ua nt - p h / 02 07 00 2 v 1 2 9 Ju n 20 02 Note on Exchange Gate on the Qudit Space

ua nt - p h / 02 07 00 2 v 3 8 A ug 2 00 2 Exchange Gate on the Qudit Space and Fock Space

We construct the exchange gate with small elementary gates on the space of qudits, which consist of three controlled shift gates and three ”reverse” gates. This is a natural extension of the qubit case. We also consider a similar subject on the Fock space, but in this case we meet with some different situation. However we can construct the exchange gate by making use of generalized coherent ope...

ar X iv : q ua nt - p h / 02 06 11 6 v 1 1 8 Ju n 20 02 Five Lectures On Dissipative Master Equations

2 v 2 1 1 Ju l 2 00 2 Note on Exchange Gate on the Qudit Space

We construct the exchange gate with small elementary gates on the space of qudits, which consist of three controlled shift gates and three ”reverse” gates. This is a natural extension of the qubit case. We also consider a similar subject on the Fock space, but in this case it is not clear what elementary gates are. We present some related problems.

ua nt - p h / 02 07 06 4 v 1 1 1 Ju l 2 00 2 Digital Switching in the Quantum Domain

In this paper, we present an architecture and implementation algorithm such that digital data can be switched in the quantum domain. First we define the connection digraph which can be used to describe the behavior of a switch at a given time, then we show how a connection digraph can be implemented using elementary quantum gates. The proposed mechanism supports unicasting as well as multicasti...

ua nt - p h / 02 08 03 5 v 1 6 A ug 2 00 2 Kicked Rotor in Wigner Phase Space

We develop the Wigner phase space representation of a kicked particle for an arbitrary but periodic kicking potential. We use this formalism to illustrate quantum resonances and anti–resonances.