Scalable hyperfine qubit state detection via electron shelving in the 2D5/2 and 2F7/2 manifolds in 171Yb+

@article{Edmunds2021ScalableHQ,
  title={Scalable hyperfine qubit state detection via electron shelving in the 
2D5/2
 and 
2F7/2
 manifolds in 
171Yb+},
  author={Claire L. Edmunds and Ting Rei Tan and Alistair R. Milne and A. Singh and Michael J. Biercuk and Cornelius Hempel},
  journal={Physical Review A},
  year={2021}
}
Qubits encoded in hyperfine states of trapped ions are ideal for quantum computation given their long lifetimes and low sensitivity to magnetic fields, yet they suffer from off-resonant scattering during detection often limiting their measurement fidelity. In Yb this is exacerbated by a low fluorescence yield, which leads to a need for complex and expensive hardware – a problematic bottleneck especially when scaling up the number of qubits. We demonstrate a detection routine based on electron… 

Figures and Tables from this paper

Realizing coherently convertible dual-type qubits with the same ion species
Trapped ions constitute one of the most promising systems for implementing quantum computing and networking. For large-scale ion-trap-based quantum computers and networks, it is critical to have two
High-fidelity indirect readout of trapped-ion hyperfine qubits
Stephen D. Erickson, 2, ∗ Jenny J. Wu, 2 Pan-Yu Hou, 2 Daniel C. Cole, Shawn Geller, 2 Alex Kwiatkowski, 2 Scott Glancy, Emanuel Knill, 3 Daniel H. Slichter, Andrew C. Wilson, and Dietrich Leibfried
Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson
Joonseok Hur, ∗ Diana P. L. Aude Craik, ∗ Eugene Knyazev, Ian Counts, Luke Caldwell, Calvin Leung, Swadha Pandey, Julian C. Berengut, Amy Geddes, Witold Nazarewicz, Paul-Gerhard Reinhard, Akio
Precision characterization of the D5/22 state and the quadratic Zeeman coefficient in Yb+171
We report measurements of the branching fraction, hyperfine constant, and second-order Zeeman coefficient of the D5/2 level in Ybwith up to two orders-of-magnitude improvement in precision compared

References

SHOWING 1-10 OF 103 REFERENCES
High-fidelity manipulation of a qubit enabled by a manufactured nucleus
The recently demonstrated trapping and laser cooling of 133 Ba + has opened the door to the use of this nearly ideal atom for quantum information processing. However, before high-fidelity qubit
State selective detection of hyperfine qubits
In order to faithfully detect the state of an individual two-state quantum system (qubit) realized using, for example, a trapped ion or atom, state selective scattering of resonance fluorescence is
High-speed low-crosstalk detection of a 171Yb+ qubit using superconducting nanowire single photon detectors
Qubits used in quantum computing suffer from errors, either from the qubit interacting with the environment, or from imperfect quantum logic gates. Effective quantum error correcting codes require a
High-fidelity state detection and tomography of a single-ion Zeeman qubit
We demonstrate high-fidelity Zeeman qubit state detection in a single trapped 88Sr+ ion. Qubit readout is performed by shelving one of the qubit states to a metastable level using a narrow linewidth
Submicrosecond entangling gate between trapped ions via Rydberg interaction
TLDR
A quantum system combining the accuracy of trapped ions and the speed of Rydberg atoms is reported and the implemented fast gate is a step towards a scalable quantum computer.
171Yb+ 5D3/2 hyperfine state detection and F = 2 lifetime
even isotopes as well as improvedsensitivity for D state hyperfine discrimination in odd isotopes.Keywords: atomic state lifetimes, ion trapping, ytterbium(Some figures may appear in colour only in the
Fast quantum logic gates with trapped-ion qubits
TLDR
This work demonstrates entanglement generation for gate times as short as 480 nanoseconds—less than a single oscillation period of an ion in the trap and eight orders of magnitude shorter than the memory coherence time measured in similar calcium-43 hyperfine qubits.
The role of master clock stability in quantum information processing
TLDR
This manuscript articulate the impact of instabilities in the master clock on qubit phase coherence and provides tools to calculate the contributions to qubit error arising from these processes, and uses representative lab-grade and performance-grade oscillator specifications to calculate operational fidelity bounds.
Buffer gas cooling of a trapped ion to the quantum regime
Great advances in precision measurements in the quantum regime have been achieved with trapped ions and atomic gases at the lowest possible temperatures 1 – 3 . These successes have inspired ideas to
Quantum computations on a topologically encoded qubit
TLDR
A quantum error-correcting code in which one qubit is encoded in entangled states distributed over seven trapped-ion qubits, which represents a fully functional instance of a topologically encoded qubit, or color code, and opens a route toward fault-tolerant quantum computing.
...
1
2
3
4
5
...