title: Quantum Network of Atom Clocks: A Possible Implementation with Neutral Atoms.
abstract: We propose a protocol for creating a fully entangled Greenberger-Horne-Zeilinger-type state of neutral atoms in spatially separated optical atomic clocks. In our scheme, local operations make use of the strong dipole-dipole interaction between Rydberg excitations, which give rise to fast and reliable quantum operations involving all atoms in the ensemble. The necessary entanglement between distant ensembles is mediated by single-photon quantum channels and collectively enhanced light-matter couplings. These techniques can be used to create the recently proposed quantum clock network based on neutral atom optical clocks. We specifically analyze a possible realization of this scheme using neutral Yb ensembles.
authors.affiliation: Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: P
authors.initials: P
authors.lastname: Kómár
authors.affiliation: Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.|Department of Physics, University of Nevada, Reno, Nevada 89557, USA.|ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: T
authors.initials: T
authors.lastname: Topcu
authors.affiliation: Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.|ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: E M
authors.initials: EM
authors.lastname: Kessler
authors.affiliation: Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.|Department of Physics, University of Nevada, Reno, Nevada 89557, USA.|ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: A
authors.initials: A
authors.lastname: Derevianko
authors.affiliation: Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: V
authors.initials: V
authors.lastname: Vuletić
authors.affiliation: JILA, NIST, Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: J
authors.initials: J
authors.lastname: Ye
authors.affiliation: Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: M D
authors.initials: MD
authors.lastname: Lukin