Synthetic clock transitions via continuous dynamical decoupling

@article{Trypogeorgos2018SyntheticCT,
  title={Synthetic clock transitions via continuous dynamical decoupling},
  author={D. Trypogeorgos and A. Vald{\'e}s-Curiel and Nathan Lundblad and I. B. Spielman},
  journal={Physical review. A},
  year={2018},
  volume={97}
}
Decoherence of quantum systems due to uncontrolled fluctuations of the environment presents fundamental obstacles in quantum science. Clock transitions which are insensitive to such fluctuations are used to improve coherence, however, they are not present in all systems or for arbitrary system parameters. Here we create a trio of synthetic clock transitions using continuous dynamical decoupling in a spin-1 Bose-Einstein condensate in which we observe a reduction of sensitivity to magnetic-field… Expand
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References

SHOWING 1-10 OF 67 REFERENCES
Robust dynamical decoupling with concatenated continuous driving
The loss of coherence is one of the main obstacles for the implementation of quantum information processing. The efficiency of dynamical decoupling schemes, which have been introduced to address thisExpand
Continuously decoupling single-qubit operations from a perturbing thermal bath of scalar bosons
We investigate the use of continuously applied external fields to maximize the fidelity of quantum logic operations performed on a decohering qubit. Assuming a known error operator and an environmentExpand
Continuous dynamical decoupling utilizing time-dependent detuning
Resilience to noise and to decoherence processes is an important ingredient for the implementation of quantum information processing, and quantum technologies. To this end, techniques such as pulsedExpand
DYNAMICAL SUPPRESSION OF DECOHERENCE IN TWO-STATE QUANTUM SYSTEMS
The dynamics of a decohering two-level system driven by a suitable control Hamiltonian is studied. The control procedure is implemented as a sequence of radio-frequency pulses that repetitively flipExpand
Coherence-protected quantum gate by continuous dynamical decoupling in diamond.
TLDR
This paper demonstrates experimentally on a nitrogen-vacancy system that by using a continuous-wave dynamical decoupling method, it might not only prolong the coherence time by about 20 times but also protect the quantum gates for the duration of the controlling time. Expand
Optimized dynamical decoupling in a model quantum memory
TLDR
The extension of a treatment to predict qubit decoherence under realistic conditions is extended, yielding strong agreement between experimental data and theory for arbitrary pulse sequences incorporating nonidealized control pulses, demonstrating the robustness of qubit memory error suppression through dynamical decoupling techniques across a variety of qubits. Expand
Experimental realization of time-dependent phase-modulated continuous dynamical decoupling
The coherence times achieved with continuous dynamical decoupling techniques are often limited by fluctuations in the driving amplitude. In this work, we use time-dependent phase-modulated continuousExpand
A dressed spin qubit in silicon.
TLDR
The properties of the dressed, donor-bound electron spin in silicon are investigated, and its potential as a quantum bit in scalable architectures is assessed. Expand
Robust trapped-ion quantum logic gates by continuous dynamical decoupling
We introduce a scheme that combines phonon-mediated quantum logic gates in trapped ions with the benefits of continuous dynamical decoupling. We demonstrate theoretically that a strong driving of theExpand
Decoherence control: Universal protection of two-qubit states and two-qubit gates using continuous driving fields
A field configuration utilizing local static and oscillating fields is constructed to achieve universal (but low-order) protection of two-qubit states. That is, two-qubit states can be protectedExpand
...
1
2
3
4
5
...