Rapid state reduction of quantum systems using feedback control.
作者： Joshua Combes , Kurt Jacobs
DOI: 10.1103/PHYSREVLETT.96.010504
关键词:
摘要: We consider using Hamiltonian feedback control to increase the speed at which a continuous measurement purifies (reduces) state of quantum system, and thus preparation pure states. For an observable with $N$ equispaced eigenvalues, we show that there exists algorithm will up rate reduction by least factor $2(N+1)/3$.
arxiv.org
unirioja.es
harvard.edu
sci-hub.se 参考文章(27)
B. E. Kane, A silicon-based nuclear spin quantum computer Nature. ,vol. 393, pp. 133- 137 ,(1998) , 10.1038/30156
Howard Carmichael, An open systems approach to quantum optics ,(1993)
David J. Tannor, Allon Bartana, On the Interplay of Control Fields and Spontaneous Emission in Laser Cooling Journal of Physical Chemistry A. ,vol. 103, pp. 10359- 10363 ,(1999) , 10.1021/JP992544X
H. M. Wiseman, G. J. Milburn, Quantum theory of field-quadrature measurements. Physical Review A. ,vol. 47, pp. 642- 662 ,(1993) , 10.1103/PHYSREVA.47.642
Shlomo E. Sklarz, David J. Tannor, Navin Khaneja, Optimal control of quantum dissipative dynamics: Analytic solution for cooling the three-levelΛsystem Physical Review A. ,vol. 69, pp. 053408- ,(2004) , 10.1103/PHYSREVA.69.053408
Christopher A. Fuchs, Kurt Jacobs, Information-tradeoff relations for finite-strength quantum measurements Physical Review A. ,vol. 63, pp. 062305- ,(2001) , 10.1103/PHYSREVA.63.062305
A Barchielli, Quantum stochastic differential equations: an application to the electron shelving effect Journal of Physics A. ,vol. 20, pp. 6341- 6355 ,(1987) , 10.1088/0305-4470/20/18/034
Kurt Jacobs, How to project qubits faster using quantum feedback Physical Review A. ,vol. 67, pp. 030301- ,(2003) , 10.1103/PHYSREVA.67.030301
V.P. Belavkin, P. Staszewski, A quantum particle undergoing continuous observation Physics Letters A. ,vol. 140, pp. 359- 362 ,(1989) , 10.1016/0375-9601(89)90067-4
M. R. James, Risk-sensitive optimal control of quantum systems Physical Review A. ,vol. 69, pp. 032108- ,(2004) , 10.1103/PHYSREVA.69.032108