Observation of -9 dB quadrature squeezing with improvement of phase stability in homodyne measurement

Abstract

We observe -9.01$\pm$0.14 dB of squeezing and +15.12$\pm$0.14 dB of antisqueezing with a local oscillator phase locked in homodyne measurement. In reference [1], two main factors are pointed out which degrade the observed squeezing level: phase fluctuation in homodyne measurement and intracavity losses of an optical parametric oscillator for squeezing. We have improved the phase stability of homodyne measurement and have reduced the intracavity losses. We measure pump power dependences of the squeezing and antisqueezing levels, which show good agreement with theoretical calculations taking account of the phase fluctuation.

4 pages, 4 figures

Cited by in corpus (47)

• Photonic quantum technologies
• Observation of squeezed light with 10dB quantum noise reduction
• Quantum Metrology for Gravitational Wave Astronomy
• Mach-Zehnder Interferometry at the Heisenberg Limit with coherent and squeezed-vacuum light
• Generating Entangled Microwave Radiation Over Two Transmission Lines
• Quantum-enhanced optical phase tracking
• Continuous variable entanglement on a chip
• Theory of Two-Photon Interactions with Broadband Down-Converted Light and Entangled Photons
• Continuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide
• Methods for Producing Optical Coherent State Superpositions
• Experimental demonstration of quantum teleportation of broadband squeezing
• Quantum improvement of time transfer between remote clocks
• Phase estimation for thermal Gaussian states
• High-fidelity continuous-variable quantum teleportation toward multi-step quantum operations
• Propagation of transverse intensity correlations of a two-photon state
• LIGOs Quantum Response to Squeezed States
• Generation of squeezed vacuum state in the millihertz frequency band
• Phase-sensitive Manipulations of Squeezed Vacuum Field in an Optical Parametric Amplifier inside an Optical Cavity
• Rubidium resonant squeezed light from a diode-pumped optical-parametric oscillator
• Non-critically squeezed light via spontaneous rotational symmetry breaking
• Microcontroller-based locking in optics experiments
• Generation of Schrödinger cat states with Wigner negativity using continuous-wave low-loss waveguide optical parametric amplifier
• Generating highly squeezed Hybrid Laguerre-Gauss modes in large-Fresnel-number Degenerate Optical Parametric Oscillators
• Experimental preparation and manipulation of squeezed cat states via an all-optical in-line squeezer
• Towards quantum frequency combs: boosting the generation of highly nonclassical light states by cavity-enhanced parametric down-conversion at high repetition rates
• Quantum-enhanced rubidium atomic magnetometer based on Faraday rotation via 795-nm Stokes operator squeezed light
• Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor
• Highly stable polarization independent Mach-Zehnder interferometer
• Demonstration of Cluster State Shaping and Quantum Erasure for Continuous Variables
• Multipartite Continuous Variable Solution for the Byzantine Agreement Problem
• Entanglement from superradiance and rotating quantum fluids of light
• Shortcuts to Squeezed Thermal States
• Reservoir-engineered squeezed lasing through the parametric coupling
• Squeezed light at 2128 nm for future gravitational-wave observatories
• Effect of imperfect homodyne visibility on multi-spatial-mode two-mode squeezing measurements
• Remote preparation and manipulation of squeezed light
• Photon subtraction from traveling fields - recent experimental demonstrations
• Spontaneous parametric down-conversion induced by optomechanical gradient forces in nanophotonic waveguides
• Squeezed-light generation in a nonlinear planar waveguide with a periodic corrugation
• Quantum-enhanced optical phase-insensitive heterodyne detection beyond 3-dB noise penalty of image band
• Measuring energy by measuring any other observable
• Multiple copy distillation and purification of phase diffused squeezed states
• Sub-0.1 degree phase locking of a single-photon interferometer
• Fault-tolerant $H^{\infty }$ control for optical parametric oscillators with pumping fluctuations
• Feasibility study of a coherent feedback squeezer
• Optimal strategies for transient and equilibrium quantum thermometry using Gaussian and non-Gaussian probes
• Probing squeezing for gravitational-wave detectors with an audio-band field