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An S followed by an Sdg on the same qubit is the identity.",[287,1172,1174],{"id":1173},"usage","Usage",[1176,1177,1182],"pre",{"className":1178,"code":1179,"language":1180,"meta":1181,"style":1181},"language-python shiki shiki-themes one-dark-pro","from qiskit import QuantumCircuit\n\nqc = QuantumCircuit(1, 1)\nqc.s(0)\nqc.sdg(0)\nqc.measure(0, 0)\n","python","",[318,1183,1184,1202,1209,1235,1250,1264],{"__ignoreMap":1181},[15,1185,1188,1192,1196,1199],{"class":1186,"line":1187},"line",1,[15,1189,1191],{"class":1190},"seHd6","from",[15,1193,1195],{"class":1194},"sn6KH"," qiskit ",[15,1197,1198],{"class":1190},"import",[15,1200,1201],{"class":1194}," QuantumCircuit\n",[15,1203,1205],{"class":1186,"line":1204},2,[15,1206,1208],{"emptyLinePlaceholder":1207},true,"\n",[15,1210,1212,1215,1218,1222,1224,1227,1230,1232],{"class":1186,"line":1211},3,[15,1213,1214],{"class":1194},"qc ",[15,1216,370],{"class":1217},"sjrmR",[15,1219,1221],{"class":1220},"sVbv2"," QuantumCircuit",[15,1223,375],{"class":1194},[15,1225,133],{"class":1226},"sVC51",[15,1228,1229],{"class":1194},", ",[15,1231,133],{"class":1226},[15,1233,1234],{"class":1194},")\n",[15,1236,1238,1241,1244,1246,1248],{"class":1186,"line":1237},4,[15,1239,1240],{"class":1194},"qc.",[15,1242,1243],{"class":1220},"s",[15,1245,375],{"class":1194},[15,1247,214],{"class":1226},[15,1249,1234],{"class":1194},[15,1251,1253,1255,1258,1260,1262],{"class":1186,"line":1252},5,[15,1254,1240],{"class":1194},[15,1256,1257],{"class":1220},"sdg",[15,1259,375],{"class":1194},[15,1261,214],{"class":1226},[15,1263,1234],{"class":1194},[15,1265,1267,1269,1272,1274,1276,1278,1280],{"class":1186,"line":1266},6,[15,1268,1240],{"class":1194},[15,1270,1271],{"class":1220},"measure",[15,1273,375],{"class":1194},[15,1275,214],{"class":1226},[15,1277,1229],{"class":1194},[15,1279,214],{"class":1226},[15,1281,1234],{"class":1194},[1176,1283,1287],{"className":1284,"code":1285,"language":1286,"meta":1181,"style":1181},"language-js shiki shiki-themes one-dark-pro","import { QuantumCircuit } from 'qiskit';\n\nconst circuit = QuantumCircuit(1, 1);\ncircuit.s(0);\ncircuit.sdg(0);\ncircuit.measure(0, 0);\n","js",[318,1288,1289,1312,1316,1341,1356,1370],{"__ignoreMap":1181},[15,1290,1291,1293,1296,1300,1303,1305,1309],{"class":1186,"line":1187},[15,1292,1198],{"class":1190},[15,1294,1295],{"class":1194}," { ",[15,1297,1299],{"class":1298},"sVyAn","QuantumCircuit",[15,1301,1302],{"class":1194}," } ",[15,1304,1191],{"class":1190},[15,1306,1308],{"class":1307},"subq3"," 'qiskit'",[15,1310,1311],{"class":1194},";\n",[15,1313,1314],{"class":1186,"line":1204},[15,1315,1208],{"emptyLinePlaceholder":1207},[15,1317,1318,1321,1325,1328,1330,1332,1334,1336,1338],{"class":1186,"line":1211},[15,1319,1320],{"class":1190},"const",[15,1322,1324],{"class":1323},"sU0A5"," circuit",[15,1326,1327],{"class":1217}," =",[15,1329,1221],{"class":1220},[15,1331,375],{"class":1194},[15,1333,133],{"class":1226},[15,1335,1229],{"class":1194},[15,1337,133],{"class":1226},[15,1339,1340],{"class":1194},");\n",[15,1342,1343,1346,1348,1350,1352,1354],{"class":1186,"line":1237},[15,1344,1345],{"class":1323},"circuit",[15,1347,629],{"class":1194},[15,1349,1243],{"class":1220},[15,1351,375],{"class":1194},[15,1353,214],{"class":1226},[15,1355,1340],{"class":1194},[15,1357,1358,1360,1362,1364,1366,1368],{"class":1186,"line":1252},[15,1359,1345],{"class":1323},[15,1361,629],{"class":1194},[15,1363,1257],{"class":1220},[15,1365,375],{"class":1194},[15,1367,214],{"class":1226},[15,1369,1340],{"class":1194},[15,1371,1372,1374,1376,1378,1380,1382,1384,1386],{"class":1186,"line":1266},[15,1373,1345],{"class":1323},[15,1375,629],{"class":1194},[15,1377,1271],{"class":1220},[15,1379,375],{"class":1194},[15,1381,214],{"class":1226},[15,1383,1229],{"class":1194},[15,1385,214],{"class":1226},[15,1387,1340],{"class":1194},[11,1389,1390,1391,1393],{},"Every shot reads ",[318,1392,214],{},": the pair cancels.",[287,1395,1397],{"id":1396},"on-ionq-hardware","On IonQ hardware",[11,1399,1400,1401,629],{},"Sdg is a virtual Z. The compiler folds the quarter-turn into the phase of the next pulse, so it costs no gate and no time on the machine. See ",[109,1402,1404],{"href":1403},"\u002Flearn\u002Fdocs\u002Fhow-your-circuit-is-compiled","How your circuit is compiled",[287,1406,1408],{"id":1407},"related","Related",[1410,1411,1412,1417,1423,1427],"ul",{},[1413,1414,1415],"li",{},[109,1416,112],{"href":111},[1413,1418,1419],{},[109,1420,1422],{"href":1421},"\u002Flearn\u002Fdocs\u002Ftdg-gate","Tdg gate",[1413,1424,1425],{},[109,1426,628],{"href":627},[1413,1428,1429],{},[109,1430,1432],{"href":1431},"\u002Flearn\u002Fdocs\u002Fgates","Gate reference",[1434,1435,1436],"style",{},"html pre.shiki code .seHd6, html code.shiki .seHd6{--shiki-default:#C678DD}html pre.shiki code .sn6KH, html code.shiki .sn6KH{--shiki-default:#ABB2BF}html pre.shiki code .sjrmR, html code.shiki .sjrmR{--shiki-default:#56B6C2}html pre.shiki code .sVbv2, html code.shiki .sVbv2{--shiki-default:#61AFEF}html pre.shiki code .sVC51, html code.shiki .sVC51{--shiki-default:#D19A66}html .default .shiki span {color: var(--shiki-default);background: 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