All posts by cmeriles_1ry5wvws
12-19: Farewell to Hari. Best of luck in Minnesota!
11-19: Mingxing’s baby is born! Congratulations to the new dad!
10-19: Prof. Rodolfo Acosta from the Universidad Nacional de Cordoba joins us for a two-week stay

10-19: Mishkatul Bhattacharya from the Rochester Institute of Technology tells us about how to engineer a phonon laser

Optical Tweezer Phonon Laser
09-19: Sakib presents his poster at the ORCA meeting.

08-19: Jake’s and Daniela’s paper accepted in PNAS!
Optical spin pumping of color centers promises to revolutionize the practice of nuclear magnetic resonance via efficient dynamic nuclear polarization (DNP) protocols. Significant progress has been attained with systems such as the nitrogen-vacancy (NV) center in diamond, but extreme spectral broadening and nuclear spin-lattice relaxation from co-existing paramagnetic defects are hurdles still difficult to circumvent. The technique we present in this manuscript addresses both issues through the implementation of magnetic-field-sweep-induced NV cross-relaxation with ancilla point defects, here acting as proxies to mediate the transfer of polarization to the nuclear spin ensemble. The governing spin dynamics is robust to field misalignment and ideally suited for shallow NVs, indirectly coupled to outside nuclei through paramagnetic defects at the diamond surface.