TY - JOUR AU - Itano, Wayne AU - Bergquist, James AU - Bollinger, John AU - Gilligan, J AU - Heinzen, D AU - Moore, F AU - Raizen, M AU - Wineland, David C2 - Physical Review A (Atomic, Molecular and Optical Physics) DA - 1993-01-01 LA - en M1 - 47 PB - Physical Review A (Atomic, Molecular and Optical Physics) PY - 1993 TI - Quantum Projection Noise: Population Fluctuations in 2-Level Systems UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=104953 ER -