From 7fd734fecab030b6f1a56e522e84cc776c163658 Mon Sep 17 00:00:00 2001
From: sjdilkes <silas.dilkes@cambridgequantum.com>
Date: Fri, 11 Aug 2023 14:18:33 +0100
Subject: [PATCH] Update CircPool.cpp

---
 tket/src/Circuit/CircPool.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tket/src/Circuit/CircPool.cpp b/tket/src/Circuit/CircPool.cpp
index f6b18d8b29..40e78584fb 100644
--- a/tket/src/Circuit/CircPool.cpp
+++ b/tket/src/Circuit/CircPool.cpp
@@ -839,11 +839,11 @@ Circuit YYPhase_using_TK2(const Expr &alpha) {
 
 Circuit YYPhase_using_CX(const Expr &alpha) {
   Circuit c(2);
-  c.add_op<unsigned>(OpType::U3, {0, -0.5, 0}, {0});
+  c.add_op<unsigned>(OpType::Sdg, {0});
   c.add_op<unsigned>(OpType::CX, {1, 0});
-  c.add_op<unsigned>(OpType::U3, {0, alpha, 0}, {1});
+  c.add_op<unsigned>(OpType::Ry, alpha, {1});
   c.add_op<unsigned>(OpType::CX, {1, 0});
-  c.add_op<unsigned>(OpType::U3, {0, 0.5, 0}, {0});
+  c.add_op<unsigned>(OpType::S, {0});
   return c;
 }