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quant-ph2007★ 29 cited
Exact minimum and maximum of yield with a finite number of decoy light intensities
Toyohiro Tsurumaru, Alexandre Soujaeff, Shigeki Takeuchi
In this paper, for the decoy state method using a finite number of decoy light intensities, we present an improved upper and lower bounds for the asymptotic yield y_n for n-photon…
quant-ph2007★ 4 cited
The effect of dissipation on quantum transmission resonance
Kohkichi Konno, Munehiro Nishida, Satoshi Tanda +1
Quantum transmissions of a free particle passing through a rectangular potential barrier with dissipation are studied using a path decomposition technique. Dissipative processes st…
quant-ph2004★ 2 cited
A study on the shape of two-photon wavefunctions after the nonlinear interaction with a one-dimensional atom
Kunihiro Kojima, Holger F. Hofmann, Shigeki Takeuchi +1
We study the interaction of Gaussian one- and two-photon pulses with a single two-level atom based on a one-dimensional model of pulse propagation to and from the atom. The charact…