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index 96a6896..ba2da8e 100644
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@@ -4,6 +4,10 @@
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@@ -136,10 +140,6 @@
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diff --git a/enter/.obsidian/workspace.json b/enter/.obsidian/workspace.json
index 73d24db..c805060 100644
--- a/enter/.obsidian/workspace.json
+++ b/enter/.obsidian/workspace.json
@@ -198,6 +198,8 @@
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     "Coding Tips (Classical)/Project Vault/Comms/RADIO/Software/Software Repositories.md",
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diff --git a/enter/Machine Tips (Quantum)/Physics/Optics.md b/enter/Machine Tips (Quantum)/Physics/Optics.md
index e69de29..87cc6c9 100644
--- a/enter/Machine Tips (Quantum)/Physics/Optics.md	
+++ b/enter/Machine Tips (Quantum)/Physics/Optics.md	
@@ -0,0 +1,6 @@
+# Optics 
+
+Photons are a significant aspect of quantum computing. For instance with quantum dots. 
+
+**Quantum** dots can convert terahertz photons into visible light. This mechanism is used to develop a semiconductor-based room-temperature terahertz camera that can simultaneously record the field strength and polarization states of a terahertz beam. The proposed detector has fast speeds and can be manufactured at the wafer-scale. 
+--*Using quantum dots to produce a CMOS terahertz camera and polarimeter* (2022), [source](https://www.nature.com/articles/s41565-022-01251-9)
\ No newline at end of file