Quantum arbitrary waveform generator

Abstract

Controlling the waveform of light is the key for a versatile light source in classical and quantum electronics. Although pulse shaping of classical light is a mature technique and has been used in various fields, more advanced applications would be realized by a light source that generates arbitrary quantum light with arbitrary temporal waveform. We call such a device a quantum arbitrary waveform generator (Q-AWG). The Q-AWG must be able to handle versatile quantum states of light, which are fragile. Thus, the Q-AWG requires a radically different methodology from classical pulse shaping. In this paper, we invent an architecture of Q-AWGs that can operate semi-deterministically at a repetition rate over GHz in principal. We demonstrate its core technology via generating highly non-classical states with waveforms that have never been realized before. This result would lead to powerful quantum technologies based on Q-AWGs such as practical optical quantum computing.

24 pages, 5 figures

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• Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength
• Scalable protocol to mitigate $ZZ$ crosstalk in universal quantum gates
• Time-domain programmable beam-splitter operations for an optical phase-sensitive non-Gaussian state
• Scalable Optical Quantum State Synthesizer with Dual-Mode Resonator Memory
• Where are the photons in a transmission-line pulse?