A novel two-mode squeezed light based on double-pump phase-matching

Abstract

A novel two-mode non-degenerate squeezed light is generated based on a four-wave mixing (4WM) process driven by two pump fields crossing at a small angle. By exchanging the roles of the pump beams and the probe and conjugate beams, we have demonstrated the frequency-degenerate two-mode squeezed light with separated spatial patterns. Different from a 4WM process driven by one pump field, the refractive index of the corresponding probe field $n_p$ can be converted to a value that is greater than $1$ or less than $1$ by an angle adjustment. In the new region with $n_p<1$, the bandwidth of the gain is relatively large due to the slow change in the refractive index with the two-photon detuning. As the bandwidth is important for the practical application of a quantum memory, the wide-bandwidth intensity-squeezed light fields provide new prospects for quantum memories.

References in corpus (40)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Quantum sensing
• Advances in Quantum Metrology
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• Quantum-enhanced measurements: beating the standard quantum limit
• Squeezed states of light and their applications in laser interferometers
• Strong relative intensity squeezing by 4-wave mixing in Rb vapor
• Quantum memory for squeezed light
• Strong low-frequency quantum correlations from a four-wave mixing amplifier
• Quantum-Enhanced Sensing Based on Time Reversal of Nonlinear Dynamics
• Experimental generation of multiple quantum correlated beams from hot rubidium vapor
• Generation of spatially broadband twin beams for quantum imaging
• Detection loss tolerant supersensitive phase measurement with an SU(1,1) interferometer
• Coherent-Light Boosted, Super-Sensitive, Quantum Interferometry
• Phase sensing beyond the standard quantum limit with a truncated SU(1,1) interferometer
• Parametric Self-Oscillation via Resonantly Enhanced Multiwave Mixing
• Ultraslow propagation of matched pulses by four-wave mixing in an atomic vapor
• Pumped-up SU(1,1) interferometry
• High-performance Raman quantum memory with optimal control
• The phase sensitivity of an SU(1,1) interferometer with homodyne detection
• Phase sensitivity at the Heisenberg limit in an SU(1,1) interferometer via parity detection
• Relative intensity squeezing by four-wave mixing with loss: an analytic model and experimental diagnostic
• Gaussian state interferometry with passive and active elements
• Spin-mixing Interferometry with Bose-Einstein Condensates
• Role of the phase-matching condition in non-degenerate four-wave mixing in hot vapors for the generation of squeezed states of light
• Stimulated generation of superluminal light pulses via four-wave mixing
• Greatly enhanced intensity-difference squeezing for narrow-band quantum metrology applications
• Observation of localized multi-spatial-mode quadrature squeezing in four-wave mixing
• Engineering the Frequency Spectrum of Bright Squeezed Vacuum via Group Velocity Dispersion in an SU(1,1) Interferometer
• Optimized phase sensing in a truncated SU(1,1) interferometer
• Intramode correlations enhanced phase sensitivities in an SU(1,1) interferometer
• Phase sensitivity of gain-unbalanced nonlinear interferometers
• Absolute sensitivity of phase measurement in an SU(1,1) type interferometer
• Effects of losses in the hybrid atom-light interferometer
• Phase estimation of phase shifts in two arms for an SU(1,1) interferometer with coherent and squeezed vacuum states
• Phase estimation for an SU(1,1) interferometer in the presence of phase diffusion and photon losses
• Optimal mode configuration for multiple phase-matched four-wave mixing processes
• Atom-light superposition oscillation and Ramsey-like atom-light interferometer
• Twin-beam intensity-difference squeezing below 10 Hz
• Compact sub-kilohertz low-frequency quantum light source based on four-wave mixing in cesium vapor