector is investigated, which is insensitive to induced birefringence, laser-frequency variation, arm imbalance, and dc mirror displacement.

Sagnac interferometer as a speed-meter-type, quantum-nondemolition gravitational-wave detector

According to quantum measurement theory, ``speed meters''---devices that measure the momentum, or speed, of free test masses---are immune to the standard quantum limit (SQL). It is shown that a

Quantum Mechanical Noise in an Interferometer

The interferometers now being developed to detect gravitational waves work by measuring the relative positions of widely separated masses. Two fundamental sources of quantum-mechanical noise

Demonstration of a squeezed-light-enhanced power- and signal-recycled Michelson interferometer.

TLDR
To achieve a broadband nonclassical sensitivity improvement, the experimental combination of three advanced interferometer techniques for gravitational wave detection, namely, power recycling, detuned signal recycling, and squeezed field injection was experimentally proved.

Observation of squeezed light with 10-dB quantum-noise reduction.

TLDR
It is shown experimentally that strong squeezing of light's quantum noise is possible and reached a benchmark squeezing factor of 10 in power (10 dB).

Recycling in laser-interferometric gravitational-wave detectors.

  • Meers
  • Physics
    Physical review. D, Particles and fields
  • 1988
TLDR
It is shown that it may be made to further enhance the sensitivity within a narrow bandwidth, becoming tuned recycling, and the various sensitivity-bandwidth combinations, together with the tuning properties, are discussed.

Quantum engineering of squeezed states for quantum communication and metrology

We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency band

Stable operation of a 300-m laser interferometer with sufficient sensitivity to detect gravitational-wave events within our galaxy.

TAMA300, an interferometric gravitational-wave detector with 300-m baseline length, has been developed and operated with sufficient sensitivity to detect gravitational-wave events within our galaxy

Experimental demonstration of resonant sideband extraction in a sagnac interferometer.

TLDR
An experimental investigation of the Sagnac interferometer in two configurations: with arm cavities, and with resonant sideband extraction, which shows an increase in sensitivity for signals outside the arm cavity bandwidth.