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Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots
We demonstrated coherent control of a quantum two-level system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout.Expand
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Hot carrier transport and photocurrent response in graphene.
Strong electron-electron interactions in graphene are expected to result in multiple-excitation generation by the absorption of a single photon. We show that the impact of carrier multiplication onExpand
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Exponential protection of zero modes in Majorana islands
Majorana zero modes are quasiparticle excitations in condensed matter systems that have been proposed as building blocks of fault-tolerant quantum computers. They are expected to exhibit non-AbelianExpand
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Relaxation, dephasing, and quantum control of electron spins in double quantum dots
Recent experiments have demonstrated quantum manipulation of two-electron spin states in double quantum dots using electrically controlled exchange interactions. Here we present a detailed theory forExpand
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Low-temperature fate of the 0.7 structure in a point contact: a Kondo-like correlated state in an open system.
Besides the usual conductance plateaus at multiples of 2e(2)/h, quantum point contacts typically show an extra plateau at approximately 0.7(2e(2)/h), believed to arise from electron-electronExpand
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Quantum Hall Effect in a Gate-Controlled p-n Junction of Graphene
The unique band structure of graphene allows reconfigurable electric-field control of carrier type and density, making graphene an ideal candidate for bipolar nanoelectronics. We report theExpand
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Majorana bound state in a coupled quantum-dot hybrid-nanowire system
Watching Majorana bound states form Majorana bound states (MBSs) are peculiar quasiparticles that may one day become the cornerstone of topological quantum computing. To engineer these states,Expand
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Triplet–singlet spin relaxation via nuclei in a double quantum dot
The spin of a confined electron, when oriented originally in some direction, will lose memory of that orientation after some time. Physical mechanisms leading to this relaxation of spin memoryExpand
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Manipulation of a single charge in a double quantum dot.
We manipulate a single electron in a fully tunable double quantum dot using microwave excitation. Under resonant conditions, microwaves drive transitions between the (1,0) and (0,1) charge states ofExpand
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Rapid single-shot measurement of a singlet-triplet qubit.
We report repeated single-shot measurements of the two-electron spin state in a GaAs double quantum dot. The readout allows measurement with a fidelity above 90% with a approximately 7 micros cycleExpand
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