We show that a set of gates that consists of all one-bit quantum gates (U(2)) and the two-bit exclusive-or gate (that maps Boolean values (x, y) to (x, xâŠ•y)) is universal in the sense that allâ€¦ (More)

Entanglement purification protocols (EPP) and quantum errorcorrecting codes (QECC) provide two ways of protecting quantum states from interaction with the environment. In an EPP, perfectly entangledâ€¦ (More)

Charles H. Bennett(1) , Gilles Brassard(2), Sandu Popescu(3), Benjamin Schumacher(4), John A. Smolin(5), and William K. Wootters(6) (1) IBM Research Division, Yorktown Heights, NY 10598; (2) Dâ€¦ (More)

As is well known, operations on one particle of an Einstein-Podolsky-Rosen (EPR) pair cannot influence the marginal statistics of measurements on the other particle. We characterize the set of statesâ€¦ (More)

If two separated observers are supplied with entanglement, in the form of n pairs of particles in identical partly entangled pure states, one member of each pair being given to each observer, theyâ€¦ (More)

Goldfish (Family Cyprinidae, Carassius auratus) and killifish (Family Cyprinodontidae, Fundulus heteroclitus) were acclimated to 10, 20 and 35 Â°C for 4 weeks. The thermal acclimation of C-startâ€¦ (More)

The spectral sensitivity of nectar feeding by adults of the tobacco hawkmoth Manduca sexta was measured in free-choice experiments. The action spectrum displayed a narrow peak at 450 nm and a lowâ€¦ (More)