Physics – Quantum Physics
Scientific paper
2002-08-27
J. Phys. B: At. Mol. Opt. Phys. 35 (2002) 4937-4952
Physics
Quantum Physics
17 pages, 5 figures, submitted to JPB
Scientific paper
10.1088/0953-4075/35/23/316
We discuss the theory and experimental considerations of a quantum feedback scheme for producing deterministically reproducible spin squeezing. Continuous nondemolition atom number measurement from monitoring a probe field conditionally squeezes the sample. Simultaneous feedback of the measurement results controls the quantum state such that the squeezing becomes unconditional. We find that for very strong cavity coupling and a limited number of atoms, the theoretical squeezing approaches the Heisenberg limit. Strong squeezing will still be produced at weaker coupling and even in free space (thus presenting a simple experimental test for quantum feedback). The measurement and feedback can be stopped at any time, thereby freezing the sample with a desired amount of squeezing.
Mancini Stefano
Thomsen L. K.
Wiseman Howard M.
No associations
LandOfFree
Continuous quantum nondemolition feedback and unconditional atomic spin squeezing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Continuous quantum nondemolition feedback and unconditional atomic spin squeezing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous quantum nondemolition feedback and unconditional atomic spin squeezing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-644672