Zhu Fei-Yun et al 2009 Chinese Phys. Lett. 26 050301 doi:10.1088/0256-307X/26/5/050301
Zhu Fei-Yun1, Tu Tao1, Hao Xiao-Jie1, Guo Guang-Can1 and Guo Guo-Ping1
Show affiliationsWe study the time evolution of two electron spin states in a double quantum-dot system, which includes a nearby quantum point contact (QPC) as a measurement device. We find that the QPC measurement induced decoherence is in the microsecond timescale. We also find that the enhanced QPC measurement will trap the system in its initial spin states, which is consistent with the quantum Zeno effect.
Issue 5 (May 2009)
Received 12 January 2009
Zhu Fei-Yun et al 2009 Chinese Phys. Lett. 26 050301
Klaus Dolag et al JCAP01(2005)009
Ingo Schienbein et al 2008 J. Phys. G: Nucl. Part. Phys. 35 053101
Joële Viallon et al 2008 Metrologia 45 08008
Margaret Cheney and Brett Borden 2008 Inverse Problems 24 035005
L Baggio et al 2008 Class. Quantum Grav. 25 095004
Petra Spitzer et al 2008 Metrologia 45 08006
C S J Wolff Briche 2003 Metrologia 40 08010
A V Lyashenko et al 2007 JINST 2 P08004
Ruth Hearn et al 2008 Metrologia 45 08001