Quantum communication provides an absolute security advantage, and it has been widely
developed over the past 30 years. As an important branch of quantum communication …

Quantum memory for flying optical qubits is a key enabler for a wide range of applications in
quantum information. A critical figure of merit is the overall storage and retrieval efficiency …

Quantum memories are essential for quantum information processing. Techniques have
been developed for quantum memory based on atomic ensembles. The atomic memories …

We present and analyze a bichromatic version of the well-known saturation absorption
spectroscopy technique used to stabilize lasers to atomic resonances without Doppler …

The realization of an elementary quantum network that is intrinsically secure and operates
over long distances requires the interconnection of several quantum modules performing …

To achieve a high degree of quantum noise squeezing, an optical cavity is often employed
to enhance the interaction time between light and matter. Here, we propose to utilize the …

Multiphoton entangled states play a crucial role in quantum information applications such as
secure quantum communication, scalable computation, and high-precision quantum …

This chapter focuses on memories that are based on photon echoes. To overcome the
problems of population inversion and reabsorption, a number of photon echo schemes have …

This thesis proposes a means of implementing quantum information processing using
photonic qubits as information carriers. Electromagnetically-induced transparency …

The field of quantum information has recently seen remarkable progress regarding the
implementation of elementary quantum devices and quantum communication protocols. On …