Zobrazeno 1 - 10
of 269
pro vyhledávání: '"J. F. Goodwin"'
Publikováno v:
New Journal of Physics, Vol 25, Iss 1, p 013004 (2023)
The generation of entanglement between distant atoms via single photons is the basis for networked quantum computing, a promising route to large-scale trapped-ion and trapped-atom processors. Locating the emitter within an optical cavity provides an
Externí odkaz:
https://doaj.org/article/b2b0284e745f4d1aab226bfb3883d89f
We present a design for an atomic oven suitable for loading ion traps, which is operated via optical heating with a continuous-wave multimode diode laser. The absence of the low-resistance electrical connections necessary for Joule heating allows the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a8610f60c0f67cae6adcfb0a8f37b14
https://doi.org/10.1063/5.0038162
https://doi.org/10.1063/5.0038162
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.
Autor:
D. P. Nadlinger, L. J. Stephenson, C. J. Ballance, B. C. Nichol, J. F. Goodwin, Shuoming An, D. M. Lucas, P. Drmota
Publikováno v:
Quantum Information and Measurement (QIM) V: Quantum Technologies.
We discuss a scalable approach to networking trapped-ion quantum processors. We present initial networking results, showing that we can connect registers of near-perfect trapped-ion data qubits via a flexible photonic link.
Autor:
J. F. Goodwin, L. J. Stephenson, D. P. Nadlinger, C. J. Ballance, P. Drmota, B. C. Nichol, K. Thirumalai, T. G. Ballance, Shuoming An, D. M. Lucas
Publikováno v:
Physical Review Letters
We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link with fidelity and rate approaching those of local operations. Two ${}^{88}$Sr${}^{+}$ qubits are entangled via the polarization degree of freedom of two photons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e42ef606e2078a6d176f9c1cba1b39ec
Publikováno v:
Review of Scientific Instruments. 89(5)
Ion traps are often loaded from atomic beams produced by resistively heated ovens. We demonstrate an atomic oven which has been designed for fast control of the atomic flux density and reproducible construction. We study the limiting time constants o
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 $^
We have recently demonstrated the laser cooling of a single $^{40}$Ca$^+$ ion to the motional ground state in a Penning trap using the resolved-sideband cooling technique on the electric quadrupole transition S$_{1/2} \leftrightarrow$ D$_{5/2}$. Here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::567d1c3b53131c8be84e6a1b3e949563
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