aqora

Atomic spectroscopy with squeezed light

Harry J. Kimble, Eugene Simon Polzik, J. Carri

A frequency tunable source of squeezed light has been developed for application to a variety of problems in atomic physics. The basic experimental arrangement consists of a subthreshold optical parametric oscillator (OPO) that is pumped by the frequency-doubled output of a titanium-sapphire laser. Squeezed light with continuous tunability of 2 GHz has been generated with a directly observed nonclassical noise reduction of 5.0 dB relative to the vacuumstate limit in a balanced homodyne detector (5.2 dB when corrected for detector noise). Although our source is potentially broadly tunable over the noncritical phase-matching bandwidth of potassium niobate, current research has concentrated on operation at 852 nm for excitation of the D2 line of atomic cesium. Relative to the usual quantum limit associated with vacuumstate fluctuations, enhanced sensitivity is demonstrated for the detection of Doppler-free resonances in FM saturation spectroscopy, with an improvement of 3.1 dB directly observed and 3.8 dB after correction for detector noise.A frequency tunable source of squeezed light has been developed for application to a variety of problems in atomic physics. The basic experimental arrangement consists of a subthreshold optical parametric oscillator (OPO) that is pumped by the frequency-doubled output of a titanium-sapphire laser. Squeezed light with continuous tunability of 2 GHz has been generated with a directly observed nonclassical noise reduction of 5.0 dB relative to the vacuumstate limit in a balanced homodyne detector (5.2 dB when corrected for detector noise). Although our source is potentially broadly tunable over the noncritical phase-matching bandwidth of potassium niobate, current research has concentrated on operation at 852 nm for excitation of the D2 line of atomic cesium. Relative to the usual quantum limit associated with vacuumstate fluctuations, enhanced sensitivity is demonstrated for the detection of Doppler-free resonances in FM saturation spectroscopy, with an improvement of 3.1 dB directly observed and 3.8 dB after correction for detector noise.

Annual Meeting Optical Society of AmericaJan 1, 19920 citations

Atomic spectroscopy with squeezed light for sensitivity beyond the vacuum-state limit

Eugene Simon Polzik, J. Carri, Harry J. Kimble

Applied Physics BSep 1, 1992180 citations

Squeezing with for atomic physics and spectroscopy

Jens Lykke Sørensen, Jan Hald, Nils B. Jørgensen +2 more

Parametric downconversion in media has, so far, proved to be the most effective way of generating squeezed light. The development of frequency tunable sources of such non-classical light opens up novel possibilities in atomic physics and spectroscopy. A brief overview of the results in this area of quantum optics is given, and a new experiment aimed on subshot-noise measurement of atomic orientation is described. We report a preliminary 5 dB quantum noise reduction observed directly around the 917 nm Cs line. We introduce a figure of merit for the medium utilized for squeezed light generation in an optical parametric oscillator and evaluate some available nonlinear media from this perspective.Parametric downconversion in media has, so far, proved to be the most effective way of generating squeezed light. The development of frequency tunable sources of such non-classical light opens up novel possibilities in atomic physics and spectroscopy. A brief overview of the results in this area of quantum optics is given, and a new experiment aimed on subshot-noise measurement of atomic orientation is described. We report a preliminary 5 dB quantum noise reduction observed directly around the 917 nm Cs line. We introduce a figure of merit for the medium utilized for squeezed light generation in an optical parametric oscillator and evaluate some available nonlinear media from this perspective.

Quantum and Semiclassical Optics Journal of the European Optical Society Part BApr 1, 19976 citations

Frequency Tunable Nonclassical Light Generation

Lingxiang He, Junmin Wang, Tiancai Zhang +2 more

Springer eBooksJan 1, 20000 citations

Quantum frequency conversion

Prem Kumar

Many demonstrations of the generation and application of squeezed light have recently been made. Progress in its application to spectroscopy,1 however, has been hampered by the lack of tunable sources of squeezed light. Present sources generate squeezing around a fixed frequency, whereas for spectroscopic applications, tunability is desirable. Here, I propose a scheme by which frequency-tunable squeezed light can be generated. I show that it is possible to change a light beam's frequency without affecting its quantum state. Consider the sum frequency process wherein a beam at ω1 is mixed with a pump beam at ω2 to generate the sum ω3 = ω1 + ω2.Many demonstrations of the generation and application of squeezed light have recently been made. Progress in its application to spectroscopy,1 however, has been hampered by the lack of tunable sources of squeezed light. Present sources generate squeezing around a fixed frequency, whereas for spectroscopic applications, tunability is desirable. Here, I propose a scheme by which frequency-tunable squeezed light can be generated. I show that it is possible to change a light beam's frequency without affecting its quantum state. Consider the sum frequency process wherein a beam at ω1 is mixed with a pump beam at ω2 to generate the sum ω3 = ω1 + ω2.

Annual Meeting Optical Society of AmericaJan 1, 199026 citations

Quantum Spectroscopy with Squeezed Light

Z. Ficek, R. Tanaś

Springer series in optical sciences/SPringer series in optical sciencesNov 7, 20160 citations

Spectroscopy with nonclassical light

Abstract

Related papers

Spectroscopy with nonclassical light

Abstract

Related papers