Wineland, D. J., Bollinger, J. J., Itano, W. M., Moore, F. L. & Heinzen, D. J. Spin squeezing and reduced quantum noise in spectroscopy. Phys. Rev. A 46, R6797–R6800 (1992). Article ADS CAS PubMed Google Scholar Kitagawa, M. & Ueda, M. Squeezed spin states. Phys. Rev. A 47, 5138–5143 (1993). Article ADS CAS PubMed Google Scholar Meyer, V. et al. …
Read More »Spin squeezing in an ensemble of nitrogen–vacancy centres in diamond
