نتایج جستجو برای: mixed state

تعداد نتایج: 1060928  

Journal: :IOP Conference Series: Materials Science and Engineering 2016

Journal: :Physical review letters 2000
E Sjöqvist A K Pati A Ekert J S Anandan M Ericsson D K Oi V Vedral

We provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection form for obtaining the geometric phase for mixed states. The expression for the geometric phase for mixed state reduces to well known formulas...

Journal: :Physical review. B, Condensed matter 1996
Musaelian Betouras Chubukov Joynt

We consider a 2D isotropic Fermi liquid with attraction in both s and d channels and examine the possibility of a superconducting state with mixed s and d symmetry of the gap function. We show that both in the weak coupling limit and at strong coupling, a mixed s + id symmetry state is realized in a certain range of interaction. Phase transitions between the mixed and the pure symmetry states a...

2011
J. WEN

Considering two-level quantum systems, this paper proposes a control strategy that drives an arbitrary pure state to target mixed state via three-step controls. The first step is the preparation of eigenstate: the state of system controlled is driven to eigenstate from an arbitrary pure state. The second one is to drive the eigenstate prepared to the mixed state in which not all of the off-diag...

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