10 citations · 11 across the 2 of their papers we have counts for
3 papers
quant-ph2007★ 10 cited
Upper bound on our knowledge about noncommuting observables for a qubit system
Yuji Kurotani, Takahiro Sagawa, Masahito Ueda
A trade-off relation on our knowledge about two noncommuting observables of a qubit system in simultaneous measurement is formulated. The obtained inequality offers a quantitative…
quant-ph2006★ 1 cited
Circuit analysis of quantum measurement
Yuji Kurotani, Masahito Ueda
We develop a circuit theory that enables us to analyze quantum measurements on a two-level system and on a continuous-variable system on an equal footing. As a measurement scheme a…
cond-mat.mes-hall2005
Spin Polarization at Semiconductor Point Contacts in Absence of Magnetic Field
Mikio Eto, Tetsuya Hayashi, Yuji Kurotani
Semiconductor point contacts can be a useful tool for producing spin-polarized currents in the presence of spin-orbit (SO) interaction. Neither magnetic fields nor magnetic materia…