Quantum Imaging with Multiphotons and Light-matter Interaction: Narrowband Biphoton Generation, Quantum Imaging with Multiphoton Entanglement, Quantum Memory with Nonclassical Light

Quantum entanglement has recently attracted much attention because its unique properties provide novel applications, such as quantum computing and imaging, beyond conventional techniques. To realize these advancements, one has to have a reliable entanglement-generation source, master its physical properties, and understand light-matter interaction. This book aims at addressing such issues. Untilizing momentum-momentum correlation of biphotons, quantum imaging was initiated with photons created from spontaneous parametric down- conversion (SPDC). In this book, an alternative biphoton source - Raman-EIT (electromagnetically induced transparency) generator is introduced. The application in imaging is considered. To gain further insights into quantum imaging and lithography, we extend imaging with multiphoton entanglement. Specifically triphoton imaging with a W state is studied in details. To perform quantum computing and communication protocols, one key element is quantum memory. In this book, the feasibility of such a memory with use of nonclassical SPDC light in an EIT system is analyzed at the single-photon level.