Conference on Lasers and Electro-Optics

Generation of biphotons with controllable temporal length

Chinmay Belthangady, Shengwang Du, Pavel Kolchin, G. Y. Yin, Stephen E. Harris

Published May 4, 2008• 0 citations

Abstract

We report the generation of time-energy entangled paired photons with subnatural linewidths and controllable temporal lengths. The photons are generated using EIT and slow light in a high optical depth two-dimensional MOT.

DOI: 10.1109/qels.2008.4553090

Related papers

Generation of Subnatural Linewidth Biphotons

Shengwang Du, Pavel Kolchin, Chinmay Belthangady +2 more

We describe the generation of time-energy entangled bipotons with a subnatural linewidth and a correlation time of about 100 ns. We use electromagnetically-induced transparency in a 85Rb two-dimensional magneto-optical trap.

Frontiers in OpticsJan 1, 20070 citations

Subnatural Linewidth Biphotons with Controllable Temporal Length

Shengwang Du, Pavel Kolchin, Chinmay Belthangady +2 more

This Letter describes the generation of biphotons with a temporal length that can be varied over the range of 50-900 ns, with an estimated subnatural linewidth as small as 0.75 MHz. We make use of electromagnetically induced transparency and slow light in a two-dimensional magneto-optical trap with an optical depth as high as 62. We report a sharp leading edge spike that is a Sommerfeld-Brillouin precursor, as observed at the biphoton level.

Physical Review LettersMay 8, 2008218 citations

Modulation of Single Photons and Biphotons

S. E. Harris

We generate photons with sub-natural linewidths and temporal lengths that are sufficiently long that they may be easily modulated. Results include a new technique for measuring the temporal shape of biphotons. Article not Available.

Advances in Optical Sciences CongressJan 1, 20090 citations

Single Photons with Arbitrary Waveforms

Pavel Kolchin, Chinmay Belthangady, Shengwang Du +2 more

We use EIT to generate biphotons with a temporal width of about 400 ns. A detected Stokes photon sets the time origin for electro-optic modulation (amplitude or phase) of an anti-Stokes photon.

Quantum Electronics and Laser Science ConferenceMay 4, 20081 citation

Generation of ultrabright biphotons made easy

Valdas Pašiškevičius

We calculate the properties of a biphoton source based on resonant backward-wave spontaneous parametric down conversion.We show that the biphotons are generated in a single longitudinal mode having a subnatural linewidth and a Glauber correlation time exceeding 65 ns.

PhysicsJun 20, 20110 citations

Slow Light with Fourth Order Fields

Curtis J. Broadbent, Praveen K. Vudyasetu, Ryan M. Camacho +2 more

We demonstrate experimentally the preservation of entanglement between delayed and non-delayed members of energy-time entangled biphotons, as well as the preservation of fourth order temporal coherence of thermal light with a delayed version of itself.

Slow and Fast Light (SL)Jan 1, 20080 citations