Low-light-level nonlinear optics with slow light

Braje, Danielle; Balić, Vlatko; Yin, G. Y.; Harris, S. E.

doi:10.1103/physreva.68.041801

Cited by 250 publications

(171 citation statements)

References 23 publications

Supporting

Mentioning

165

Contrasting

Order By: Relevance

“…4(a)] [9]. In this scheme, the switching photons interact with flipped atomic spins (state j2i) within the dark-state polariton, causing a simultaneous absorption of a probe and a switch photon [23,24]. Switching is achieved when all three light fields involved (probe, control, and switching field) are overlapping within the atomic cloud [ Fig.…”

Section: Prl 102 203902 (2009) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

Optical switching with cold atoms

Dawes¹

2009

Physics

View full text Add to dashboard Cite

We demonstrate a fiber-optical switch that is activated at tiny energies corresponding to a few hundred optical photons per pulse. This is achieved by simultaneously confining both photons and a small lasercooled ensemble of atoms inside the microscopic hollow core of a single-mode photonic-crystal fiber and using quantum optical techniques for generating slow light propagation and large nonlinear interaction between light beams.

show abstract

Section: Prl 102 203902 (2009) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

Optical switching with cold atoms

Dawes¹

2009

Physics

View full text Add to dashboard Cite

show abstract

“…We take EIT measurements to characterize the 2D MOT properties. EIT, 14 as a quantum interference between atomic transitions, has been widely used to manipulate optical response of an atomic medium, and found its wide applications in slow light, 39 nonlinear wave mixing, 18 optical switching, 16,17 entangled photon pair generation, [20][21][22] optical quantum memory, 51 and quantum information processing. 23 The EIT measurement scheme is shown in Fig.…”

Section: Magnetic Coil Designmentioning

confidence: 99%

“…12,13 The temperature of cold atoms in a MOT, typically ranging from tens to hundreds micron Kelvin (μK), in which the inhomogeneous Doppler broadening is negligible as compared to the atomic natural linewidth, is ideal for studying photon-atom interactions at quantum mechanics level without requiring further complicated sub-μK cooling techniques. Recently, many research efforts have been explored in using cold atoms in MOT to control and manipulate quantum interaction between photons and atoms, such as electromagnetically induced transparency (EIT), 14,15 low-light level nonlinear optics, [16][17][18] optical storage, 19 and entangled photon pair generation. [20][21][22] Motivated by the Duan, Lukin, Cirac, and Zoller (DLCZ) protocol, 23 MOTs with the EIT configuration may act as standard quantum repeaters and nodes in a long-distance quantum communication network.…”

Section: Introductionmentioning

confidence: 99%

A dark-line two-dimensional magneto-optical trap of 85Rb atoms with high optical depth

Zhang¹,

Chen²,

Liu³

et al. 2012

Review of Scientific Instruments

View full text Add to dashboard Cite

We describe the apparatus of a dark-line two-dimensional (2D) magneto-optical trap (MOT) of 85Rb cold atoms with high optical depth (OD). Different from the conventional configuration, two (of three) pairs of trapping laser beams in our 2D MOT setup do not follow the symmetry axes of the quadrupole magnetic field: they are aligned with 45° angles to the longitudinal axis. Two orthogonal repumping laser beams have a dark-line volume in the longitudinal axis at their cross over. With a total trapping laser power of 40 mW and repumping laser power of 18 mW, we obtain an atomic OD up to 160 in an electromagnetically induced transparency (EIT) scheme, which corresponds to an atomic-density-length product NL = 2.05 × 1015 m−2. In a closed two-state system, the OD can become as large as more than 600. Our 2D MOT configuration allows full optical access of the atoms in its longitudinal direction without interfering with the trapping and repumping laser beams spatially. Moreover, the zero magnetic field along the longitudinal axis allows the cold atoms maintain a long ground-state coherence time without switching off the MOT magnetic field, which makes it possible to operate the MOT at a high repetition rate and a high duty cycle. Our 2D MOT is ideal for atomic-ensemble-based quantum optics applications, such as EIT, entangled photon pair generation, optical quantum memory, and quantum information processing.

show abstract

“…These transitions have found applications in alloptical switches [11,17,18], single-photon generation [19], and photon coherence measurements and quantum logic gates [20,21]. Furthermore, multiphoton transitions can excite into long-lived atomic states with their inherently narrow linewidths: these have been beneficial for frequency metrology applications such as atomic clocks and frequency stabilization [22,23].…”

Section: Introductionmentioning

confidence: 99%

Anomalous two-photon spectral features in warm rubidium vapor

et al. 2016

View full text Add to dashboard Cite

We report observation of anomalous fluorescence spectral features in the environs of a two-photon transition in a rubidium vapor when excited with two different wavelength lasers that are both counterpropagating through the vapor. These features are characterized by an unusual trade-off between the detunings of the driving fields. Three different hypothetical processes are presented to explain the observed spectra: a simultaneous three-atom and four-photon collision, a four-photon excitation involving a light field produced via amplified spontaneous emission, and population pumping perturbing the expected steady-state spectra. Numerical modeling of each hypothetical process is presented, supporting the population pumping process as the most plausible mechanism.

show abstract

Low-light-level nonlinear optics with slow light

Cited by 250 publications

References 23 publications

Optical switching with cold atoms

Optical switching with cold atoms

A dark-line two-dimensional magneto-optical trap of 85Rb atoms with high optical depth

Anomalous two-photon spectral features in warm rubidium vapor

Contact Info

Product

Resources

About