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WORLD SCIENTIFIC eBooks

Applications with Single Qubits

Published Nov 1, 2024• 0 citations
Publisher
DOI
10.1142/9789811253201_0006

Related papers

Targeting Single Qubits

Anonymous

Physics•Mar 12, 2015•0 citations

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In this paper we investigate the implementation of single-qubit operations in the Kane solid-state quantum computer by Rabi flipping the nuclear qubits via the application of resonant radio-frequency fields. Specifically, we calculate the change in the resonance frequency of the nuclear qubits with the application of electric potentials to metallic control gates designed to address individual qubits, as well as the effects these fields have on neighbouring qubits. We find that although the resonance frequencies of the neighbouring qubits are shifted, it is still theoretically possible to implement single-qubit operations with the fidelity required for large-scale quantum computation using this technique.

Nanotechnology•Aug 30, 2002•18 citations

Temporal magnon-qubit Mach-Zehnder interferometer

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A temporal magnon-qubit Mach-Zehnder (MZ) interferometer is proposed. The interferometer is based on controllable entanglement of a microwave qubit and a magnonic state, achieved by application of a pulsed magnetic field playing the role of a magnon-qubit temporal "beam splitter". Analogous to a typical MZ interferometer, the generated interference pattern of the final qubit population carries information about the magnon dynamics. One important application of the proposed scheme is the study of single magnon decoherence. Interestingly, this scheme allows one to independently determine rates of two possible decoherence channels. This may help enable single magnon state applications and answer fundamental questions of quasi-particle decoherence at single quantum levels.

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Quantum State Sharing of an Arbitrary Single State by Using a Genuinely Entangled Five-Qubit State

Ming-huang Sang

A new application of the genuinely entangled five-qubit state introduced recently by Brownis investi-gated for quantum state sharing(QSTS) of an arbitrary single qubit state.For QSTS,the sender needs to perform four-qubit joint von-Neumann measurement on her qubits,and the controller needs to perform a single-qubit measurement on his qubit,then the receiver can reconstruct the arbitrary single qubit state by performing some appropriately unitary transformations on his qubits after he knows the measured results of both the sender and the controller.The successful probability of the protocol is 100%.

Journal of Jiangxi Normal University•Jan 1, 2011•0 citations
In this paper we investigate the implementation of single-qubit operations in the Kane solid-state quantum computer by Rabi flipping the nuclear qubits via the application of resonant radio-frequency fields. Specifically, we calculate the change in the resonance frequency of the nuclear qubits with the application of electric potentials to metallic control gates designed to address individual qubits, as well as the effects these fields have on neighbouring qubits. We find that although the resonance frequencies of the neighbouring qubits are shifted, it is still theoretically possible to implement single-qubit operations with the fidelity required for large-scale quantum computation using this technique.
A temporal magnon-qubit Mach-Zehnder (MZ) interferometer is proposed. The interferometer is based on controllable entanglement of a microwave qubit and a magnonic state, achieved by application of a pulsed magnetic field playing the role of a magnon-qubit temporal "beam splitter". Analogous to a typical MZ interferometer, the generated interference pattern of the final qubit population carries information about the magnon dynamics. One important application of the proposed scheme is the study of single magnon decoherence. Interestingly, this scheme allows one to independently determine rates of two possible decoherence channels. This may help enable single magnon state applications and answer fundamental questions of quasi-particle decoherence at single quantum levels.
A new application of the genuinely entangled five-qubit state introduced recently by Brownis investi-gated for quantum state sharing(QSTS) of an arbitrary single qubit state.For QSTS,the sender needs to perform four-qubit joint von-Neumann measurement on her qubits,and the controller needs to perform a single-qubit measurement on his qubit,then the receiver can reconstruct the arbitrary single qubit state by performing some appropriately unitary transformations on his qubits after he knows the measured results of both the sender and the controller.The successful probability of the protocol is 100%.