title: Classical and quantum communication without a shared reference frame.
abstract: We show that communication without a shared reference frame is possible using entangled states. Both classical and quantum information can be communicated with perfect fidelity without a shared reference frame at a rate that asymptotically approaches one classical bit or one encoded qubit per transmitted qubit. We present an optical scheme to communicate classical bits without a shared reference frame using entangled photon pairs and linear optical Bell state measurements.
authors.affiliation: Department of Physics, Macquarie University, Sydney, New South Wales 2109, Australia. bartlett@ics.mq.edu.au
authors.forename: Stephen D
authors.initials: SD
authors.lastname: Bartlett
authors.forename: Terry
authors.initials: T
authors.lastname: Rudolph
authors.forename: Robert W
authors.initials: RW
authors.lastname: Spekkens