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Accession Number ADA570938
Title Quantum Control of a Spin Qubit Coupled to a Photonic Crystal Cavity.
Publication Date Dec 2012
Media Count 26p
Personal Author C. S. Kim D. Solenov M. Kim S. G. Carter T. M. Sweeney
Abstract A key ingredient for a quantum network is an interface between stationary quantum bits and photons, which act as flying qubits for interactions and communication. Photonic crystal architectures are promising platforms for enhancing the coupling of light to solid state qubits. Quantum dots can be integrated into a photonic crystal, with optical transitions coupling to photons and spin states forming a long-lived quantum memory. Many researchers have now succeeded in coupling these emitters to photonic crystal cavities, but there have been no demonstrations of a functional spin qubit and quantum gates in this environment. Here we have developed a coupled cavity- quantum dot system in which the dot is controllably charged with a single electron. We perform the initialization, rotation and measurement of a single electron spin qubit using laser pulses and find that the cavity can significantly improve these processes.
Keywords Optical properties
Photonic crystals
Photons
Quantum dots
Qubits
Spin states
Transitions


 
Source Agency Non Paid ADAS
NTIS Subject Category 46C - Optics & Lasers
Corporate Author Naval Research Lab., Washington, DC.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1315
Contract Number N/A

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