Initial import

vendor/spinoza/examples/expectation.rs

@@ -0,0 +1,30 @@
+use clap::Parser;
+use spinoza::core::qubit_expectation_value;
+use spinoza::{
+    config::{Config, QSArgs},
+    core::{xyz_expectation_value, State, CONFIG},
+    gates::{apply, Gate},
+};
+
+fn main() {
+    let args = QSArgs::parse();
+    let config = Config::from_cli(args);
+    CONFIG.set(config).unwrap();
+
+    let n = config.qubits.into();
+    let mut state = State::new(n);
+    let target = 0;
+
+    apply(Gate::RX(0.54), &mut state, target);
+    apply(Gate::RY(0.12), &mut state, target);
+
+    let targets = (0..n).collect::<Vec<usize>>();
+    let exp_vals = xyz_expectation_value('z', &state, &targets);
+    println!("expectation values: {:?}", exp_vals);
+
+    let exp_vals: Vec<_> = (0..n).map(|t| qubit_expectation_value(&state, t)).collect();
+    println!(
+        "expectation values using `qubit_expectation_value`: {:?}",
+        exp_vals
+    );
+}