Fast Room-Temperature Phase Gate on a Single Nuclear Spin in Diamond

Autor:	Sangtawesin, S., Brundage, T. O., Petta, J. R.
Rok vydání:	2014
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	Phys. Rev. Lett. 113, 020506 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.113.020506
Popis:	Nuclear spins support long lived quantum coherence due to weak coupling to the environment, but are difficult to rapidly control using nuclear magnetic resonance (NMR) as a result of the small nuclear magnetic moment. We demonstrate a fast ~ 500 ns nuclear spin phase gate on a 14N nuclear spin qubit intrinsic to a nitrogen-vacancy (NV) center in diamond. The phase gate is enabled by the hyperfine interaction and off-resonance driving of electron spin transitions. Repeated applications of the phase gate bang-bang decouple the nuclear spin from the environment, locking the spin state for up to ~ 140 microseconds. Comment: Related papers at http://pettagroup.princeton.edu
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.3311 Zobrazit plný text záznamu View this record from Arxiv