Analyzing the Toffoli gate in disordered circuit QED

Quantum-control approach to realizing a Toffoli gate in circuit QED

We study the realization of a Toffoli gate with superconducting qubits in a circuit-QED setup using quantum-control methods. Starting with optimized piecewise-constant control fields acting on all qubits and typical strengths of XY -type coupling between the qubits, we demonstrate that the optimal gate fidelities are affected only slightly by a “low-pass” filtering of these fields with the typi...

Single spin Toffoli-Fredkin logic gate

Reversible Data Hiding Scheme Using Toffoli Gate

In this paper, we propose a new reversible data hiding scheme without distortion of stego image. In the proposed scheme, Toffoli gate is used in embedding and extraction procedures. This gate provides a distortionless of stego image because it has a characteristic of self-inverse. In the experimental results, the embedding capacity and PSNR of the proposed technique are greater than the previou...

Testable Sequential Circuits using Conservative Toffoli Gate

Testing of Sequential circuits can be done by two test vectors (all 1’s and all 0’s) if the circuits were based on the conservative logic. The circuit is made to be tested by designing the circuit with the help of Reversible logic gates. Toffoli gate is used as reversible gate in this paper. Sequential circuits such as latches, flip flops are designed with the help of conservative logic reversi...

The Toffoli-Hadamard Gate System: an Algebraic Approach

Shi and Aharonov have shown that the Toffoli gate and the Hadamard gate give rise to an approximately universal set of quantum computational gates. The basic algebraic properties of this system have been studied in Dalla Chiara et al. (Foundations of Physics 39(6):559–572, 2009), where we have introduced the notion of Shi-Aharonov quantum computational structure. In this paper we propose an alg...