Deterministic generation of an on-demand Fock state

TL;DR

This paper proposes a theoretical protocol for on-demand generation of photon Fock states using a Jaynes Cummings quantum walk, and demonstrates its potential implementation in solid-state systems with NV centers and optical cavities.

Contribution

It introduces a new protocol for deterministic Fock state generation and details its practical implementation in solid-state quantum systems.

Findings

Protocol enables high-photon-number Fock states on demand.

Implementation feasible with NV centers and optical cavities.

System can be integrated on a chip with precise control.

Abstract

We theoretically study the deterministic generation of photon Fock states on-demand using a protocol based on a Jaynes Cummings quantum random walk which includes damping. We then show how each of the steps of this protocol can be implemented in a low temperature solid-state quantum system with a Nitrogen-Vacancy centre in a nano-diamond coupled to a nearby high-Q optical cavity. By controlling the coupling duration between the NV and the cavity via the application of a time dependent Stark shift, and by increasing the decay rate of the NV via stimulated emission depletion (STED) a Fock state with high photon number can be generated on-demand. Our setup can be integrated on a chip and can be accurately controlled.