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

Journal of the Optical Society of Korea

Spatial Information Transfer with a Stationary Coupling Wave in Rb Atoms

In Ho Bae, Han Seb Moon

Published Sep 25, 2008• 0 citations
Publisher

Abstract

We report on the spatial information of a coupling laser transfer into a reflected probe laser; the transfer is achieved by means of electromagnetically induced transparency through a common excited state connected with $5S_{1/2}-5P_{1/2}(F=1{\rightarrow}F'=2)$ in the $^{87}Rb\;D_1$ line. When the coupling laser was spatially modulated as a stationary wave, the absorption of the probe laser was enhanced and the reflection of the probe laser was generated. When the coupling laser was spatially modulated by a mask, we observed that the reflection light of the probe laser was modulated as the shape of the mask. The Bragg reflection transferred the spatial information of the coupling laser. The reflection was approximately 7% of the incident power of the probe laser.

DOI
10.3807/josk.2008.12.3.192

Related papers

Electromagnetically induced Bragg reflection with a stationary coupling field in a buffer rubidium vapor cell

In‐Ho Bae, Han Seb Moon, Min-Koeung Kim +2 more

An electromagnetically induced Bragg reflection with a stationary coupling field in an Rb vapor cell with a 6.67 kPa neon buffer gas was studied. When the coupling field was spatially modulated as a stationary wave, a transmission reduction of the probe field was observed, while simultaneously a reflected probe field was detected in the backward direction. Instead of absorbing a fraction of the probe laser in the Rb vapor, the modulated electromagnetically induced transparency medium reflected it, corresponding to a Bragg reflection. The spectrum in the 5S(1/2)-5P(1/2)Lambda-type system of (87)Rb atoms was investigated as a function of the coupling laser frequency detuning, the stationary coupling laser power, the vapor cell temperature, and the coupling laser power ratio.

Applied Optics•Sep 10, 2008•10 citations

Transformation of electromagnetically induced transparency into enhanced absorption with a standing-wave coupling field in an Rb vapor cell

In‐Ho Bae, Han Seb Moon, Min-Koeung Kim +2 more

We present the transformation of electromagnetically induced transparency (EIT) into narrow enhanced absorption with an on-resonant standing-wave coupling field in the 5S(1/2)-5P(1/2) transition of the Lambda-type system of (87)Rb atoms. When a coupling laser field was changed from a travelling-wave to a standing-wave that was made by adding a counter-propagating L(C) laser, the transmittance spectrum of the L(P) laser transformed the typical EIT into dramatically enhanced absorption, and a Bragg reflection signal was generated by the periodic modulation of atomic absorption. The reflected probe laser corresponding to a Bragg reflection was measured to be approximately 11.5% of the power of the incident probe laser. We analyzed the enhanced absorption signal and Bragg reflection spectrum as a function of the power and frequency detuning of the coupling laser.

Optics Express•Jan 12, 2010•37 citations

Quantum interference effects studied experimentally in the D_2 line of ~(85) Rb vapour

Tu Xian

The paper report an experimental observation of the electromagnetically induced transparency (EIT) in the D 2 line of 85 Rb atoms. When a coupling laser for 5S 1/2 ,F=3→5P 3/2 ,F′ is Raman resonant to the probe laser in 5S 1/2 ,F=2→5P 3/2 ,F′ , EIT peaks apparently appear. Under certain conditions, absorption enhancement due to the electromagnetically induced absorption (EIA) was also recorded together with the EIT. A lambda coupling scheme with two strong lasers (a coupling laser and a pumping laser) was realized, the spectrum of the probe laser exhibits more complex structure, revealing rich quantum coherence interactions.

Chinese journal of atomic and molecular physics•Jan 1, 2002•0 citations

Continuous control of light group velocity from subluminal to superluminal propagation with a standing-wave coupling field in a Rb vapor cell

In‐Ho Bae, Han Seb Moon

We present the continuous control of the light group velocity from subluminal to superluminal propagation with an on-resonant standing-wave coupling field in the $5{S}_{1/2}$--$5{P}_{1/2}$ transition of the $\ensuremath{\Lambda}$-type system of $^{87}\mathrm{Rb}$ atoms. When a coupling field was changed from a traveling-wave to a standing-wave field by adjusting the power of a counterpropagating coupling field, the probe pulse propagation continuously transformed from subluminal propagation, due to electromagnetically induced transparency with the traveling-wave coupling field, to superluminal propagation, due to narrow enhanced absorption with the standing-wave coupling field. The group velocity of the probe pulse was measured to be approximately 0.004$c$ to $\ensuremath{-}$0.002$c$ as a function of the disparity between the powers of the copropagating and the counterpropagating coupling fields.

Physical Review A•May 5, 2011•28 citations

Subwavelength Localization of Atomic Excitation Using Electromagnetically Induced Transparency

Jared A. Miles, Zach J. Simmons, Deniz D. Yavuz

We report an experiment in which an atomic excitation is localized to a spatial width that is a factor of 8 smaller than the wavelength of the incident light.The experiment utilizes the sensitivity of the dark state of electromagnetically induced transparency (EIT) to the intensity of the coupling laser beam.A standing-wave coupling laser with a sinusoidally varying intensity yields tightly confined Raman excitations during the EIT process.The excitations, located near the nodes of the intensity profile, have a width of 100 nm.The experiment is performed using ultracold 87 Rb atoms trapped in an optical dipole trap, and atomic localization is achieved with EIT pulses that are approximately 100 ns long.To probe subwavelength atom localization, we have developed a technique that can measure the width of the atomic excitations with nanometer spatial resolution.

Physical Review X•Sep 11, 2013•69 citations

Modulation transfer protocol for Rydberg RF receivers: theory and experiments

Duc-Anh Trinh, Mickael Branco, K. V. Adwaith +5 more

We present a modulation-transfer method to in- crease the detection bandwidth of the Rydberg RF receivers based on three-level Electromagnetically Induced Transparency (EIT) in Rubidium vapor. In this scheme, we phase-modulate the coupling laser to generate sidebands. The nonlinear wave- mixing in the atomic ensemble transfers the modulation from the coupling to the probe laser. The beat note detected in the probe laser intensity provides a new detection response to the RF field. The recorded results show a higher detection sensitivity to the detuned RF field, thus extending the bandwidth of the detector.

Optical and Quantum Sensing and Precision Metrology II•Mar 19, 2025•0 citations
We report on the spatial information of a coupling laser transfer into a reflected probe laser; the transfer is achieved by means of electromagnetically induced transparency through a common excited state connected with 5S1/2−5P1/2(F=1→F′=2)5S_{1/2}-5P_{1/2}(F=1{\rightarrow}F'=2)5S1/2​−5P1/2​(F=1→F′=2) in the 87Rb  D1^{87}Rb\;D_187RbD1​ line. When the coupling laser was spatially modulated as a stationary wave, the absorption of the probe laser was enhanced and the reflection of the probe laser was generated. When the coupling laser was spatially modulated by a mask, we observed that the reflection light of the probe laser was modulated as the shape of the mask. The Bragg reflection transferred the spatial information of the coupling laser. The reflection was approximately 7% of the incident power of the probe laser.
An electromagnetically induced Bragg reflection with a stationary coupling field in an Rb vapor cell with a 6.67 kPa neon buffer gas was studied. When the coupling field was spatially modulated as a stationary wave, a transmission reduction of the probe field was observed, while simultaneously a reflected probe field was detected in the backward direction. Instead of absorbing a fraction of the probe laser in the Rb vapor, the modulated electromagnetically induced transparency medium reflected it, corresponding to a Bragg reflection. The spectrum in the 5S(1/2)-5P(1/2)Lambda-type system of (87)Rb atoms was investigated as a function of the coupling laser frequency detuning, the stationary coupling laser power, the vapor cell temperature, and the coupling laser power ratio.
We present the transformation of electromagnetically induced transparency (EIT) into narrow enhanced absorption with an on-resonant standing-wave coupling field in the 5S(1/2)-5P(1/2) transition of the Lambda-type system of (87)Rb atoms. When a coupling laser field was changed from a travelling-wave to a standing-wave that was made by adding a counter-propagating L(C) laser, the transmittance spectrum of the L(P) laser transformed the typical EIT into dramatically enhanced absorption, and a Bragg reflection signal was generated by the periodic modulation of atomic absorption. The reflected probe laser corresponding to a Bragg reflection was measured to be approximately 11.5% of the power of the incident probe laser. We analyzed the enhanced absorption signal and Bragg reflection spectrum as a function of the power and frequency detuning of the coupling laser.
The paper report an experimental observation of the electromagnetically induced transparency (EIT) in the D 2 line of 85 Rb atoms. When a coupling laser for 5S 1/2 ,F=3→5P 3/2 ,F′ is Raman resonant to the probe laser in 5S 1/2 ,F=2→5P 3/2 ,F′ , EIT peaks apparently appear. Under certain conditions, absorption enhancement due to the electromagnetically induced absorption (EIA) was also recorded together with the EIT. A lambda coupling scheme with two strong lasers (a coupling laser and a pumping laser) was realized, the spectrum of the probe laser exhibits more complex structure, revealing rich quantum coherence interactions.
We present the continuous control of the light group velocity from subluminal to superluminal propagation with an on-resonant standing-wave coupling field in the 5S1/25{S}_{1/2}5S1/2​--5P1/25{P}_{1/2}5P1/2​ transition of the $\ensuremath{\Lambda}$-type system of 87Rb^{87}\mathrm{Rb}87Rb atoms. When a coupling field was changed from a traveling-wave to a standing-wave field by adjusting the power of a counterpropagating coupling field, the probe pulse propagation continuously transformed from subluminal propagation, due to electromagnetically induced transparency with the traveling-wave coupling field, to superluminal propagation, due to narrow enhanced absorption with the standing-wave coupling field. The group velocity of the probe pulse was measured to be approximately 0.004ccc to $\ensuremath{-}0.0020.0020.002c$ as a function of the disparity between the powers of the copropagating and the counterpropagating coupling fields.
We report an experiment in which an atomic excitation is localized to a spatial width that is a factor of 8 smaller than the wavelength of the incident light.The experiment utilizes the sensitivity of the dark state of electromagnetically induced transparency (EIT) to the intensity of the coupling laser beam.A standing-wave coupling laser with a sinusoidally varying intensity yields tightly confined Raman excitations during the EIT process.The excitations, located near the nodes of the intensity profile, have a width of 100 nm.The experiment is performed using ultracold 87 Rb atoms trapped in an optical dipole trap, and atomic localization is achieved with EIT pulses that are approximately 100 ns long.To probe subwavelength atom localization, we have developed a technique that can measure the width of the atomic excitations with nanometer spatial resolution.
We present a modulation-transfer method to in- crease the detection bandwidth of the Rydberg RF receivers based on three-level Electromagnetically Induced Transparency (EIT) in Rubidium vapor. In this scheme, we phase-modulate the coupling laser to generate sidebands. The nonlinear wave- mixing in the atomic ensemble transfers the modulation from the coupling to the probe laser. The beat note detected in the probe laser intensity provides a new detection response to the RF field. The recorded results show a higher detection sensitivity to the detuned RF field, thus extending the bandwidth of the detector.