Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physical Review Letters

Squeezing of Quantum Fluctuations via Atomic Coherence Effects

M. D. Reid, Daniel F. Walls, Bryan J. Dalton

Published Sep 16, 1985• 45 citations
Publisher

Abstract

In the three-level medium a ${\ensuremath{\chi}}^{(3)}$ may be generated by atomic coherence effects which involve negligible saturation and, hence, are essentially "spontaneous-emission-free." This offers considerable experimental advantages for the generation of squeezed states of light via four-wave mixing or optical bistability.

DOI
10.1103/physrevlett.55.1288

Related papers

Squeezing of light via non-degenerate four-wave mixing in a system of three-level atoms

Nikolay N. Bogolubov, A.S. Shumovsky, Tran Quang

The generation of a squeezed state via non-degenerate four-wave mixing in a system of three-level atoms is discussed. The condition for receiving a nearly perfect squeezing is shown.

Journal of Physics B Atomic and Molecular Physics•Jul 14, 1987•2 citations

Current status of squeezed light generation

Daniel F. Walls, M. D. Reid

We review current theoretical and experimental work on squeezed light generation.1 Quantum treatments of four-wave mixing using a two-level atomic model and an anharmonic oscillator model of the medium are presented.2 The results are compared with experiments on four-wave mixing in atomic sodium3 and optical fibers.4 Methods to suppress spontaneous emission noise are discussed.

Annual Meeting Optical Society of America•Jan 1, 1985•0 citations

Generation of squeezed states of light via four-photon processes in systems of three-level atoms

Nikolay N. Bogolubov, A.S. Shumovsky, Tran Quang

Physics Letters A•Jun 1, 1986•7 citations

Squeezing in nondegenerate four-wave mixing

M. D. Reid, Daniel F. Walls

Ways to minimize spontaneous-emission noise due to quantum fluctuations in the medium are a major consideration in experiments designed to produce squeezed states of light. Motivated by the recent experiments of Slusher et al. we present a fully quantized model of nondegenerate four-wave mixing. We show that the spontaneous-emission noise, important at higher intensities in the degenerate case, may be minimized in the nondegenerate case for certain regimes of cavity and medium parameters.

Physical Review A•Jun 1, 1986•29 citations

Squeezed-light generation by four-wave mixing near an atomic resonance

Richard E. Slusher, Daniel F. Walls, M. D. Reid +3 more

Squeezed light generated by four-wave mixing near the Na atomic resonance is compared with a full quantum-theoretical model. Losses and dephasing that are due to spontaneous emission near the atomic resonance are included in this theoretical treatment. The experimental results show noise reduction greater than 1 dB below the standard quantum limits and are in good agreement with the quantum model at low pump intensities and large detuning. Theory and experiment show that limits to squeezed-light noise reduction resulting from spontaneous-emission losses can be largely avoided by using nondegenerate four-wave mixing and pump intensities near the atomic saturation values.

Journal of the Optical Society of America B•Oct 1, 1987•104 citations

Generation of squeezed light via spontaneous emission from a three-level cascade system

M.R Ferguson, Z. Ficek, Bryan J. Dalton

Optics Communications•Jun 1, 1996•0 citations
In the three-level medium a \ensuremathχ(3){\ensuremath{\chi}}^{(3)}\ensuremathχ(3) may be generated by atomic coherence effects which involve negligible saturation and, hence, are essentially "spontaneous-emission-free." This offers considerable experimental advantages for the generation of squeezed states of light via four-wave mixing or optical bistability.
Squeezed light generated by four-wave mixing near the Na atomic resonance is compared with a full quantum-theoretical model. Losses and dephasing that are due to spontaneous emission near the atomic resonance are included in this theoretical treatment. The experimental results show noise reduction greater than 1 dB below the standard quantum limits and are in good agreement with the quantum model at low pump intensities and large detuning. Theory and experiment show that limits to squeezed-light noise reduction resulting from spontaneous-emission losses can be largely avoided by using nondegenerate four-wave mixing and pump intensities near the atomic saturation values.