One- and two-qubit quantum gates using superimposed optical-lattice potentials

Quantum Computing with Global One-and Two-Qubit Gates

We present generalized and improved constructions for simulating quantum computers with a polynomial slowdown on lattices composed of qubits on which certain global versions of oneand two-qubit operations can be performed.

Improving the purity of one- and two-qubit gates

The experimental realization of one-qubit gates in solid state setups [1–3] and two-qubit gates in ion traps [4, 5] and Josephson junctions [6] has demonstrated that these systems provide remarkable coherence properties although the goal of 10−5 errors per gate operation [7] has not yet been accomplished experimentally. The unavoidable coupling to external degrees of freedomand the thereby caus...

Quantum circuits with uniformly controlled one-qubit gates

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Two-qubit quantum gates construction via unitary factorization

Quantum information and quantum computation are emerging research areas based on the properties of quantum resources, such as superposition and entanglement. In the quantum gate array version, the use of convenient and proper gates is essential. While these gates adopt theoretically convenient forms to reproduce computational algorithms, their design and feasibility depend on specific quantum s...

Two-qubit gates in a microwave photonic quantum computer