Quantum memories are an integral component of quantum repeaters—devices that will
allow the extension of quantum key distribution to communication ranges beyond that …

We present an experimental study to achieve ultrahigh optical depths for cold atomic media
with a two-dimensional magneto-optical trap (MOT) of cesium. By combining large atom …

We report on an observation of stationary light pulses and narrowband light storage inside a
hollow-core photonic crystal fiber. Laser-cooled atoms were first loaded into the fiber core …

Quantum memories, devices that can store and retrieve photonic quantum states on
demand, are essential components for scalable quantum technologies. It is desirable to …

We investigate the evolution of a Zeeman coherence grating induced in a cold atomic
cesium sample in the presence of an external magnetic field. The gratings are created in a …

We performed an experiment to observe the storage of an input probe field and an idler field
generated through an off-axis four-wave mixing (FWM) process via a double-Λ configuration …

The burgeoning fields of quantum computing and quantum key distribution have created a
demand for a quantum memory. The gradient echo memory scheme is a quantum memory …

In this paper, we have demonstrated that optically generated fictitious magnetic fields can be
utilized to extend the lifetime of quantum memories in cold atomic ensembles. All the …

All-optical switching (AOS) or cross-phase modulation (XPM) based on the effect of
electromagnetically induced transparency (EIT) makes one photon switched or phase …

The effect of electromagnetically induced transparency (EIT) combined with Rydberg-state
atoms provides high optical nonlinearity to efficiently mediate the photon-photon interaction …