From bdb723c7a51ac44d9943fa097d801e62cc25f813 Mon Sep 17 00:00:00 2001
From: WrathfulSpatula <stranoj@gmail.com>
Date: Sat, 5 Oct 2024 10:56:12 -0400
Subject: [PATCH] Noise parameter and new Qrack

---
 Makefile                               |  2 +-
 pennylane_qrack/QrackDeviceConfig.toml |  4 ++--
 pennylane_qrack/_version.py            |  2 +-
 pennylane_qrack/qrack_device.cpp       |  9 +++++++--
 pennylane_qrack/qrack_device.py        | 10 +++++-----
 5 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile
index c83ce78..336ff4d 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ help:
 build-deps:
 ifneq ($(OS),Windows_NT)
 ifeq ($(QRACK_PRESENT),)
-	git clone https://github.com/unitaryfund/qrack.git; cd qrack; git checkout 4e42ae5d0780ad70e86669f01bf0b134f2c8da06; cd ..
+	git clone https://github.com/unitaryfund/qrack.git; cd qrack; git checkout 61a9f1e4694eab612b5032e884e6f1696842e47d; cd ..
 endif
 	mkdir -p qrack/build
 ifeq ($(UNAME_S),Linux)
diff --git a/pennylane_qrack/QrackDeviceConfig.toml b/pennylane_qrack/QrackDeviceConfig.toml
index 6206958..507dedd 100644
--- a/pennylane_qrack/QrackDeviceConfig.toml
+++ b/pennylane_qrack/QrackDeviceConfig.toml
@@ -142,8 +142,8 @@ is_qbdd = "isBinaryDecisionTree"
 is_gpu = "isOpenCL"
 # Allocate GPU buffer from general host heap? (Default is "false"; "true" might improve performance or reliability in certain cases, like if using an Intel HD as accelerator)
 is_host_pointer = "isHostPointer"
-# Use noisy simulation? (Default is "false"; depolarizing noise intensity can be controlled by "QRACK_GATE_DEPOLARIZATION" environment variable)
-is_noisy = "isNoisy"
+# Noise parameter. (Default is "0"; depolarizing noise intensity can also be controlled by "QRACK_GATE_DEPOLARIZATION" environment variable)
+noise = "noise"
 
 # In the above example, a dictionary will be constructed at run time.
 # The dictionary will contain the string key "option_key" and its value
diff --git a/pennylane_qrack/_version.py b/pennylane_qrack/_version.py
index a7aca54..e4bf150 100644
--- a/pennylane_qrack/_version.py
+++ b/pennylane_qrack/_version.py
@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.9.8"
+__version__ = "0.10.0"
diff --git a/pennylane_qrack/qrack_device.cpp b/pennylane_qrack/qrack_device.cpp
index bbc79ed..8ac9928 100644
--- a/pennylane_qrack/qrack_device.cpp
+++ b/pennylane_qrack/qrack_device.cpp
@@ -406,9 +406,10 @@ struct QrackDevice final : public Catalyst::Runtime::QuantumDevice {
         keyMap["'is_qbdd'"] = 5;
         keyMap["'is_gpu'"] = 6;
         keyMap["'is_host_pointer'"] =7;
-        keyMap["'is_noisy'"] = 8;
+        keyMap["'noise'"] = 8;
 
         size_t pos;
+        real1_f noiseParam = 0;
         while ((pos = kwargs.find(":")) != std::string::npos) {
             std::string key = trim(kwargs.substr(0, pos));
             kwargs.erase(0, pos + 1U);
@@ -439,7 +440,8 @@ struct QrackDevice final : public Catalyst::Runtime::QuantumDevice {
                     hp = val;
                     break;
                 case 8:
-                    nw = val;
+                    noiseParam = std::stof(value)
+                    nw = noiseParam > ZERO_R1;
                     break;
                 default:
                     break;
@@ -447,6 +449,9 @@ struct QrackDevice final : public Catalyst::Runtime::QuantumDevice {
         }
 
         qsim = QSIM_CONFIG(0U);
+        if (noiseParam > ZERO_R1) {
+            qsim->SetNoiseParameter(noiseParam);
+        }
     }
 
     QrackDevice &operator=(const QuantumDevice &) = delete;
diff --git a/pennylane_qrack/qrack_device.py b/pennylane_qrack/qrack_device.py
index fb2718d..c452499 100644
--- a/pennylane_qrack/qrack_device.py
+++ b/pennylane_qrack/qrack_device.py
@@ -158,8 +158,8 @@ class QrackDevice(QubitDevice):
     isOpenCL = True
     # Allocate GPU buffer from general host heap? (Default is "false"; "true" might improve performance or reliability in certain cases, like if using an Intel HD as accelerator)
     isHostPointer = False
-    # Use noisy simulation? (Default is "false"; depolarizing noise intensity can be controlled by "QRACK_GATE_DEPOLARIZATION" environment variable)
-    isNoisy = False
+    # Noise parameter. (Default is "0"; depolarizing noise intensity can also be controlled by "QRACK_GATE_DEPOLARIZATION" environment variable)
+    noise = 0
 
     @staticmethod
     def get_c_interface():
@@ -187,8 +187,8 @@ def __init__(self, wires=0, shots=None, **kwargs):
             self.isOpenCL = options['isOpenCL']
         if 'isHostPointer' in options:
             self.isHostPointer = options['isHostPointer']
-        if 'isNoisy' in options:
-            self.isNoisy = options['isNoisy']
+        if 'noise' in options:
+            self.noise = options['noise']
         super().__init__(wires=wires, shots=shots)
         self._state = QrackSimulator(
             self.num_wires,
@@ -198,7 +198,7 @@ def __init__(self, wires=0, shots=None, **kwargs):
             isBinaryDecisionTree=self.isBinaryDecisionTree,
             isOpenCL=self.isOpenCL,
             isHostPointer=self.isHostPointer,
-            isNoisy=self.isNoisy
+            noise = self.noise
         )
 
     def _reverse_state(self):