[20p-A404-1~18] 3.9 Optical quantum physics and technologies (formerly 3.10)

△ [20p-A404-7] The Effect of Phase Noise on Squeezed Light Measurement for the Generation of Large-Scale Cluster States

〇Takefumi Nomura¹, Tomohiro Nakamura¹, Mamoru Endo^1,2, Atsushi Sakaguchi², Takahiro Kashiwazaki³, Takeshi Umeki³, Kan Takase^1,2, Warit Asavanant^1,2, Jun-ichi Yoshikawa², Akira Furusawa^1,2 (1.The Univ. of Tokyo, 2.RIKEN, 3.NTT Device Technology Labs.)

Keywords:quantum optics, cluster states

In quantum optics, large time domain multiplexed cluster states are thought to be one of the key technology for implementing optical quantum computers. However, these optical systems require optical delay lines, which are known to cause deterioration of quantum states due to various noises such as laser phase noise. In this presentation, we will look into the effect of these noise caused by the optical delay lines and quantitatively evaluate tolerable length of the delay lines.