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Controlled operatio...
Controlled operations in a strongly correlated two-electron quantum ring
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- Waltersson, Erik, 1979- (författare)
- Stockholms universitet,Fysikum,Atomic Physics
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- Lindroth, Eva, 1960- (författare)
- Stockholms universitet,Fysikum,Atomic Physics
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- Pilskog, Ingjald (författare)
- Department of Physics and Technology, University of Bergen, N-5020 Bergen, Norway,Atomic Physics
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visa fler...
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- Hansen, Jan Petter (författare)
- Department of Physics and Technology, University of Bergen, N-5020 Bergen, Norway
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visa färre...
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(creator_code:org_t)
- American Physical Society, 2009
- 2009
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 79:11, s. 115318-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have analyzed the electronic spectrum and wave-function characteristics of a strongly correlated two-electron quantum ring with model parameters close to those observed in experiments. The analysis is based on an exact diagonalization of the Hamiltonian in a large B-spline basis. We propose a qubit pair for storing quantum information, where one component is stored in the total electron spin and one multivalued “quMbit” is represented by the total angular momentum. In this scheme the controlled-NOT quantum gate is demonstrated with near 100% fidelity for a realistic far-infrared electromagnetic pulse.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Quantum Rings
- Quantum Dots
- Electron structure
- Electron correlation
- Configuration Interaction
- Quantum Computing
- quantum gates
- CNOT
- Controlled operations
- angular momentum
- electron spin
- quantum entanglement
- strongly correlated electron systems
- wave functions
- Atomic physics
- Atomfysik
- Computational physics
- Beräkningsfysik
- Electronic structure
- Elektronstruktur
- Semiconductor physics
- Halvledarfysik
- fysik
- Physics
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