Photophysics of novel diamond based single photon emitters
I. Aharonovich, S. Castelletto, D. A. Simpson, A. D. Greentree, S., Prawer
TL;DR
This paper investigates the photophysical properties of novel diamond color centers, revealing their potential as efficient near-infrared single photon emitters with unique quantum behaviors.
Contribution
It provides new insights into the emission characteristics and quantum efficiency evaluation of these novel diamond-based single photon emitters.
Findings
Emitters show narrow near-infrared luminescence lines.
Single photon emission verified with high emission rates.
Some emitters exhibit two-level behavior without bunching.
Abstract
A detailed study of the photophysical properties of several novel color centers in chemical vapor deposition diamond is presented. These emitters show narrow luminescence lines in the near infra-red. Single photon emission was verified with continuous and pulsed excitation with emission rates at saturation in the MHz regime, whilst direct lifetime measurements reveal excited state lifetimes ranging from 1-14 ns. In addition, a number of quantum emitters demonstrate two level behavior with no bunching present in the second order correlation function. An improved method of evaluating the quantum efficiency through the direct measurement of the collection efficiency from two level emitters is presented and discussed. \
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