Quantum Optics - Nanophotonics - Metrology 

Quantum Silicon Photonics for unconditionally secure communication and other quantum technologies	Quantum-Enhanced Detectors for real-time imaging of neural activity in the brain; solid-state atomic clocks	Classical and quantum information processing devices and systems	Solar Photovoltaics: how to harvest nearly all sunlight with just 30 nm of active material
Modern silicon photonics for high-performance quantum information processing, such as QKD protocols running at 10 bits per photon.	Ultrasensitive measurements/quantum metrology to detect weak fields & forces in biology, chemistry, and physics; atomic clock analogs using electron spin states in diamond.	Guiding light at the wavelength-scale for new optoelectronic devices with ultra-low power consumption for next-generation computing and communication systems.	Light trapping in thin film solar cells, in particular organic photovoltaics.

The Quantum Photonics Group is led by Dirk Englund, Assistant Professor of Electrical Engineering and of Applied Physics in Columbia University's School of Engineering and Applied Science.

Announcements: 

• Research opportunities for Columbia Master's students posted here
• We have openings for outstanding researchers in nanophotonics, optical networks, and quantum optics [more]

• Congrats to Hannah on a 2012 NSF Graduate Research Fellowship!
• Dirk is awarded a 2012 DARPA Young Faculty Award
• Congrats to Ed and Hannah on receiving NASA Space Technology Research Fellowships (NSTRF)!!
• We are starting a new interdisciplinary Keck Foundation Program: ``Watching the Brain at Work: Imaging Neuronal Activity with Diamond Nanoprobes''  -- D. Englund, Jonathan Owen (Chemistry), Rafael Yuste (Biology) [Columbia News;  Keck annoucement]
• The White House supports our research through the  Presidential Early Career Award for Scientists and Engineers (PECASE) ; Columbia news
• We are starting a new collaborative program to develop Multi-Functional Light-Matter Interfaces based on Neutral Atoms and Solids  [press announcement]
• SEAS article: Transmitting Information Securely
• The Columbia RISE program supports our research on biochemical sensors, in collaboration with the group of Jon Owen (Chemistry) [2011]
• Dirk receives Sloan Research Fellowship in Physics [more] [2011]
• Our research on quantum networks on nanophotonic chips is supported by the AFOSR Young Investigator Program [more], [Dec. 2010]
• We are beginning a DARPA-DSO sponsored project to develop photon-efficient quantum communication using chip-based architecture (DARPA InPho program) [Aug. 2010]