Zobrazeno 1 - 10
of 22
pro vyhledávání: '"T. P. Harty"'
Publikováno v:
Physical Review A. 104
We report precision measurements of the nuclear magnetic moment of $^{43}\mathrm{Ca}^{+}$, made by microwave spectroscopy of the $4s\phantom{\rule{0.16em}{0ex}}^{2}S_{1/2}|F=4,\phantom{\rule{0.28em}{0ex}}M=0\ensuremath{\rangle}\ensuremath{\rightarrow
Autor:
Daniel H. Slichter, T. P. Harty, D. P. Nadlinger, Jakub Jarosiński, Marius Weber, Tomasz Przywózki, Mikołaj Sowiński, Weida Zhang, Sébastien Bourdeauducq, David Allcock, Michal Gaska, Norman Krackow, Dorota Nowicka, Christopher Balance, Paweł Kulik, Grzegorz Kasprowicz, Joseph W. Britton, Robert Jördens, Krzysztof T. Pozniak
Publikováno v:
QCE
Trapping ions, performing qubit operations and quantum multi-qubit gates require complex pulse spectra on several frequency bands. The Smart Arbitrary Waveform Generators (SAWG) Sayma and Phaser are designed to trap control and generate the Short-tim
Autor:
D T C Allcock, T P Harty, M A Sepiol, H A Janacek, C J Ballance, A M Steane, D M Lucas, D N Stacey
Publikováno v:
New Journal of Physics, Vol 18, Iss 2, p 023043 (2016)
We demonstrate simple and robust methods for Doppler cooling and obtaining high fluorescence from trapped ^43 Ca ^+ ions at a magnetic field of 146 Gauss. This field gives access to a magnetic-field-independent ‘atomic clock’ qubit transition wit
Externí odkaz:
https://doaj.org/article/b5887cb8f4a344ad8938b02ec33eff83
Autor:
D. M. Lucas, J. F. Goodwin, D. P. Nadlinger, T. P. Harty, T. G. Ballance, C. J. Ballance, J. E. Tarlton, Andrew M. Steane, M. A. Sepiol, A. C. Hughes
Publikováno v:
Physical Review Letters
Robust qubit memory is essential for quantum computing, both for near-term devices operating without error correction, and for the long-term goal of a fault-tolerant processor. We directly measure the memory error $\epsilon_m$ for a $^{43}$Ca$^+$ tra
Autor:
T. P. Harty, Andrew M. Steane, J. F. Goodwin, Marius Weber, Ryan K. Hanley, Jochen. Wolf, D. M. Lucas, Clemens. M. Löschnauer
Publikováno v:
Quantum Information and Measurement (QIM) V: Quantum Technologies.
We present the design and initial characterisation of a next-generation surface-electrode ion-trap designed for room-temperature or cryogenic operation, that will aim to improve both the fidelity and speed achieved in microwave-driven quantum gates.
High-fidelity spatial and polarization addressing of Ca+43 qubits using near-field microwave control
Autor:
C. J. Ballance, Norbert M. Linke, M. A. Sepiol, D. N. Stacey, D. T. C. Allcock, D. P. L. Aude Craik, T. P. Harty, J. F. Goodwin, D. M. Lucas, Andrew M. Steane
Publikováno v:
Physical Review A. 95
Individual addressing of qubits is essential for scalable quantum computation. Spatial addressing allows unlimited numbers of qubits to share the same frequency, while enabling arbitrary parallel operations. We demonstrate addressing of long-lived $^
Autor:
T.G. Balance, Jochen. Wolf, C.J. Balance, V. M. Schäfer, L. J. Stephenson, J. F. Goodwin, K. Thirumalai, M. A. Sepiol, Alan Hughes, D. M. Lucas, Clemens. M. Löschnauer, Andrew M. Steane, T. P. Harty, J. E. Tarlton, D. P. L. Aude Craik
Publikováno v:
Quantum Information and Measurement (QIM) 2017.
I will describe recent experimental work at Oxford on implementing elementary one- and two-qubit operations with the high fidelities (99.9% or more) required for the implementation of quantum error correction, using trapped-ion “atomic clock” qub
We demonstrate a two-qubit logic gate driven by near-field microwaves in a room-temperature microfabricated surface ion trap. We introduce a dynamically decoupled gate method, which stabilizes the qubits against fluctuating energy shifts and avoids t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9290f4c211b79d3dde7f031ba7bd6284
https://ora.ox.ac.uk/objects/uuid:2784ab85-b8ea-4af7-a016-682384611ea2
https://ora.ox.ac.uk/objects/uuid:2784ab85-b8ea-4af7-a016-682384611ea2
Autor:
C. J. Ballance, Andrew M. Steane, D. M. Lucas, David Allcock, D. P. L. Aude Craik, T. P. Harty, Norbert M. Linke
Publikováno v:
Applied Physics B. 114:3-10
We propose a surface ion trap design incorporating microwave control electrodes for near-field single-qubit control. The electrodes are arranged so as to provide arbitrary frequency, amplitude and polarization control of the microwave field in one tr
Autor:
Andrew M. Steane, David Allcock, Matthew Glenn Blain, C. J. Ballance, S. D. Habermehl, T. P. Harty, D. L. Moehring, H. A. Janacek, Norbert M. Linke, D. M. Lucas, Daniel Lynn Stick, R. L. Jarecki
We characterise the performance of a surface-electrode ion "chip" trap fabricated using established semiconductor integrated circuit and micro-electro-mechanical-system (MEMS) microfabrication processes which are in principle scalable to much larger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a059047e28f36d8ee212faeda8fc165
https://doi.org/10.1007/s00340-011-4788-5
https://doi.org/10.1007/s00340-011-4788-5