Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Allcock, D. T. C."'
Autor:
Löschnauer, C. M., Toba, J. Mosca, Hughes, A. C., King, S. A., Weber, M. A., Srinivas, R., Matt, R., Nourshargh, R., Allcock, D. T. C., Ballance, C. J., Matthiesen, C., Malinowski, M., Harty, T. P.
The central challenge of quantum computing is implementing high-fidelity quantum gates at scale. However, many existing approaches to qubit control suffer from a scale-performance trade-off, impeding progress towards the creation of useful devices. H
Externí odkaz:
http://arxiv.org/abs/2407.07694
Autor:
Metzner, J., Quinn, A., Brudney, S., Moore, I. D., Burd, S. C., Wineland, D. J., Allcock, D. T. C
We experimentally implement circuits of one and two mode operations on two motional modes of a single trapped ion. This is achieved by implementing the required displacement, squeezing, two-mode squeezing, and beamsplitter operations using oscillatin
Externí odkaz:
http://arxiv.org/abs/2312.10847
Publikováno v:
PRX Quantum 4, 040313 (2023)
One of the most formidable challenges of scaling up quantum computers is that of control signal delivery. Today's small-scale quantum computers typically connect each qubit to one or more separate external signal sources. This approach is not scalabl
Externí odkaz:
http://arxiv.org/abs/2305.12773
Autor:
Burd, S. C., Knaack, H. M., Srinivas, R., Arenz, C., Collopy, A. L., Stephenson, L. J., Wilson, A. C., Wineland, D. J., Leibfried, D., Bollinger, J. J., Allcock, D. T. C., Slichter, D. H.
We show experimentally that a broad class of interactions involving quantum harmonic oscillators can be made stronger (amplified) using a unitary squeezing protocol. While our demonstration uses the motional and spin states of a single trapped $^{25}
Externí odkaz:
http://arxiv.org/abs/2304.05529
Autor:
Moore, I. D., Campbell, W. C., Hudson, E. R., Boguslawski, M. J., Wineland, D. J., Allcock, D. T. C.
Publikováno v:
Phys. Rev. A 107, 032413 (2023)
We study photon scattering errors in stimulated Raman driven quantum logic gates. For certain parameter regimes, we find that previous, simplified models of the process significantly overestimate the gate error rate due to photon scattering. This ove
Externí odkaz:
http://arxiv.org/abs/2211.00744
Autor:
Srinivas, R., Löschnauer, C. M., Malinowski, M., Hughes, A. C., Nourshargh, R., Negnevitsky, V., Allcock, D. T. C., King, S. A., Matthiesen, C., Harty, T. P., Ballance, C. J.
We present a new method for coherent control of trapped ion qubits in separate interaction regions of a multi-zone trap by simultaneously applying an electric field and a spin-dependent gradient. Both the phase and amplitude of the effective single-q
Externí odkaz:
http://arxiv.org/abs/2210.16129
Publikováno v:
Phys. Rev. A 107, 032604 (2023)
We propose a new scheme for individual addressing of trapped ion qubits, selecting them via their motional frequency. We show that geometric phase gates can perform single-qubit rotations using the coherent interference of spin-independent and (globa
Externí odkaz:
http://arxiv.org/abs/2206.06546
The majority of microfabricated ion traps in use for quantum information processing are of the 2D 'surface-electrode' type or of the 3D 'wafer' type. Surface-electrode traps greatly simplify fabrication and hold the promise of allowing trapped-ion qu
Externí odkaz:
http://arxiv.org/abs/2205.15892
Autor:
Allcock, D. T. C., Campbell, W. C., Chiaverini, J., Chuang, I. L., Hudson, E. R., Moore, I. D., Ransford, A., Roman, C., Sage, J. M., Wineland, D. J.
Publikováno v:
Appl. Phys. Lett. 119, 214002 (2021)
Quantum computers, much like their classical counterparts, will likely benefit from flexible qubit encodings that can be matched to different tasks. For trapped ion quantum processors, a common way to access multiple encodings is to use multiple, co-
Externí odkaz:
http://arxiv.org/abs/2109.01272
Publikováno v:
Phys. Rev. A 104, 052804 (2021)
We report precision measurements of the nuclear magnetic moment of \textsuperscript{43}Ca\textsuperscript{+}, made by microwave spectroscopy of the 4s $^2$S$_{1/2}$ $\left|F=4, M=0\right\rangle \rightarrow \left|F=3, M=1\right\rangle$ ground level hy
Externí odkaz:
http://arxiv.org/abs/2105.10352