WYV53
Design of Dedicated Reversible Quantum Circuitry for Square
Computation
Jayashree,H.V
VLSI Design and 2014 13th International Conference on Embedded Systems, 2014 27th
International Conference on
DOI: 10.1109/VLSID.2014.102
Publication Year: 2014 Page(s):551 - 556
Project Title
: Design of Dedicated Reversible Quantum Circuitry for Square
Computation
Domain
: VLSI
Reference
: IEEE
Publish Year
: 5-9 Jan. 2014 Page(s):551 - 556
D.O.I
: 10.1109/VLSID.2014.102
Software Tool
: XILINX
Language
Developed By
: Verilog HDL
: Wine Yard Technologies, Hyderabad
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WYV53
Design of Dedicated Reversible Quantum Circuitry for Square
Computation
Abstract:
Quantum computation is
modeled
are reversible so
quantum circuits
the
by quantum circuits.
can
be
All
built
the quantum operations
using reversible logic
gates. Reversible computing is the emerging technology, its major role is in the field
of quantum computing, optical computing, and design of low power nano circuits. The most
frequently used computational unit for digital signal processing and multimedia applications
is multiplier. To compute square of an operand, regular multipliers are used in general. This
paper proposes a dedicated quantum circuit for computing square of an operand efficiently
compared to the existing multipliers in the literature. The squaring unit is mathematically
modeled and its metrics quantum cost, garbage outputs and ancilla input, gate count are
calculated. We compared the proposed design with the existing multipliers to
compute square and found that proposed square unit is efficient in terms of quantum cost,
garbage outputs, ancilla inputs and gate count. The proposed reversible square circuit has
63% to 85% improvement of quantum cost, garbage outputs, ancilla inputs and gate count
over existing reversible multiplier circuits.
.Existing method:
To compute square of an operand, regular multipliers are used in general. Which are
designed by using conventional gates like AND, NOT, XOR etc. using
the Boolean
expressions.
Proposed method:
The development in the field of nanometer technology leads to minimize the power
consumption of logic circuits. Reversible logic design has been one of the promising
technologies gaining greater interest due to less dissipation of heat and low power
consumption. In the digital design, the decoder is a widely used process. So, the reversible
logic gates and reversible circuits for realizing compute square like of 2 bit,4 bit…etc.
operands using reversible logic gates is proposed. The proposed design leads to the reduction
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WYV53
of power consumption compared with conventional logic circuits.
Applications:
1. Digital systems designing
2. Digital signal processing
3. Communication
4. Computer graphics
5. Cryptography applications
Advantages:
1. Area Efficient circuits.
2. Low power Circuits.
3. High speed square computation circuit.
Conclusion:
we have presented efficient dedicated quantum circuit for square computation, primarily
optimizing the quantum cost, gate count, garbage outputs and ancilla inputs. The proposed
reversible 4x4 square design is proved to be better than the existing designs in terms of the
quantum cost, gate count, garbage outputs, and ancilla inputs. In the reduced partial
product generation circuitry, maximum of 63% improvement is achieved for ancilla inputs
and gate count; there are zero garbage outputs in the proposed circuit and 73%
improvement on quantum cost. In addition to this, final product generation circuitry has
maximum of 85% improvement over garbage outputs and gate count, 83% improvement on
quantum cost and ancilla inputs. The square unit will find applications in reversible
computing of multipliers and specially dividers like Newton Raphson divider.
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Circuit Diagrams:
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Screen shots:
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