Quantum Modular Adder over GF(2n − 1) without Saving the Final Carry
- Title
- Quantum Modular Adder over GF(2n − 1) without Saving the Final Carry
- Author
- 서승현
- Keywords
- quantum modular adder; quantum ripple carry adder; Galois Field (2 n − 1); quantum circuit; quantum algorithm
- Issue Date
- 2021-03
- Publisher
- MDPI
- Citation
- APPLIED SCIENCES-BASEL, v. 11, Issue. 7, Article no. 2949, 11pp
- Abstract
- Addition is the most basic operation of computing based on a bit system. There are various
addition algorithms considering multiple number systems and hardware, and studies for a more
efficient addition are still ongoing. Quantum computing based on qubits as the information unit asks
for the design of a new addition because it is, physically, wholly different from the existing frequencybased computing in which the minimum information unit is a bit. In this paper, we propose an efficient quantum circuit of modular addition, which reduces the number of gates and the depth.
The proposed modular addition is for the Galois Field GF(n − 1), which is important as a finite
field basis in various domains, such as cryptography. Its design principle was from the ripple
carry addition (RCA) algorithm, which is the most widely used in existing computers. However,
unlike conventional RCA, the storage of the final carry is not needed due to modifying existing
diminished-1 modulo 2n − 1 adders. Our proposed adder can produce modulo sum within the
range {0, 2n − 2} by fewer qubits and less depth. For comparison, we analyzed the proposed
quantum addition circuit over GF(2n − 1) and the previous quantum modular addition circuit for
the performance of the number of qubits, the number of gates, and the depth, and simulated it with
IBM’s simulator ProjectQ.
- URI
- https://www.proquest.com/docview/2524471834?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/166884
- ISSN
- 2076-3417
- DOI
- 10.3390/app11072949
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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