Commit bab8185b authored by Nguyen, Thien Minh's avatar Nguyen, Thien Minh
Browse files

added qasm3 adder example


Signed-off-by: Nguyen, Thien Minh's avatarThien Nguyen <nguyentm@ornl.gov>
parent 2c1660f4
/*
* quantum ripple-carry adder
* Cuccaro et al, quant-ph/0410184
*/
OPENQASM 3;
gate ccx a,b,c
{
h c;
cx b,c; tdg c;
cx a,c; t c;
cx b,c; tdg c;
cx a,c; t b; t c; h c;
cx a,b; t a; tdg b;
cx a,b;
}
gate majority a, b, c {
cx c, b;
cx c, a;
ccx a, b, c;
}
gate unmaj a, b, c {
ccx a, b, c;
cx c, a;
cx a, b;
}
qubit cin;
qubit a[4];
qubit b[4];
qubit cout;
bit ans[5];
// FIXME: left shift casting to handle different type:
// e.g. i4 vs. i64 (shift value)
uint[64] a_in = 1;
uint[64] b_in = 14;
for i in [0:4] {
// FIXME: not able to do this inline....
bool b1 = bool(a_in[i]);
bool b2 = bool(b_in[i]);
if (b1) {
x a[i];
}
if (b2) {
x b[i];
}
}
// add a to b, storing result in b
majority cin, b[0], a[0];
for i in [0: 3] {
majority a[i], b[i + 1], a[i + 1];
}
cx a[3], cout;
for i in [2: -1: -1] {
unmaj a[i], b[i+1], a[i+1];
}
unmaj cin, b[0], a[0];
measure b[0:3] -> ans[0:3];
measure cout[0] -> ans[4];
\ No newline at end of file
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