TY - JOUR
T1 - Engineering steady states using jump-based feedback for multipartite entanglement generation
AU - Stevenson, R. N.
AU - Hope, J. J.
AU - Carvalho, A. R.R.
PY - 2011/8/25
Y1 - 2011/8/25
N2 - We investigate the use of quantum-jump-based feedback to manipulate the stability of multipartite entangled dark states in an open quantum system. Using the model proposed in Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.76.010301 76, 010301(R) (2007) for a pair of atoms, we show a general strategy to produce many-body singlet stationary entangled states for larger number of atoms. In the case of four qubits, we propose a simple local feedback control that, although not optimal, is realistic and stabilizes a highly entangled state. We discuss the limitations and analyze alternative strategies within the framework of direct jump feedback schemes.
AB - We investigate the use of quantum-jump-based feedback to manipulate the stability of multipartite entangled dark states in an open quantum system. Using the model proposed in Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.76.010301 76, 010301(R) (2007) for a pair of atoms, we show a general strategy to produce many-body singlet stationary entangled states for larger number of atoms. In the case of four qubits, we propose a simple local feedback control that, although not optimal, is realistic and stabilizes a highly entangled state. We discuss the limitations and analyze alternative strategies within the framework of direct jump feedback schemes.
UR - http://www.scopus.com/inward/record.url?scp=80052289136&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.84.022332
DO - 10.1103/PhysRevA.84.022332
M3 - Article
SN - 1050-2947
VL - 84
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 022332
ER -