0506172v1

related topics
{spin, pulse, spins}
{energy, state, states}
{field, particle, equation}
{wave, scattering, interference}
{level, atom, field}
{equation, function, exp}
{time, decoherence, evolution}
{temperature, thermal, energy}
{time, wave, function}
{entanglement, phys, rev}
{state, phys, rev}
{bell, inequality, local}
{force, casimir, field}
{qubit, qubits, gate}
{particle, mechanics, theory}
{alice, bob, state}

Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping

Kunal K. Das, Sungjun Kim, Ari Mizel

abstract: We propose a method to dynamically generate and control the flow of spin-entangled electrons, each belonging to a spin-singlet, by means of adiabatic quantum pumping. The pumping cycle functions by periodic time variation of localized two-body interactions. We develop a generalized approach to adiabatic quantum pumping as traditional methods based on scattering matrix in one dimension cannot be applied here. We specifically compute the flow of spin-entangled electrons within a Hubbard-like model of quantum dots, and discuss possible implementations and identify parameters that can be used to control the singlet flow.

oai_identifier:
oai:arXiv.org:quant-ph/0506172
categories:
quant-ph cond-mat.mes-hall
comments:
4 pages, 3 figures
doi:
10.1103/PhysRevLett.97.096602
arxiv_id:
quant-ph/0506172
journal_ref:
Phys. Rev. Lett. 97, 096602 (2006)
created:
2005-06-21

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