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quant-ph2002★ 10 cited
Experimental investigation of pulsed entangled photons and photonic quantum channels
Yoshihiro Nambu, Koji. Usami, Akihisa Tomita +5
The development of key devices and systems in quantum information technology, such as entangled particle sources, quantum gates and quantum cryptographic systems, requires a reliab…
quant-ph2002★ 42 cited
A New Strategy of Quantum-State Estimation for Achieving the Cramer-Rao Bound
Koji Usami, Yoshihiro Nambu, Yoshiyuki Tsuda +2
We experimentally analyzed the statistical errors in quantum-state estimation and examined whether their lower bound, which is derived from the Cramer-Rao inequality, can be truly…