Creation of macroscopic quantum superposition states by a measurement

被引：10
作者：
Mazets, I. E. [1 ,2 ]
Kurizki, G. [3 ]
Oberthaler, M. K. [4 ]
Schmiedmayer, J. [2 ]
机构：
[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] Atominst Osterreich Univ, A-1020 Vienna, Austria
[3] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel
[4] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany
来源：
EPL | 2008年 / 83卷 / 06期
基金：
奥地利科学基金会;
关键词：
D O I：
10.1209/0295-5075/83/60004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a novel protocol for the creation of macroscopic quantum superposition (MQS) states based on a measurement of a non-monotonous function of a quantum collective variable. The main advantage of this protocol is that it does not require switching on and off nonlinear interactions in the system. We predict this protocol to allow the creation of multiatom MQS by measuring the number of atoms coherently outcoupled from a two-component (spinor) Bose-Einstein condensate. Copyright c (c) EPLA, 2008
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页数：5
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