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Autor:
Banks, Hunter B., Soykal, Oney O., Myers-Ward, Rachael, Gaskill, D. Kurt, Reinecke, T. L., Carter, Samuel G.
Publikováno v:
Phys. Rev. Applied 11, 024013 (2019)
The silicon monovacancy in 4H-SiC is a promising candidate for solid-state quantum information processing. We perform high-resolution optical spectroscopy on single V2 defects at cryogenic temperatures. We find favorable low temperature optical prope
Externí odkaz:
http://arxiv.org/abs/1811.01293
Autor:
Soykal, Ö. O., Reinecke, T. L.
Publikováno v:
Phys. Rev. B 95, 081405 (2017)
We show that implementations for quantum sensing with exceptional sensitivity and spatial resolution can be made using spin-3/2 semiconductor defect states. We illustrate this using the silicon monovacancy deep center in hexagonal SiC based on our ri
Externí odkaz:
http://arxiv.org/abs/1605.07628
Publikováno v:
Phys. Rev. B 87, 035308 (2013)
Implementations for quantum computing require fast single- and multi-qubit quantum gate operations. In the case of optically controlled quantum dot qubits theoretical designs for long-range two- or multi-qubit operations satisfying all the requiremen
Externí odkaz:
http://arxiv.org/abs/1204.5206
Autor:
Spatzek, S., Greilich, A., Economou, Sophia E., Schwan, A., Varwig, S., Yakovlev, D. R., Reuter, D., Wieck, A. D., Reinecke, T. L., Bayer, M.
Publikováno v:
Phys. Rev. Lett. 107, 137402 (2011)
Coherent interactions between spins in quantum dots are a key requirement for quantum gates. We have performed pump-probe experiments in which pulsed lasers emitting at different photon energies manipulate two distinct subsets of electron spins withi
Externí odkaz:
http://arxiv.org/abs/1010.2523
Autor:
Greilich, A., Economou, Sophia E., Spatzek, S., Yakovlev, D. R., Reuter, D., Wieck, A. D., Reinecke, T. L., Bayer, M.
Publikováno v:
Nat. Phys. 5, 262 (2009)
Coherent manipulation of quantum bits (qubits) on time scales much shorter than the coherence time is a key prerequisite for quantum information processing. Electron spins in quantum dots (QDs) are particularly attractive for implementations of qubit
Externí odkaz:
http://arxiv.org/abs/0910.3940
Autor:
Carter, S. G., Shabaev, A., Economou, Sophia E., Kennedy, T. A., Bracker, A. S., Reinecke, T. L.
Publikováno v:
Phys. Rev. Lett. 102, 167403 (2009)
We find that detuning an optical pulse train from electronic transitions in quantum dots controls the direction of nuclear spin flips. The optical pulse train generates electron spins that precess about an applied magnetic field, with a spin componen
Externí odkaz:
http://arxiv.org/abs/0901.2583
Autor:
Economou, Sophia E., Reinecke, T. L.
Publikováno v:
Phys. Rev. B 78, 115306 (2008)
We propose a fast optically induced two-qubit \textsc{c-phase} gate between two resident spins in a pair of coupled quantum dots. An excited bound state which extends over the two dots provides an effective electron-electron exchange interaction. The
Externí odkaz:
http://arxiv.org/abs/0809.2110
Autor:
Scheibner, M., Ponomarev, I. V., Stinaff, E. A., Doty, M. F., Bracker, A. S., Hellberg, C. S., Reinecke, T. L., Gammon, D.
Publikováno v:
Phys. Rev. Lett. 99, 197402 (2007)
We present photoluminescence studies of the molecular neutral biexciton-exciton spectra of individual vertically stacked InAs/GaAs quantum dot pairs. We tune either the hole or the electron levels of the two dots into tunneling resonances. The spectr
Externí odkaz:
http://arxiv.org/abs/0705.1205
Autor:
Economou, Sophia E., Reinecke, T. L.
A method is proposed for the optical rotation of the spin of an electron in a quantum dot using excited trion states to implement operations up to two orders of magnitude faster than those of most existing proposals. Key ingredients are the geometric
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703098