Paper Image

Decoherence simplifies simulation of quantum dynamics in a Kerr medium

Published on:

3 July 2023

Primary Category:

Quantum Physics

Paper Authors:

Tzula B. Propp,

Sayonee Ray,

John B. DeBrota,

Tameem Albash,

Ivan Deutsch

Bullets

Key Details

Studies a single bosonic mode with a Kerr nonlinearity, a common model in quantum optics

Shows decoherence washes out fine-grained quantum features like cat states

This causes the open system to regress to semiclassical physics

As a result, simulating the open system is more efficient with coarse-grained methods

Key result is decoherence suppresses errors from coarse-graining the Wigner function

AI generated summary

Decoherence simplifies simulation of quantum dynamics in a Kerr medium

This paper studies how coupling a quantum system to its environment can wash out fine-grained quantum features like coherence and entanglement. This increases the system's similarity to classical physics. The authors show this effect for a simple model system - a single bosonic mode with a Kerr nonlinearity. They find that as decoherence increases, the quantum system becomes easier to simulate classically using coarse-grained methods. The key result is that decoherence suppresses errors from discretization of the Wigner function on a coarse grid.

Answers from this paper

Comments

No comments yet, be the first to start the conversation...

Sign up to comment on this paper

Sign Up