scholarly journals Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity

MRS Advances ◽  
2017 ◽  
Vol 2 (41) ◽  
pp. 2189-2197 ◽  
Author(s):  
D. A. Hite ◽  
K. S. McKay ◽  
S. Kotler ◽  
D. Leibfried ◽  
D. J. Wineland ◽  
...  
Keyword(s):  
Electric Field ◽  
Quantum Information Processing ◽  
Ion Trap ◽  
Driving Mechanism ◽  
Heating Rates ◽  
Ion Heating ◽  
Scanned Probe Microscopy ◽  
Close Proximity ◽  
Field Noise

ABSTRACTElectric-field noise from the surfaces of ion-trap electrodes couples to the ion’s charge causing heating of the ion’s motional modes. This heating limits the fidelity of quantum gates implemented in quantum information processing experiments. The exact mechanism that gives rise to electric-field noise from surfaces is not well-understood and remains an active area of research. In this work, we detail experiments intended to measure ion motional heating rates with exchangeable surfaces positioned in close proximity to the ion, as a sensor to electric-field noise. We have prepared samples with various surface conditions, characterized in situ with scanned probe microscopy and electron spectroscopy, ranging in degrees of cleanliness and structural order. The heating-rate data, however, show no significant differences between the disparate surfaces that were probed. These results suggest that the driving mechanism for electric-field noise from surfaces is due to more than just thermal excitations alone.

scholarly journals Electric-field noise from thermally activated fluctuators in a surface ion trap

2019 ◽  
Vol 99 (6) ◽  
Author(s):  
Crystal Noel ◽  
Maya Berlin-Udi ◽  
Clemens Matthiesen ◽  
Jessica Yu ◽  
Yi Zhou ◽  
...  
Keyword(s):  
Electric Field ◽  
Ion Trap ◽  
Thermally Activated ◽  
Field Noise

scholarly journals Application of a self-injection locked cyan laser for Barium ion cooling and spectroscopy

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Anatoliy A. Savchenkov ◽  
Justin E. Christensen ◽  
David Hucul ◽  
Wesley C. Campbell ◽  
Eric R. Hudson ◽  
...  
Keyword(s):  
Laser Cooling ◽  
Quantum Information Processing ◽  
Ion Trap ◽  
Atomic Ions ◽  
Passive Stability ◽  
Semiconductor Laser Diode ◽  
Whispering Gallery ◽  
Fabry Perot ◽  
Whispering Gallery Mode Resonator

Abstract Compact, high power lasers with narrow linewidth are important tools for the manipulation of quantum systems. We demonstrate a compact, self-injection locked, Fabry-Perot semiconductor laser diode with high output power at 493 nm. A high quality factor magnesium fluoride whispering gallery mode resonator enables both high passive stability and 1 kHz instantaneous linewidth. We use this laser for laser-cooling, in-situ isotope purifcation, and probing barium atomic ions confined in a radio-frequency ion trap. The results here demonstrate the suitability of these lasers in trapped ion quantum information processing and for probing weak coherent optical transitions.

Modeling ion trap thermal noise decoherence

2007 ◽  
Vol 7 (1&2) ◽  
pp. 52-72
Author(s):  
D. Leibrandt ◽  
B. Yurke ◽  
R. Slusher
Keyword(s):  
Thermal Noise ◽  
Ion Trap ◽  
Thermal Fluctuation ◽  
Ion Traps ◽  
Heating Rates ◽  
Trap Electrode ◽  
Ion Heating ◽  
Vlsi Technology ◽  
Fluctuation Noise ◽  
Materials Used

We present a detailed analysis of ion heating caused by thermal fluctuation noise in ion traps. The results of the analysis are used to estimate thermal noise ion heating rates for a variety of trap electrode configurations and materials, including recent scalable multiplexed planar ion trap proposals based on silicon VLSI technology. We find that minimizing thermal noise ion heating places severe constraints on the design and materials used for ion traps.

In Situ Techniques for the Investigation of the Kinetics of Austenitization of Supermartensitic Stainless Steel

2016 ◽  
Vol 879 ◽  
pp. 1381-1386 ◽  
Author(s):  
Frank Nießen ◽  
Matteo Villa ◽  
Daniel Apel ◽  
Olaf Keßler ◽  
Michael Reich ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Heating Rates ◽  
Scanning Calorimetry ◽  
Supermartensitic Stainless Steel ◽  
Close Proximity ◽  
Transformation Curve ◽  
Two Stages ◽  
The Impact ◽  
Critical Annealing

The austenitization and inter-critical annealing of X4CrNiMo16-5-1 (1.4418) supermartensitic stainless steel were investigated in-situ with synchrotron X-ray diffraction (XRD), dilatometry and differential scanning calorimetry (DSC) under isochronal heating conditions. Austenitization occurred in two stages: the austenitization started at approx. 600 °C, decelerated at approx. 700 °C at 60 to 75 v.% of transformed austenite, and first resumed after heating for approx. 100 °C. This plateau in the transformation curve was more dominant for faster heating rates. Inter-critical annealing at 675 and 700 °C revealed, that austenite can to a certain extent be stabilized to room-temperature. There was good agreement for the transformation curves yielded by dilatometry and XRD. Some deviation occurred due to the different applied heating principles, different temperature monitoring and the impact of surface martensite formation on the XRD measurement. The applicable temperature range for DSC as well as the close proximity of the Ac1- and the Curie-temperature limited the usage of the technique in the present case.

scholarly journals Ion-trap measurements of electric-field noise near surfaces

2015 ◽  
Vol 87 (4) ◽  
pp. 1419-1482 ◽  
Author(s):  
M. Brownnutt ◽  
M. Kumph ◽  
P. Rabl ◽  
R. Blatt
Keyword(s):  
Electric Field ◽  
Ion Trap ◽  
Field Noise

scholarly journals Convenient Real-Time Monitoring of the Contamination of Surface Ion Trap

Nanomaterials ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 109 ◽  
Author(s):  
Xinfang Zhang ◽  
Yizhu Hou ◽  
Ting Chen ◽  
Wei Wu ◽  
Pingxing Chen
Keyword(s):  
Real Time ◽  
Treatment Process ◽  
Quantum Information Processing ◽  
Ion Trap ◽  
Ion Traps ◽  
Capacitance Change ◽  
Contact Potential ◽  
Practical Applications ◽  
The Relationship

Recent studies indicated that contamination by adatoms on the surface ion trap can generate contact potential, leading to fluctuations in patch potential. By investigating contamination induced by surface adatoms during a loading process, a direct physical image of the contamination process and the relationship between the capacitance change and the contamination from surface adatoms is examined theoretically and experimentally. From the relationship, the contamination by surface adatoms and the effect of in situ treatment process can be monitored by the capacitance between electrodes in real time. This study is foundational to further research on anomalous heating with practical applications in quantum information processing from surface ion traps.

scholarly journals Distance scaling and polarization of electric-field noise in a surface ion trap

2019 ◽  
Vol 100 (6) ◽  
Author(s):  
Da An ◽  
Clemens Matthiesen ◽  
Erik Urban ◽  
Hartmut Häffner
Keyword(s):  
Electric Field ◽  
Ion Trap ◽  
Field Noise

scholarly journals 100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleaned withIn SituArgon-Ion-Beam Bombardment

2012 ◽  
Vol 109 (10) ◽  
Author(s):  
D. A. Hite ◽  
Y. Colombe ◽  
A. C. Wilson ◽  
K. R. Brown ◽  
U. Warring ◽  
...  
Keyword(s):  
Electric Field ◽  
Ion Trap ◽  
Ion Beam ◽  
Fold Reduction ◽  
Field Noise

scholarly journals Distance scaling of electric-field noise in a surface-electrode ion trap

2018 ◽  
Vol 97 (2) ◽  
Author(s):  
J. A. Sedlacek ◽  
A. Greene ◽  
J. Stuart ◽  
R. McConnell ◽  
C. D. Bruzewicz ◽  
...  
Keyword(s):  
Electric Field ◽  
Ion Trap ◽  
Surface Electrode ◽  
Field Noise

scholarly journals Electric-field noise in a high-temperature superconducting surface ion trap

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
P. C. Holz ◽  
K. Lakhmanskiy ◽  
D. Rathje ◽  
P. Schindler ◽  
Y. Colombe ◽  
...  
Keyword(s):  
High Temperature ◽  
Electric Field ◽  
Ion Trap ◽  
High Temperature Superconducting ◽  
Field Noise
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