Subspace local quantum channels

Details Subspace local quantum channels Subspace local quantum channels

2003-02-25

arxiv.org/abs/quant-ph/0302181v2

Annals of Physics Vol. 313, p. 326 (2004)

Physics

Quantum Physics

References added

Scientific paper

10.1016/j.aop.2004.04.013

A special class of quantum channels, named subspace local (SL), are defined and investigated. The proposed definition of subspace locality of quantum channels is an attempt to answer the question of what kind of restriction should be put on a channel, if it is to act `locally' with respect to two `locations', when these naturally correspond to a separation of the total Hilbert space in an orthogonal sum of subspaces, rather than a tensor product decomposition. It is shown that the set of SL channels decomposes into four disjoint families of channels. Explicit expressions to generate all channels in each family is presented. It is shown that one of these four families, the local subspace preserving (LSP) channels, is precisely the intersection between the set of subspace preserving channels and the SL channels. For a subclass of the LSP channels, a special type of unitary representation using ancilla systems is presented.

Affiliated with

Also associated with

No associations

Rating

Subspace local quantum channels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Subspace local quantum channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subspace local quantum channels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-482984