منابع مشابه
Numerical analysis of quasiholes of the moore-read wave function.
We demonstrate numerically that non-Abelian quasihole (qh) excitations of the nu=5/2 fractional quantum Hall state have some of the key properties necessary to support quantum computation. We find that as the qh spacing is increased, the unitary transformation which describes winding two qh's around each other converges exponentially to its asymptotic limit and that the two orthogonal wave func...
متن کاملCharged spin textures over the Moore–Read quantum Hall state
We study charged spin textures (CSTs) over the Moore–Read quantum Hall state at filling factor 5/2. We develop an algebraic framework and show that the pairing condition that is inherent in the Moore–Read state naturally leads to a class of CST, labeled by winding numbers [wI, wII]. The fundamental CSTs, with labels [1, 0] and electric charge e/4, is identified with the polar core vortex known ...
متن کاملSynthesis of maximally entangled mixed states and disentanglement in coupled Josephson charge qubits
We analyze a controllable generation of maximally entangled mixed states of a circuit containing two-coupled superconducting charge qubits. Each qubit is based on a Cooper pair box connected to a reservoir electrode through a Josephson junction. Illustrative variational calculations were performed to demonstrate the effect on the two-qubits entanglement. At sufficiently deviation between the Jo...
متن کاملEntangled States in a Josephson Charge Qubit Coupled to a Superconducting Resonator
We study the dynamics of a quantum superconducting circuit which is the analogue of an atom in a high-Q cavity. The circuit consists of a Josephson charge qubit coupled to a superconducting resonator. The charge qubit can be treated as a two level quantum system whose energy separation is split by the Josephson energy E j. The superconducting resonator in our proposal is the analogue of a photo...
متن کاملProbing Spin States of Coupled Quantum dots by dc Josephson Current
We propose an idea for probing spin states of two coupled quantum dots (CQD), by the dc Josephson current flowing through them. This theory requires weak coupling between CQD and electrodes, but allows arbitrary inter-dot tunnel coupling, intraand interdot Coulomb interactions. We find that the Coulomb blockade peaks exhibit a non-monotonous dependence on the Zeeman splitting of CQD, which can ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2014
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.90.235101