Multi-scale architecture for fast optical addressing and control of large scale qubit arrays

TL;DR

This paper introduces a hybrid optical system combining a fast deflector and a slow spatial light modulator to enable rapid, site-selective control of large qubit arrays, significantly improving addressing speed for quantum computing.

Contribution

It proposes a novel multi-scale architecture that enhances quantum state manipulation speed by partitioning the SLM and integrating a fast deflector, enabling faster quantum gate operations.

Findings

Addressing rates are tens to hundreds of times faster than using an SLM alone.

Hybrid scanner configurations effectively reduce transition times between quantum gates.

The approach enables scalable and rapid control of large qubit arrays.

Abstract

We present a technique for rapid site-selective control of the quantum state of particles in a large array using a combination of a fast deflector (e.g. an acousto-optic deflector) and a relatively slow spatial light modulator. The use of spatial light modulators for site-selective quantum state manipulation has been limited due to slow transition times preventing rapid, consecutive quantum gates. By partitioning the spatial light modulator into multiple segments, and using a fast deflector to transition between them, it is possible to substantially reduce the average time increment between scanner transitions by increasing the number of gates that can be performed for a single spatial light modulator full frame setting. We analyze the performance of this device in two different configurations: in configuration 1, each segment of the spatial light modulator addresses the full qubit array; in configuration 2, each segment of the spatial light modulator addresses a sub-array and an additional fast deflector positions that sub-array with respect to the full qubit array. With these hybrid scanners we calculate qubit addressing rates that are tens to hundreds of times faster than using an SLM alone.