Kessler, EricLovchinsky, IgorSushkov, AlexanderLukin, Mikhail2014-06-022014Kessler, E. M., I. Lovchinsky, A. O. Sushkov, and M. D. Lukin. 2014. “Quantum Error Correction for Metrology.” Physical Review Letters 112 (15) (April).0031-90071079-7114http://nrs.harvard.edu/urn-3:HUL.InstRepos:12225546We propose and analyze a new approach based on quantum error correction (QEC) to improve quantum metrology in the presence of noise. We identify the conditions under which QEC allows one to improve the signal-to-noise ratio in quantum-limited measurements, and we demonstrate that it enables, in certain situations, Heisenberg-limited sensitivity. We discuss specific applications to nanoscale sensing using nitrogen-vacancy centers in diamond in which QEC can significantly improve the measurement sensitivity and bandwidth under realistic experimental conditions.en-USJournal Article2014-06-0210.1103/PhysRevLett.112.150802