Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Ladd, T. D."'
Autor:
Liles, S. D., Martins, F., Miserev, D. S., Kiselev, A. A., Thorvaldson, I. D., Rendell, M. J., Jin, I. K., Hudson, F. E., Veldhorst, M., Itoh, K. M., Sushkov, O. P., Ladd, T. D., Dzurak, A. S., Hamilton, A. R.
Single holes confined in semiconductor quantum dots are a promising platform for spin qubit technology, due to the electrical tunability of the $g$-factor of holes. However, the underlying mechanisms that enable electric spin control remain unclear d
Externí odkaz:
http://arxiv.org/abs/2012.04985
Autor:
Kerckhoff, J., Sun, B., Fong, B. H., Jones, C., Kiselev, A. A., Barnes, D. W., Noah, R. S., Acuna, E., Akmal, M., Ha, S. D., Wright, J. A., Thomas, B. J., Jackson, C. A. C., Edge, L. F., Eng, K., Ross, R. S., Ladd, T. D.
Publikováno v:
PRX Quantum 2, 010347 (2021)
We study the time-fluctuating magnetic gradient noise mechanisms in pairs of Si/SiGe quantum dots using exchange echo noise spectroscopy. We find through a combination of spectral inversion and correspondence to theoretical modeling that quadrupolar
Externí odkaz:
http://arxiv.org/abs/2009.08079
Autor:
Borjans, F., Croot, X., Putz, S., Mi, X., Quinn, S. M., Pan, A., Kerckhoff, J., Pritchett, E. J., Jackson, C. A., Edge, L. F., Ross, R. S., Ladd, T. D., Borselli, M. G., Gyure, M. F., Petta, J. R.
Publikováno v:
Appl. Phys. Lett. 116, 234001 (2020)
Coherent charge-photon and spin-photon coupling has recently been achieved in silicon double quantum dots (DQD). Here we demonstrate a versatile split-gate cavity-coupler that allows more than one DQD to be coupled to the same microwave cavity. Measu
Externí odkaz:
http://arxiv.org/abs/2003.01088
Autor:
Zhao, R., Tanttu, T., Tan, K. Y., Hensen, B., Chan, K. W., Hwang, J. C. C., Leon, R. C. C., Yang, C. H., Gilbert, W., Hudson, F. E., Itoh, K. M., Kiselev, A. A., Ladd, T. D., Morello, A., Laucht, A., Dzurak, A. S.
Publikováno v:
Nat Commun 10, 5500 (2019)
Single-electron spin qubits employ magnetic fields on the order of 1 Tesla or above to enable quantum state readout via spin-dependent-tunnelling. This requires demanding microwave engineering for coherent spin resonance control and significant on-ch
Externí odkaz:
http://arxiv.org/abs/1812.08347
Autor:
Andrews, R. W., Jones, C., Reed, M. D., Jones, A. M., Ha, S. D., Jura, M. P., Kerckhoff, J., Levendorf, M., Meenehan, S., Merkel, S. T., Smith, A., Sun, B., Weinstein, A. J., Rakher, M. T., Ladd, T. D., Borselli, M. G.
Publikováno v:
Nature Nanotechnology 14, 747-750 (2019)
Quantum computation requires qubits that satisfy often-conflicting criteria, including scalable control and long-lasting coherence. One approach to creating a suitable qubit is to operate in an encoded subspace of several physical qubits. Though such
Externí odkaz:
http://arxiv.org/abs/1812.02693
Autor:
Reed, M. D., Maune, B. M., Andrews, R. W., Borselli, M. G., Eng, K., Jura, M. P., Kiselev, A. A., Ladd, T. D., Merkel, S. T., Milosavljevic, I., Pritchett, E. J., Rakher, M. T., Ross, R. S., Schmitz, A. E., Smith, A., Wright, J. A., Gyure, M. F., Hunter, A. T.
Publikováno v:
Phys. Rev. Lett. 116, 110402 (2016)
We demonstrate improved operation of exchange-coupled semiconductor quantum dots by substantially reducing the sensitivity of exchange operations to charge noise. The method involves biasing a double-dot symmetrically between the charge-state anti-cr
Externí odkaz:
http://arxiv.org/abs/1508.01223
Autor:
De Greve, K., Clark, S. M., Sleiter, D., Sanaka, K., Ladd, T. D., Panfilova, M., Pawlis, A., Lischka, K., Yamamoto, Y.
Publikováno v:
Appl. Phys. Lett. 97, 241913 (2010)
We report on the optical investigation of single electron spins bound to fluorine donor impurities in ZnSe. Measurements of photon antibunching establish the presence of single, isolated optical emitters, and magneto-optical studies are consistent wi
Externí odkaz:
http://arxiv.org/abs/1009.2268
Publikováno v:
New J. Phys. 12 093028 (2010)
We propose a novel optical and electrical hybrid scheme for the measurement of nuclear spin qubits in silicon. By combining the environmental insensitivity of the integer quantum Hall effect with the optically distinguishable hyperfine states of phos
Externí odkaz:
http://arxiv.org/abs/1005.1064
Autor:
Ladd, T. D., Yamamoto, Y.
We present a method to enact a deterministic, measurement-free, optically generated controlled-phase gate on two qubits defined by single electrons trapped in large-area quantum dots in a planar microcavity. This method is robust to optical quantum d
Externí odkaz:
http://arxiv.org/abs/0910.4988
Simultaneous sub-second hyperpolarization of the nuclear and electron spins of phosphorus in silicon
Autor:
Yang, A., Steger, M., Sekiguchi, T., Thewalt, M. L. W., Ladd, T. D., Itoh, K. M., Riemann, H., Abrosimov, N. V., Becker, P., Pohl, H. -J.
Publikováno v:
Phys. Rev. Lett. 102, 257401 (2009)
We demonstrate a method which can hyperpolarize both the electron and nuclear spins of 31P donors in Si at low field, where both would be essentially unpolarized in equilibrium. It is based on the selective ionization of donors in a specific hyperfin
Externí odkaz:
http://arxiv.org/abs/0903.1634