RippleCarryAdderTTK operation
Warning
This documentation refers to the Classic QDK, which has been replaced by the Modern QDK.
Please see https://aka.ms/qdk.api for the API documentation for the Modern QDK.
Namespace: Microsoft.Quantum.Arithmetic
Package: Microsoft.Quantum.Standard
Reversible, in-place ripple-carry addition of two integers.
Given two $n$-bit integers encoded in LittleEndian registers xs
and ys
,
and a qubit carry, the operation computes the sum of the two integers
where the $n$ least significant bits of the result are held in ys
and
the carry out bit is xored to the qubit carry
.
operation RippleCarryAdderTTK (xs : Microsoft.Quantum.Arithmetic.LittleEndian, ys : Microsoft.Quantum.Arithmetic.LittleEndian, carry : Qubit) : Unit is Adj + Ctl
Input
xs : LittleEndian
LittleEndian qubit register encoding the first integer summand.
ys : LittleEndian
LittleEndian qubit register encoding the second integer summand, is modified to hold the $n$ least significant bits of the sum.
carry : Qubit
Carry qubit, is xored with the most significant bit of the sum.
Output : Unit
Remarks
This operation has the same functionality as RippleCarryAdderD and, RippleCarryAdderCDKM but does not use any ancilla qubits.
References
- Yasuhiro Takahashi, Seiichiro Tani, Noboru Kunihiro: "Quantum Addition Circuits and Unbounded Fan-Out", Quantum Information and Computation, Vol. 10, 2010. https://arxiv.org/abs/0910.2530
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