Optics Letters

Parametric amplification and squeezed-light generation in a nonlinear directional coupler

Antonio Mecozzi

Published Oct 1, 1988• 13 citations

Abstract

A scheme to realize phase-sensitive amplification of light using a nonlinear coherent coupler is proposed. Squeezed-light generation with low pump power and short interaction length is possible with this technique.

DOI: 10.1364/ol.13.000925

Related papers

Generation of squeezed light in a nonlinear asymmetric directional coupler

Faisal A A El-Orany, Jan Peřina, M Sebawe Abdalla

We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective source of single-mode squeezed light. This is demonstrated, under certain conditions and for specific modes, for incident coherent beams in terms of the quasiprobability functions, photon-number distribution and phase distribution.

arXiv:1107.5398Journal of Optics B Quantum and Semiclassical OpticsMar 27, 200110 citations

Multimode optical parametric amplification in the phase-sensitive regime

G. Frascella, Roman V. Zakharov, O. V. Tikhonova +1 more

Phase-sensitive optical parametric amplification of squeezed states helps to overcome detection loss and noise and thus increases the robustness of sub-shot-noise sensing. Because such techniques, e.g., imaging and spectroscopy, operate with multimode light, multimode amplification is required. Here we find the optimal methods for multimode phase-sensitive amplification and verify them in an experiment where a pumped second-order nonlinear crystal is seeded with a Gaussian coherent beam. Phase-sensitive amplification is obtained by tightly focusing the seed into the crystal, rather than seeding with close-to-plane waves. This suggests that phase-sensitive amplification of sub-shot-noise images should be performed in the near field. A similar recipe can be formulated for the time and frequency, which makes this work relevant for quantum-enhanced spectroscopy.

arXiv:2102.11659Optics LettersApr 16, 20214 citations

Phase properties of the superposition of squeezed and displaced number states

Faisal A A El-Orany, Jan Peřina, M Sebawe Abdalla

We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective source of single-mode squeezed light. This is has been demonstrated, under certain conditions and for specific modes, for incident coherent beams in terms of the quasiprobability functions, photon-number distribution and phase distribution.

arXiv:1107.5392Journal of Optics B Quantum and Semiclassical OpticsJul 31, 200010 citations

Squeezed light generated by CPT-enabled phase sensitive amplification (Conference Presentation)

Fabien Bretenaker, Pascal Neveu, J. Delpy +4 more

The minimum resolvable signal in optical metrology and sensing applications is usually limited by the so-called standard quantum limit. One way to improve the signal-to-noise ratio is to use squeezed states of light. Squeezed light can be generated using different types of nonlinear interactions either in solid-state nonlinear crystals or in atomic systems. One way to generate squeezed light is to use a phase sensitive amplifier that will amplify one quadrature of the considered mode and deamplify the other one. We have recently shown that metastable helium vapor at room temperature can exhibit strong four-wave mixing effects and behave like a perfect phase sensitive amplifier when it is prepared in coherent population trapping situation. In this talk, we will present the application of this phase sensitive amplification to the generation of squeezed vacuum states of light and detail the performances and limitations of the system

Quantum Sensing and Nano Electronics and PhotonicsMar 10, 20200 citations

Properties of a directional coupler with parametric amplification

József Janszky, C. Sibilia, M. Bertolotti +2 more

Properties of an optical field propagating inside a directional coupler containing a parametric amplifying medium are studied. Conditions for pump controlled, low noise switching between the channels are analysed.

Quantum and Semiclassical Optics Journal of the European Optical Society Part BAug 1, 199530 citations

Squeezed Light in Weak Value Amplification for Single-Photon-Level Nonlinearity

F. Matsuoka, Akihisa Tomita, Akihiro Okamoto

We propose the use of a squeezed coherent light probe in weak value amplification of single photon nonlinearity. It improves the success probability more than tenfold without the degradation of the error probability.

Conference on Lasers and Electro-OpticsJun 30, 20130 citations