Programmable and sequential Gaussian gates in a loop-based single-mode photonic quantum processor

Abstract

A quantum processor to import, process, and export optical quantum states is a common core technology enabling various photonic quantum information processing. However, there has been no photonic processor which is simultaneously universal, scalable, and programmable. Here, we report on an original loop-based single-mode versatile photonic quantum processor which is designed to be universal, scalable, and programmable. Our processor can perform arbitrarily many steps of programmable quantum operations on a given single-mode optical quantum state by time-domain processing in a dynamically controlled loop-based optical circuit. We use this processor to demonstrate programmable single-mode Gaussian gates and multi-step squeezing gates. In addition, we prove that the processor can perform universal quantum operations by injecting appropriate ancillary states and also be straightforwardly extended to a multi-mode processor. These results show that our processor is programmable, scalable, and potentially universal, leading to be suitable for general-purpose applications.

17 pages, 6 figures. 5 pages, 3 figures in the supplementary materials

References in corpus (8)

• Universal Quantum Computation with Continuous-Variable Cluster States
• Perspective: Toward large-scale fault-tolerant universal photonic quantum computing
• Generation of one-million-mode continuous-variable cluster state by unlimited time-domain multiplexing
• Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers
• Universal Quantum Computing with Measurement-Induced Continuous-Variable Gate Sequence in a Loop-Based Architecture
• Demonstration of deterministic and high fidelity squeezing of quantum information
• Gates for one-way quantum computation based on Einstein-Podolsky-Rosen entanglement
• Continuous-Variable Deep Quantum Neural Networks for Flexible Learning of Structured Classical Information

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