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Title: A dressed spin qubit in silicon

Journal Article · · Nature Nanotechnology

Coherent dressing of a quantum two-level system provides access to a new quantum system with improved properties—a different and easily tunable level splitting, faster control and longer coherence times. In our work we investigate the properties of the dressed, donor-bound electron spin in silicon, and assess its potential as a quantum bit in scalable architectures. The two dressed spin-polariton levels constitute a quantum bit that can be coherently driven with an oscillating magnetic field, an oscillating electric field, frequency modulation of the driving field or a simple detuning pulse. We measure coherence times of T*2p = 2.4 ms and THahn2p = 9 ms, one order of magnitude longer than those of the undressed spin. Moreover, the use of the dressed states enables coherent coupling of the solid-state spins to electric fields and mechanical oscillations.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1329153
Journal Information:
Nature Nanotechnology, Journal Name: Nature Nanotechnology; ISSN 1748-3387
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (28)

Synthetic Hilbert Space Engineering of Molecular Qu d its: Isotopologue Chemistry journal February 2019
Observation of transferred dressed spin effect via metastability-exchange collisions in $$^{3}\text {He}$$ atoms journal August 2019
Quantum sensing of weak radio-frequency signals by pulsed Mollow absorption spectroscopy journal October 2017
Narrow-bandwidth sensing of high-frequency fields with continuous dynamical decoupling journal October 2017
Adiabatic two-qubit gates in capacitively coupled quantum dot hybrid qubits journal September 2019
Fidelity benchmarks for two-qubit gates in silicon journal May 2019
Extension of the Coherence Time by Generating MW Dressed States in a Single NV Centre in Diamond journal September 2019
Molecular spin qudits for quantum algorithms journal January 2018
A fabrication guide for planar silicon quantum dot heterostructures journal February 2018
Robust optical clock transitions in trapped ions using dynamical decoupling journal August 2019
Synthetic clock transitions via continuous dynamical decoupling journal January 2018
Charge qubit in van der Waals heterostructures journal September 2019
Dynamically modulated Autler-Townes effect in a transmon qubit journal July 2017
Quantum-limited measurement of spin qubits via curvature couplings to a cavity journal June 2019
Exploring quantum chaos with a single nuclear spin journal October 2018
Floquet Spectroscopy of a Strongly Driven Quantum Dot Charge Qubit with a Microwave Resonator journal July 2018
Quantum Rifling: Protecting a Qubit from Measurement Back Action journal February 2020
Robust optical clock transitions in trapped ions using dynamical decoupling other January 2019
Synthetic Hilbert Space Engineering of Molecular Qudits: Isotopologue Chemistry text January 2019
Quantum-limited measurement of spin qubits via curvature coupling to a cavity text January 2017
Narrow-bandwidth sensing of high-frequency fields with continuous dynamical decoupling text January 2017
Synthetic clock transitions via continuous dynamical decoupling text January 2017
Extension of the Coherence Time by Generating MW Dressed States in a Single NV Centre in Diamond preprint January 2017
A fabrication guide for planar silicon quantum dot heterostructures text January 2017
Molecular Spin Qudits for Quantum Algorithms text January 2017
Charge qubit in van der Waals heterostructures text January 2019
Quantum rifling: protecting a qubit from measurement back-action text January 2019
Quantum Sensing of Weak Radio-Frequency Signals by Pulsed Mollow Absorption Spectroscopy text January 2017

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