Reversible and irreversible dynamics of a qubit interacting with a small environment

Details Reversible and irreversible dynamics of a qubit interacting with a small environment Reversible and irreversible dynamics of a qubit interacting with a small environment

2006-11-27

arxiv.org/abs/quant-ph/0611262v2

Phys. Rev. A 75, 052110 (2007)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.75.052110

We analyze the dynamics of a system qubit interacting by means a sequence of pairwise collisions with an environment consisting of just two qubits. We show that the density operator of the qubits approaches a common time averaged equilibrium state, characterized by large fluctuations, only for a random sequence of collisions. For a regular sequence of collisions the qubitstates of the system and of the reservoir undergo instantaneous periodic oscillations and do not relax to a common state. Furthermore we show that pure bipartite entanglement is developed only when at least two qubits are initially in the same purestate while otherwise also genuine multipartite entanglement builds up.

Affiliated with

Also associated with

No associations

Rating

Reversible and irreversible dynamics of a qubit interacting with a small environment 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 Reversible and irreversible dynamics of a qubit interacting with a small environment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reversible and irreversible dynamics of a qubit interacting with a small environment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-23891