We find an algebraic formula for the N -partite concurrence of N qubits in an X matrix. X matrices are density matrices whose only nonzero elements are diagonal or antidiagonal when written in anâ€¦ (More)

The rich physics exhibited by random optical wave fields permitted Hanbury Brown and Twiss to unveil fundamental aspects of light. Furthermore, it has been recognized that optical vortices areâ€¦ (More)

We present a state-transfer protocol that is mathematically equivalent to quantum teleportation but uses classical nonseparability instead of quantum entanglement. In our implementation we takeâ€¦ (More)

SEYED MOHAMMAD HASHEMI RAFSANJANI,* MOHAMMAD MIRHOSSEINI, OMAR S. MAGAÃ‘A-LOAIZA, BRYAN T. GARD, RICHARD BIRRITTELLA, B. E. KOLTENBAH, C. G. PARAZZOLI, BARBARA A. CAPRON, CHRISTOPHER C. GERRY,â€¦ (More)

Photons that are entangled or correlated in orbital angular momentum have been extensively used for remote sensing, object identification and imaging. It has recently been demonstrated that intensityâ€¦ (More)

We experimentally demonstrate simultaneous pre-and-post adaptive-optics compensation for an OAM-encoded, bi-directional quantum communication link. The atmospheric turbulence-inducedâ€¦ (More)

We examine the entanglement dynamics of two two-level systems (A & B) each interacting with separate harmonic oscillators (a & b) in a regime where rotating wave approximation is not valid.

We explore using a switchable detector array to reduce the deadtime effect in an OAM-encoded quantum system. For a 4-OAM-state system, the switchable 16-detector array could provide >15X incidentâ€¦ (More)