Quantumness of gaussian and non-gaussian states in the optical domain

Hiroko Tomoda, Shuntaro Takeda

Daichi Okuno, Takato O. Yoshida, Ryoko Arita +7 more

We present a loop-based optical processor enabling time-domain programmable beam-splitter (BS) operations for a phase-sensitive non-Gaussian state. The loop itself is of high quality, allowing for storage of a non-Gaussian state for up to seven round trips while preserving its Wigner negativity and phase coherence. We perform various BS operations on a non-Gaussian state and evaluate them as transformations of the state's waveforms. Our work integrates non-Gaussian states with time multiplexing, laying the foundation for large-scale universal quantum information processing.

Ramniwas Meena, Subhashish Banerjee

Wenyi Zhu, Wei Zhong, Yu‐Bo Sheng

Daichi Okuno, Shuntaro Takeda

We present a loop-based optical processor compatible with probabilistically generated phase-sensitive non-Gaussian state. This processor enables storage of a non-Gaussian state for up to seven round trips while preserving its Wigner negativity and phase coherence. Our work integrates non-Gaussian states with time multiplexing, laying the foundation for large-scale universal quantum information processing.

Nicolas Treps