TY - GEN
T1 - Multi-loop feedback control for atom laser coherence
AU - Yanagisawa, Masahiro
AU - James, Matthew R.
PY - 2008
Y1 - 2008
N2 - In this paper we present a multi-loop measurement feedback control scheme to improve atom laser coherence. The first loop (proposed by Thomsen and Wiseman, 2002) aims to cancel the decohering effects of the nonlinear atom-atom interactions via direct measurement feedback. However, there are nonlinear interactions with the optical probe field used in the measurement scheme which may also contribute to a degradation in atom laser performance. Accordingly, we introduce a second feedback loop to implement a LQG controller to reduce these effects. The multi-loop design achieves improved atom laser coherence.
AB - In this paper we present a multi-loop measurement feedback control scheme to improve atom laser coherence. The first loop (proposed by Thomsen and Wiseman, 2002) aims to cancel the decohering effects of the nonlinear atom-atom interactions via direct measurement feedback. However, there are nonlinear interactions with the optical probe field used in the measurement scheme which may also contribute to a degradation in atom laser performance. Accordingly, we introduce a second feedback loop to implement a LQG controller to reduce these effects. The multi-loop design achieves improved atom laser coherence.
KW - Stochastic control
UR - http://www.scopus.com/inward/record.url?scp=79961020228&partnerID=8YFLogxK
U2 - 10.3182/20080706-5-KR-1001.0715
DO - 10.3182/20080706-5-KR-1001.0715
M3 - Conference contribution
SN - 9783902661005
T3 - IFAC Proceedings Volumes (IFAC-PapersOnline)
BT - Proceedings of the 17th World Congress, International Federation of Automatic Control, IFAC
T2 - 17th World Congress, International Federation of Automatic Control, IFAC
Y2 - 6 July 2008 through 11 July 2008
ER -