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Engineering quantum states by fiber-based SU(1,1) nonlinear interferometers

Xiaoying Li

Modes of photons play essential roles in interference. Using the fiber-based nonlinear interferometry that separates the nonlinear gain control from dispersion engineering, we show a new approach of modifying the mode structure of quantum state.

Conference on Lasers and Electro-OpticsJan 1, 20210 citations

Nonlinear optical SU(1,1) interferometer using four-wave mixing in Rb

Prasoon Gupta, Brian E. Anderson, Travis Horrom +1 more

Bulletin of the American Physical SocietyMay 26, 20160 citations

A broadband fiber-optic nonlinear interferometer

Joseph M. Lukens, Raphael C. Pooser, Nicholas A. Peters

We describe an all-fiber nonlinear interferometer based on four-wave mixing in highly nonlinear fiber. Our configuration realizes phase-sensitive interference with 97% peak visibility and >90% visibility over a broad 554 GHz optical band. By comparing the output noise power to the shot-noise level, we confirm noise cancellation at dark interference fringes, as required for quantum-enhanced sensitivity. Our device extends nonlinear interferometry to the important platform of highly nonlinear optical fiber and could find applications in a variety of fiber-based sensors.We describe an all-fiber nonlinear interferometer based on four-wave mixing in highly nonlinear fiber. Our configuration realizes phase-sensitive interference with 97% peak visibility and >90% visibility over a broad 554 GHz optical band. By comparing the output noise power to the shot-noise level, we confirm noise cancellation at dark interference fringes, as required for quantum-enhanced sensitivity. Our device extends nonlinear interferometry to the important platform of highly nonlinear optical fiber and could find applications in a variety of fiber-based sensors.

arXiv:1808.05041Applied Physics LettersAug 27, 201819 citations

Optimal detection of ultra-broadband bi-photons with quantum nonlinear SU(1,1) interference

Nir Nechushtan, Han‐Zhong Zhang, Mallachi-Elia Meller +1 more

The visibility of nonlinear SU(1,1) interference directly reflects the nonclassical properties of entangled bi-photons and squeezed light with practically unlimited bandwidth, high efficiency and ultra-high photon flux, orders of magnitude beyond the abilities of standard photo-detectors. We study experimentally the dependence of the SU(1,1) visibility on the phase matching conditions and beam parameters in a free-space configuration, and show that maximal SU(1,1) visibility requires extreme collinear conditions, which deviate from the conditions for maximal nonlinear conversion. We demonstrate near-ideal visibility of ∼95% (limited only by internal loss) in an ultra-broadband SU(1,1), interferometer with over 120 THz of squeezed light bandwidth. Utilizing this analysis we demonstrate efficient detection of the spectral phase of single-cycle bi-photons and precise compensation of the dispersion over a full octave of bandwidth.The visibility of nonlinear SU(1,1) interference directly reflects the nonclassical properties of entangled bi-photons and squeezed light with practically unlimited bandwidth, high efficiency and ultra-high photon flux, orders of magnitude beyond the abilities of standard photo-detectors. We study experimentally the dependence of the SU(1,1) visibility on the phase matching conditions and beam parameters in a free-space configuration, and show that maximal SU(1,1) visibility requires extreme collinear conditions, which deviate from the conditions for maximal nonlinear conversion. We demonstrate near-ideal visibility of ∼95% (limited only by internal loss) in an ultra-broadband SU(1,1), interferometer with over 120 THz of squeezed light bandwidth. Utilizing this analysis we demonstrate efficient detection of the spectral phase of single-cycle bi-photons and precise compensation of the dispersion over a full octave of bandwidth.

New Journal of PhysicsOct 13, 20215 citations

A novel variation on the SU(1,1) interferometer for phase sensing beyond the standard quantum limit

Bonnie L. Schmittberger, Brian E. Anderson, Prasoon Gupta +4 more

Bulletin of the American Physical SocietyJun 6, 20170 citations

Quantum enhancement of phase sensitivity for SU(1,1) interferometer via low-noise boost of phase sensing photons using non-Gaussianity

Dezheng Guo, Xin Wang, Junren Cheng +2 more

The European Physical Journal PlusMar 11, 20240 citations

A Broadband All-Fiber SU(1,1) Interferometer

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A Broadband All-Fiber SU(1,1) Interferometer

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