# Universal Quantum Computing with Measurement-Induced Continuous-Variable Gate Sequence in a Loop-Based Architecture

## TL;DR

This paper introduces a scalable, loop-based optical quantum computing scheme that uses measurement-induced continuous-variable gates, enabling universal and fault-tolerant quantum computation with minimal resources.

## Contribution

It presents a novel architecture for optical quantum computing that is scalable, resource-efficient, and capable of universal, fault-tolerant quantum processing using measurement-induced gates.

## Key findings

- Supports processing any input state and number of modes
- Enables universal gate set for qubits and continuous variables
- Allows fault-tolerant quantum computing with known encoding schemes

## Abstract

We propose a scalable scheme for optical quantum computing using measurement-induced continuous-variable quantum gates in a loop-based architecture. Here, time-bin-encoded quantum information in a single spatial mode is deterministically processed in a nested loop by an electrically programmable gate sequence. This architecture can process any input state and an arbitrary number of modes with almost minimum resources, and offers a universal gate set for both qubits and continuous variables. Furthermore, quantum computing can be performed fault-tolerantly by a known scheme for encoding a qubit in an infinite dimensional Hilbert space of a single light mode.