Results 71 to 80 of about 2,092,913 (379)

A SWAP gate for qudits

open access: yes, 2013
We present a quantum SWAP gate valid for quantum systems of an arbitrary dimension. The gate generalizes the CNOT implementation of the SWAP gate for qubits and keeps its most important properties, like symmetry and simplicity.
Chamorro-Posada, Pedro   +1 more
core   +1 more source

Quantum gates on hybrid qudits [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2003
We introduce quantum hybrid gates that act on qudits of different dimensions. In particular, we develop two representative two-qudit hybrid gates (SUM and SWAP) and many-qudit hybrid Toffoli and Fredkin gates. We apply the hybrid SUM gate to generating entanglement, and find that operator entanglement of the SUM gate is equal to the entanglement ...
Jamil Daboul   +3 more
openaire   +3 more sources

A New Quantum Private Protocol for Set Intersection Cardinality Based on a Quantum Homomorphic Encryption Scheme for Toffoli Gate

open access: yesEntropy, 2023
Set Intersection Cardinality (SI-CA) computes the intersection cardinality of two parties’ sets, which has many important and practical applications such as data mining and data analysis.
Wen Liu   +3 more
doaj   +1 more source

Controllable conditional quantum oscillations and synchronization in superconducting flux qubits

open access: yes, 2010
Conditional quantum oscillations are investigated for quantum gate operations in superconducting flux qubits. We present an effective Hamiltonian which describes a conditional quantum oscillation in two-qubit systems.
Chen, Ai Min, Cho, Sam Young
core   +1 more source

Quantum gate learning in qubit networks: Toffoli gate without time-dependent control [PDF]

open access: yesnpj Quantum Information, 2015
We put forward a strategy to encode a quantum operation into the unmodulated dynamics of a quantum network without the need for external control pulses, measurements or active feedback.
L. Banchi, Nicola Pancotti, S. Bose
semanticscholar   +1 more source

Demystifying Quantum Gate Fidelity for Electronics Engineers

open access: yesApplied Sciences
The implementation of quantum gates by means of microwave cryo-RFICs controlling qubits is a promising path toward scalable quantum processors. Quantum gate fidelity quantifies how well an actual quantum gate produces a quantum state close to the desired
Mattia Borgarino, Alessandro Badiali
doaj   +1 more source

On the stability of quantum holonomic gates

open access: yesNew Journal of Physics, 2012
7 ...
Maura Sassetti   +6 more
openaire   +5 more sources

Efficient Quantum Computation with Probabilistic Quantum Gates [PDF]

open access: yesPhysical Review Letters, 2005
With a combination of the quantum repeater and the cluster state approaches, we show that efficient quantum computation can be constructed even if all the entangling quantum gates only succeed with an arbitrarily small probability $p$. The required computational overhead scales efficiently both with $1/p$ and $n$, where $n$ is the number of qubits in ...
Duan, L.-M., Kimble, H. J.
openaire   +6 more sources

Experimental implementation of encoded logical qubit operations in a perfect quantum error correcting code

open access: yes, 2012
Large-scale universal quantum computing requires the implementation of quantum error correction (QEC). While the implementation of QEC has already been demonstrated for quantum memories, reliable quantum computing requires also the application of ...
D. Gottesman   +6 more
core   +1 more source

Two-Qubit Pulse Gate for the Three-Electron Double Quantum Dot Qubit [PDF]

open access: yes, 2015
The three-electron configuration of gate-defined double quantum dots encodes a promising qubit for quantum information processing. I propose a two-qubit entangling gate using a pulse-gated manipulation procedure.
Mehl, Sebastian
core   +2 more sources

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