From 8bef6a2878ef2663bae8c4b9863e99b8df0e90c1 Mon Sep 17 00:00:00 2001 From: Charles Moussa Date: Wed, 8 Jan 2025 12:15:38 +0100 Subject: [PATCH] Update docs/noise.md Co-authored-by: RolandMacDoland <9250798+RolandMacDoland@users.noreply.github.com> --- docs/noise.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/noise.md b/docs/noise.md index e79f08c..23b3af6 100644 --- a/docs/noise.md +++ b/docs/noise.md @@ -1,6 +1,6 @@ ## Digital Noise -In the description of closed quantum systems, a pure state vector is used to represent the complete quantum state. Thus, pure quantum states are represented by state vectors $|\psi \rangle $. +In the description of closed quantum systems, the complete quantum state is a pure quantum state represented by a state vector $|\psi \rangle $. However, this description is not sufficient to study open quantum systems. When the system interacts with its environment, quantum systems can be in a mixed state, where quantum information is no longer entirely contained in a single state vector but is distributed probabilistically.