Melden Sie sich zuerst an, um alle Funktionen optimal nutzen zu können!

Storing quantum information for 30 seconds in a nanoelectronic device (Englisch)

In: nature nanotechnology   ;  9 ,  12  ;  986-991  ;  2014
  • ISSN:
    1748-3387
  • Aufsatz (Zeitschrift)  /  Print

Exportieren, teilen und zitieren

The spin of an electron or a nucleus in a semiconductor naturally implements the unit of quantum information - the qubit. In addition, because semiconductors are currently used in the electronics industry, developing qubits in semiconductors would be a promising route to realize scalable quantum information devices. The solid-state environment, however, may provide deleterious interactions between the qubit and the nuclear spins of surrounding atoms, or charge and spin fluctuations arising from defects in oxides and interfaces. For materials such as silicon, enrichment of the spin-zero 28Si isotope drastically reduces spin-bath decoherence. Experiments on bulk spin ensembles in 28Si crystals have indeed demonstrated extraordinary coherence times. However, it remained unclear whether these would persist at the single-spin level, in gated nanostructures near amorphous interfaces. Here, we present the coherent operation of individual 31P electron and nuclear spin qubits in a top-gated nanostructure, fabricated on an isotopically engineered 28Si substrate. The 31P nuclear spin sets the new benchmark coherence time (>30s with Carr-Purcell-Meiboom-Gill (CPMG) sequence) of any single qubit in the solid state and reaches >99.99% control fidelity. The electron spin CPMG coherence time exceeds 0.5 s, and detailed noise spectroscopy indicates that - contrary to widespread belief - it is not limited by the proximity to an interface. Instead, decoherence is probably dominated by thermal and magnetic noise external to the device, and is thus amenable to further improvement.

Inhaltsverzeichnis – Band 9, Ausgabe 12

Zeige alle Jahrgänge und Ausgaben

Die Inhaltsverzeichnisse werden automatisch erzeugt und basieren auf den im Index des TIB-Portals verfügbaren Einzelnachweisen der enthaltenen Beiträge. Die Anzeige der Inhaltsverzeichnisse kann daher unvollständig oder lückenhaft sein.

949
Joining the reproducibility initiative
| 2014
951
The promise and challenge of nanostructured solar cells
Beard, M. C. / Luther, J. M. / Nozik, A. J. et al. | 2014
955
Could we 3D print an artificial mind?
Maynard, A. D. et al. | 2014
957
Our choice from the recent literature
| 2014
959
Cancer biomarkers: Detected twice for good measure
Longo, G. et al. | 2014
960
Molecular electronics: A DNA that conducts
Scheer, E. et al. | 2014
962
Batteries: Knowing when small is better
Braun, P. V. / Nuzzo, R. G. et al. | 2014
963
Nanomechanics: Nanotubes resound better
Khivrich, I. / Ilani, S. et al. | 2014
965
Molecular spintronics: Topology communicates
Cinchetti, M. et al. | 2014
966
Quantum computation: Silicon comes back
Schreiber, L. R. / Bluhm, H. et al. | 2014
968
Correction
| 2014
969
Advancing the speed, sensitivity and accuracy of biomolecular detection using multi-length-scale engineering
Kelley, S. O. / Mirkin, C. A. / Walt, D. R. / Ismagilov, R. F. / Toner, M. / Sargent, E. H. et al. | 2014
981
An addressable quantum dot qubit with fault-tolerant control-fidelity
Veldhorst, M. / Hwang, J. C. / Yang, C. H. / Leenstra, A. W. / de Ronde, B. / Dehollain, J. P. / Muhonen, J. T. / Hudson, F. E. / Itoh, K. M. / Morello, A. et al. | 2014
986
Storing quantum information for 30 seconds in a nanoelectronic device
Muhonen, J. T. / Dehollain, J. P. / Laucht, A. / Hudson, F. E. / Kalra, R. / Sekiguchi, T. / Itoh, K. M. / Jamieson, D. N. / McCallum, J. C. / Dzurak, A. S. et al. | 2014
992
Stable magnetic droplet solitons in spin-transfer nanocontacts
Macià, F. / Backes, D. / Kent, A. D. et al. | 2014
997
Nanoscale spin rectifiers controlled by the Stark effect
Francesco Rossella et al. | 2014
1002
Feedback-driven self-assembly of symmetry-breaking optical metamaterials in solution
Yang, S. / Ni, X. / Yin, X. / Kante, B. / Zhang, P. / Zhu, J. / Wang, Y. / Zhang, X. et al. | 2014
1007
Nanotube mechanical resonators with quality factors of up to 5 million
J Moser et al. | 2014
1012
Visualization of charge propagation along individual pili proteins using ambient electrostatic force microscopy
Malvankar, N. S. / Yalcin, S. E. / Tuominen, M. T. / Lovley, D. R. et al. | 2014
1018
Long-range magnetic coupling between nanoscale organic–metal hybrids mediated by a nanoskyrmion lattice
Brede, J. / Atodiresei, N. / Caciuc, V. / Bazarnik, M. / Al-Zubi, A. / Blügel, S. / Wiesendanger, R. et al. | 2014
1024
Lateral epitaxial growth of two-dimensional layered semiconductor heterojunctions
Duan, X. / Wang, C. / Shaw, J. C. / Cheng, R. / Chen, Y. / Li, H. / Wu, X. / Tang, Y. / Zhang, Q. / Pan, A. et al. | 2014
1031
An all-in-one nanopore battery array
Liu, C. / Gillette, E. I. / Chen, X. / Pearse, A. J. / Kozen, A. C. / Schroeder, M. A. / Gregorczyk, K. E. / Lee, S. B. / Rubloff, G. W. et al. | 2014
1040
Long-range charge transport in single G-quadruplex DNA molecules
Livshits, G. I. / Stern, A. / Rotem, D. / Borovok, N. / Eidelshtein, G. / Migliore, A. / Penzo, E. / Wind, S. J. / Di Felice, R. / Skourtis, S. S. et al. | 2014
1047
Detection of cancer biomarkers in serum using a hybrid mechanical and optoplasmonic nanosensor
Kosaka, P. M. / Pini, V. / Ruz, J. J. / da Silva, R. A. / González, M. U. / Ramos, D. / Calleja, M. / Tamayo, J. et al. | 2014
1054
Squalenoyl adenosine nanoparticles provide neuroprotection after stroke and spinal cord injury
Gaudin, A. / Yemisci, M. g. / Eroglu, H. / Lepetre-Mouelhi, S. / Turkoglu, O. F. / Dönmez-Demir, B. / Caban, S. i. / Sargon, M. F. / Garcia-Argote, S. b. / Pieters, G. g. et al. | 2014
1063
Erratum: Electronics based on two-dimensional materials
Fiori, G. / Bonaccorso, F. / Iannaccone, G. / Palacios, T. s. / Neumaier, D. / Seabaugh, A. / Banerjee, S. K. / Colombo, L. et al. | 2014
1064
Mission: Nano
Tasciotti, E. et al. | 2014

Exportieren, teilen und zitieren

Feedback