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Metamaterials, Metadevices, and Metasystems

Towards sensors and quantum registers using color center in diamond and nanophotonic structures (Conference Presentation)

Vladimir M. Shalaev, Mikhail Y. Shalaginov, Simeon Bogdanov, Vadim Vorobyov, Jing Liu, Alexey V. Akimov, Alexei Lagutchev, Joseph Irudayaraj, Alexander V. Kildishev, Alexandra E. Boltasseva

Published Nov 9, 2016• 0 citations
Publisher

Abstract

Metamaterials and metasurfaces can be seen as a novel approach for constructing practical quantum photonic systems. In this talk, we present our recent advances in controlling single-photon emission from nitrogen-vacancy (NV) color centers in nanodiamonds using CMOS-compatible hyperbolic metamaterials. Further, we discuss how an increased photonic density of states affects the optical readout of the NV center spin-state. These results can be useful for engineering on-chip room-temperature quantum registers.

DOI
10.1117/12.2240294

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Metamaterials and metasurfaces can be seen as a novel approach for constructing practical quantum photonic systems. In this talk, we present our recent advances in controlling single-photon emission from nitrogen-vacancy (NV) color centers in nanodiamonds using CMOS-compatible hyperbolic metamaterials. Further, we discuss how an increased photonic density of states affects the optical readout of the NV center spin-state. These results can be useful for engineering on-chip room-temperature quantum registers.
Light-matter interaction is the foundation for numerous important quantum optical phenomena, which may be harnessed to build practical devices with higher efficiency and unprecedented functionality. Nanoscale engineering is seen as a fruitful avenue to significantly strengthen light-matter interaction and also make quantum optical systems ultra-compact, scalable, and energy efficient. This research focuses on color centers in diamond that share quantum properties with single atoms. These systems promise a path for the realization of practical quantum devices such as nanoscale sensors, single-photon sources, and quantum memories. In particular, we explored an intriguing methodology of utilizing nanophotonic structures, such as hyperbolic metamaterials, nanoantennae, and plasmonic waveguides, to improve the color centers performance. We observed enhancement in the color center’s spontaneous emission rate, emission directionality, and cooperativity over a broad optical frequency range. Additionally, we studied the effect of plasmonic environments on the spin-readout sensitivity of color centers. The use of CMOS-compatible epitaxially grown plasmonic materials in the design of these nanophotonic structures promises a new level of performance for a variety of integrated room-temperature quantum devices based on diamond color centers.
Diamond color centers like the nitrogen-vacancy (NV) have shown much promise for nanoscale sensing of magnetic and electric fields and temperature. So far however the quantum properties of the NV have not been used to full advantage, for example quantum entanglement of NV qubits has rarely been used for sensing. In this talk I will review recent advances in the fabrication of NVs, and other magnetic color centers in diamond, and in the growth of high quality nanodiamonds. Combining these advances, I will discuss the future prospects of engineering quantum-enhanced sensors in nanodiamonds.
Synthetic diamond has recently emerged as a candidate material for a number of quantum applications, including quantum information processing and quantum sensing. In this talk, I will show how single nitrogen-vacancy (NV) color centers can be created near the diamond surface and used as nanoscale sensors of electric and magnetic fields. I will also demonstrate novel dynamical decoupling techniques allowing to improve the sensitivity of diamond quantum sensors and discuss applications of small-scale quantum registers for nanoscale NMR. Applications of NV centers for hyperpolarisation of nuclear spins and application of optical spin polarization in MRI will be presented.