Generation of ${}^{87}$Rb-resonant bright two-mode squeezed light with four-wave mixing

Abstract

Squeezed states of light have found their way into a number of applications in quantum-enhanced metrology due to their reduced noise properties. In order to extend such an enhancement to metrology experiments based on atomic ensembles, an efficient light-atom interaction is required. Thus, there is a particular interest in generating narrow-band squeezed light that is on atomic resonance. This will make it possible not only to enhance the sensitivity of atomic based sensors, but also to deterministically entangle two distant atomic ensembles. We generate bright two-mode squeezed states of light, or twin beams, with a non-degenerate four-wave mixing (FWM) process in hot ${}^{85}$Rb in a double-lambda configuration. Given the proximity of the energy levels in the D1 line of ${}^{85}$Rb and ${}^{87}$Rb, we are able to operate the FWM in ${}^{85}$Rb in a regime that generates two-mode squeezed states in which both modes are simultaneously on resonance with transitions in the D1 line of ${}^{87}$Rb, one mode with the $F=2$ to $F^{\prime }=2$ transition and the other one with the $F=1$ to $F^{\prime }=1$ transition. For this configuration, we obtain an intensity difference squeezing level of $-3.5$ dB. Moreover, the intensity difference squeezing increases to $-5.4$ dB and $-5.0$ dB when only one of the modes of the squeezed state is resonant with the D1 $F=2$ to $F^{\prime }=2$ or $F=1$ to $F^{\prime }=1$ transition of ${}^{87}$Rb, respectively.

References in corpus (31)

• Quantum information with continuous variables
• Gaussian Quantum Information
• A gravitational wave observatory operating beyond the quantum shot-noise limit: Squeezed light in application
• Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
• Experimental realization of sub-shot-noise quantum imaging
• Quantum memory for squeezed light
• One-Way Quantum Computing in the Optical Frequency Comb
• Implementation of Continuous-Variable Quantum Key Distribution with Composable and One-Sided-Device-Independent Security Against Coherent Attacks
• Strong low-frequency quantum correlations from a four-wave mixing amplifier
• Storage and Retrieval of a Squeezed Vacuum
• Squeezed-Light Optical Magnetometry
• Quantum noise and correlations in resonantly enhanced wave mixing based on atomic coherence
• Quantum-Enhanced Plasmonic Sensing
• 0.75 atoms improve the clock signal of 10,000 atoms
• Experimental Vacuum Squeezing in Rubidium Vapor via Self-Rotation
• Vacuum Squeezing in Atomic Media via Self-Rotation
• Quantum Enhanced Magnetometer with Low-Frequency Squeezing
• Squeezing and entanglement delay using slow light
• Role of the phase-matching condition in non-degenerate four-wave mixing in hot vapors for the generation of squeezed states of light
• Squeezed light for bandwidth limited atom optics experiments at the Rubidium D1 line
• Establishing and storing of deterministic quantum entanglement among three distant atomic ensembles
• Outcoupling from a Bose-Einstein condensate with squeezed light to produce entangled atom laser beams
• Polarization squeezing of light by single passage through an atomic vapor
• Generation of pulsed and continuous-wave squeezed light with ${}^{87}$Rb vapor
• Squeezed-light-enhanced atom interferometry below the standard quantum limit
• Observation of Spatial Quantum Correlations in the Macroscopic Regime
• Strong quantum correlations in four wave mixing in ${}^{85}$Rb vapor
• Vacuum squeezed light for atomic memories at the D2 cesium line
• Deterministic Secure Communications using Two-Mode Squeezed States
• Improvement of vacuum squeezing resonant on the rubidium D1 line at 795 nm
• Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier

Cited by in corpus (7)

• Hot atomic vapors for nonlinear and quantum optics
• Squeezed lasing
• Degenerate four-wave mixing as a low-power source of squeezed light
• Interference effect and Autler-Townes splitting in coherent blue light generated by four-wave mixing
• Atomic Resonant Single-Mode Squeezed Light from Four-Wave Mixing through Feedforward
• Two-beam Coupling in the Production of Quantum Correlated Images by Four-wave Mixing
• A heralded single-photon source implemented with second-order nonlinear photonic crystals