“Spin Qubits” Science-Research, January 2022 — summary from DOE Pages
DOE Pages — summary generated by Brevi Assistant
Systematic dressing of a quantum two-level system provides accessibility to a new quantum system with boosted properties- a varied and quickly tunable level splitting, faster control and longer comprehensibility times. We determine coherence times of T * 2p = 2. 4 ms and T Hahn 2p = 9 ms, one order of size longer than those of the undressed spin. The unrestrained interaction of a quantum system with its environment is detrimental to quantum comprehensibility. Below, we utilize a nano-electro-mechanical system to reduce the result of thermal phonons on a spin qubit- the silicon-vacancy colour centre in diamond- without changing the system temperature. Defect-based quantum systems in vast bandgap semiconductors are strong prospects for scalable quantum-information technologies. Here, we recognize a path around these drawbacks by revealing that a crafted quantum well can stabilize the cost state of a qubit. We report the control of solid-state qubits needs a comprehensive understanding of the decoherence mechanisms. Despite significant progression in uncovering the qubit dynamics in strong electromagnetic fields, decoherence at extremely low magnetic fields remains perplexing, and the duty of quadrupole combining of nuclear spins is badly understood. Solid-state quantum emitters with spin signs are promising systems for quantum communication, yet couple of emit in the slim telecom band essential for low-loss fiber networks. In vanadium sets, we identify the complex d 1 orbital physics in all 5 offered sites in 4H-SiC and 6H-SiC.
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- https://www.osti.gov/pages/biblio/1329153 — A dressed spin qubit in silicon.
- https://www.osti.gov/pages/biblio/1469655 — Controlling the coherence of a diamond spin qubit through its strain environment.
- https://www.osti.gov/pages/biblio/1592407 — Stabilization of point-defect spin qubits by quantum wells.
- https://www.osti.gov/pages/biblio/1492646 — Three-stage decoherence dynamics of an electron spin qubit in an optically active quantum dot.
- https://www.osti.gov/pages/biblio/1616990 — Vanadium spin qubits as telecom quantum emitters in silicon carbide.
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