The Harvard Quantum Optics Center (HQOC) aims to foster research and education in quantum optical science. We support interdisciplinary research and educational activities in fundamental and applied sciences involving light-matter interactions, ultra-cold matter, quantum sensing, metrology, quantum control, and new, related interfaces with chemistry, biology, and information science. We also aid in the support of areas of condensed matter research that have some connection to quantum optics.

High Quality Factor Optical Nanouavities in Bulk Single-Crystal Diamong

Michael J. Burek, Yiwen Chu, Madelaine S.Z. Liddy, Parth Patel, Jake Rochman, Srujan Meesala, Wooyoung Hong, Qimin Quan, Mikhail D. Lukin, and Marko Lončar
Nature Communications 5, Article number: 5718 doi:10.1038/ncomms6718

Single-crystal diamond, with its unique optical, mechanical and thermal properties, has emerged as a promising material with applications in classical and quantum optics. However, the lack of heteroepitaxial growth and scalable fabrication techniques remain major limiting factors preventing more wide-spread development and application of diamond photonics...
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Deterministic coupling of delta-doped nitrogen vacancy centers to a nanobeam photonic crystal cavity

Jonathan C. Lee, David O. Bracher, Shanying Cui, Kenichi Ohno, Claire A. McLellan, Xingyu Zhang, Paolo Andrich, Benjamin Alemán, Kasey J. Russell, Andrew P. Magyar, Igor Aharonovich, Ania Bleszynski Jayich, David Awschalom, and Evelyn L. Hu
doi: 10.1063/1.4904909, published 29 Dec. 2014

The negatively charged nitrogen vacancy center (NV) in diamond has generated significant interest as a platform for quantum information processing and sensing in the solid state. For most applications, high quality optical cavities are required to enhance the NV zero-phonon line (ZPL) emission...
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Nonlinear optics using organic molecular aggregates

Felipe Herrera, Borja Peropadre, Semion Saikin, Leonardo Pachon, and Alan Aspuru-Guzik, manuscript in preparation.

The Aspuru-Guzik group is currently working in the development of solid-state nonlinear optical elements at the few photon level using organic molecular aggregates in optical microcavities. Motivated by experimental demonstrations of the ultrastrong coupling regime of cavity QED at room temperature, and the strong dipolar interactions between individual organic molecules, we seek to establish conditions for the propagation of slow light under conditions of electromagnetically-induced transparency...
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