Erik M Gauger et al 2008 New J. Phys. 10 073027 doi:10.1088/1367-2630/10/7/073027
Strategies for entangling remote spins with unequal coupling to an optically active mediator
Erik M Gauger1, Peter P Rohde1, A Marshall Stoneham2 and Brendon W Lovett1,3
Show affiliationsWe demonstrate that two remote qubits can be entangled through an optically active intermediary even if the coupling strengths between mediator and qubits are different. This is true for a broad class of interactions. We consider two contrasting scenarios. Firstly, we extend the analysis of a previously studied gate operation which relies on pulsed, dynamical control of the optical state and which may be performed quickly. We show that remote spins can be entangled in this case even when the intermediary coupling strengths are unequal. Secondly, we propose an alternative adiabatic control procedure, and find that the system requirements become even less restrictive in this case. The scheme could be tested immediately in a range of systems including molecules, quantum dots, or defects in crystals.
- PACS
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42.50.Dv Quantum state engineering and measurements
03.67.Lx Quantum computation architectures and implementations
03.67.Mn Entanglement measures, witnesses, and other characterizations
- Subjects
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Surfaces, interfaces and thin films
Optics, quantum optics and lasers
- Dates
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Issue 7 (July 2008)
Received 12 May 2008
Published 14 July 2008
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Strategies for entangling remote spins with unequal coupling to an optically active mediator
Erik M Gauger et al 2008 New J. Phys. 10 073027
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