1212.2528 (P. Szankowski et al.)

Memory in an $N$--qubit System as a Resource of the Decoherence
Slow-Down with Application to Quantum Interferometry    [PDF]

P. Szankowski, J. Chwedenczuk, M. Trippenbach

We demonstrate that memory in an $N$-qubit system subjected to decoherence, is a potential resource for the slow-down of the entanglement decay. As a possible application, we show that this effect can be used to retain the sub shot-noise sensitivity of the parameter estimation in quantum interferometry.

View original: http://arxiv.org/abs/1212.2528