title: Quantum computation using vortices and majorana zero modes of a px + ipy superfluid of fermionic cold atoms.
abstract: We propose to use the recently predicted two-dimensional "weak-pairing" px + ipy superfluid state of fermionic cold atoms as a platform for topological quantum computation. In the core of a vortex, this state supports a zero-energy Majorana mode, which moves to finite energy in the corresponding topologically trivial "strong-pairing" state. By braiding vortices in the "weak-pairing" state, unitary quantum gates can be applied to the Hilbert space of Majorana zero modes. For readout of the topological qubits, we propose realistic schemes suitable for atomic superfluids.
authors.affiliation: Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, MD 20742, USA.
authors.forename: Sumanta
authors.initials: S
authors.lastname: Tewari
authors.forename: S
authors.initials: S
authors.lastname: Das Sarma
authors.forename: Chetan
authors.initials: C
authors.lastname: Nayak
authors.forename: Chuanwei
authors.initials: C
authors.lastname: Zhang
authors.forename: P
authors.initials: P
authors.lastname: Zoller