Quantum Gates and Multiparticle Entanglement by Rydberg Excitation Blockade and Adiabatic Passage
Apr 29, 20084 pages
Published in:
- Phys.Rev.Lett. 100 (2008) 17, 170504
- Published: Apr 29, 2008
Citations per year
Abstract: (APS)
We propose to apply stimulated adiabatic passage to transfer atoms from their ground state into Rydberg excited states. Atoms a few micrometers apart experience a dipole-dipole interaction among Rydberg states that is strong enough to shift the atomic resonance and inhibit excitation of more than a single atom. We show that the adiabatic passage in the presence of this interaction between two atoms leads to robust creation of maximally entangled states and to two-bit quantum gates. For many atoms, the excitation blockade leads to an effective implementation of collective-spin and Jaynes-Cummings–like Hamiltonians, and we show that the adiabatic passage can be used to generate collective Jx=0 eigenstates and Greenberger-Horne-Zeilinger states of tens of atoms.Received 25 February 2008DOI:https://doi.org/10.1103/PhysRevLett.100.170504©2008 American Physical Society- 03.67.Bg
- 03.65.Ud
- 42.50.Dv
- 42.50.Ex
References(22)
Figures(0)