Tunable entanglement generation for mobile-electron spin qubits

Details Tunable entanglement generation for mobile-electron spin qubits Tunable entanglement generation for mobile-electron spin qubits

2005-05-02

arxiv.org/abs/cond-mat/0505049v3

Appl. Phys. Lett. 87, 102102 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3+ pages, 3 figures, RevTex4, v3: figures improved + references added, to appear in Appl. Phys. Lett

Scientific paper

10.1063/1.2041821

Recent studies have shown that linear electron optics can be used to generate entangled two-particle states from nonentangled ones if additional measurements of charge or parity are performed. We have investigated such nondeterministic entanglement production in electronic versions of the Mach-Zehnder interferometer, where spin-dependent interference occurs due to the presence of electric-field tunable Rashba spin splitting. Adjustment of the spin-precession length turns out to switch the entangler on and off, as well as control the detailed form of entangled output states.

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