Demonstration of quantum non-demolition readout for a mesoscopic NV-center spin ensemble in diamond that reaches 3.8 dB below thermal projection noise and approaches intrinsic spin projection noise.
The rate of NV centers formed for each Nitrogen atom in this non-annealed sample is assumed on the order of 0
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Readout of a solid state spin ensemble at the projection noise limit
Demonstration of quantum non-demolition readout for a mesoscopic NV-center spin ensemble in diamond that reaches 3.8 dB below thermal projection noise and approaches intrinsic spin projection noise.