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We propose a spin-independent scheme to generate and detect two-particle entanglement in a mesoscopic normal-superconductor system. A superconductor, weakly coupled to the normal conductor, generates an orbitally entangled state by…

介观与纳米尺度物理 · 物理学 2009-11-10 P. Samuelsson , E. V. Sukhorukov , M. Buttiker

Recent experiments have demonstrated sub decoherence time control of individual single-electron orbital qubits. Here we propose a quantum dot based scheme for generation and detection of pairs of orbitally entangled electrons on a timescale…

介观与纳米尺度物理 · 物理学 2015-12-08 F. Brange , O. Malkoc , P. Samuelsson

We propose a method for the optimal time-controlled generation of entangled itinerant particles, using on-demand sources in a conductor in the quantum Hall regime. This entanglement pump is realized by applying periodic, tailored voltage…

介观与纳米尺度物理 · 物理学 2012-02-28 Y. Sherkunov , N. d'Ambrumenil , P. Samuelsson , M. Buttiker

A time-dependent electromagnetic field creates electron-hole excitations in a Fermi sea at low temperature. We show that the electron-hole pairs can be generated in a controlled way using harmonic and biharmonic time-dependent voltages…

介观与纳米尺度物理 · 物理学 2013-01-01 Mihajlo Vanevic , Wolfgang Belzig

We discuss orbital entanglement in mesoscopic conductors, focusing on the effect of dephasing. The entanglement is detected via violation of a Bell Inequality formulated in terms of zero-frequency current correlations. Following closely the…

介观与纳米尺度物理 · 物理学 2007-05-23 P. Samuelsson , E. Sukhorukov , M. Buttiker

The entanglement of coherently split electron-hole pairs in an electronic conductor is typically not considered accessible due to particle number conservation and fermionic super-selection rules. We demonstrate here that current…

介观与纳米尺度物理 · 物理学 2015-11-04 David Dasenbrook , Christian Flindt

We propose a scheme to produce time bin entangled pairs of electrons and holes based on high frequency time-resolved single electron emission from a quantum dot coupled to 1D chiral channels. At first order in the tunneling rate, an…

介观与纳米尺度物理 · 物理学 2015-05-27 Luca Chirolli , Vittorio Giovannetti , Rosario Fazio , Valerio Scarani

We demonstrate that entangled electron-hole pairs can be produced and detected in a quantum spin Hall insulator with a constriction that allows for a weak inter-edge tunneling. A violation of a Bell inequality, which can be constructed in…

介观与纳米尺度物理 · 物理学 2015-06-16 Koji Sato , Mircea Trif , Yaroslav Tserkovnyak

We study the time dependent electron-electron and electron-hole correlations in a mesoscopic device which is splitting an incident current of free fermions into two spatially separated particle streams. We analyze the appearance of…

介观与纳米尺度物理 · 物理学 2009-11-10 A. V. Lebedev , G. B. Lesovik , G. Blatter

We study the many-body electronic state created by a time-dependent drive of a mesoscopic contact. The many-body state is expressed manifestly in terms of single-electron and electron-hole quasiparticle excitations with the amplitudes and…

介观与纳米尺度物理 · 物理学 2016-01-27 Mihajlo Vanevic , Julien Gabelli , Wolfgang Belzig , Bertrand Reulet

A nonperturbative theory is presented for the creation by an oscillating potential of spin-entangled electron-hole pairs in the Fermi sea. In the weak potential limit, considered earlier by Samuelsson and Buttiker, the entanglement…

介观与纳米尺度物理 · 物理学 2007-05-23 C. W. J. Beenakker , M. Titov , B. Trauzettel

We present an interferometric scheme producing orbital entanglement in a quantum Hall system upon electron-hole pair emission via tunneling. The proposed setup is an electronic version of the optical interferometer proposed by Cabello et…

介观与纳米尺度物理 · 物理学 2009-11-23 Diego Frustaglia , Adan Cabello

We propose a mesoscopic circuit in the quantum Hall effect regime comprising two uncorrelated single-particle sources and two distant Mach-Zehnder interferometers with magnetic fluxes, which allows in a controllable way to produce orbitally…

介观与纳米尺度物理 · 物理学 2015-05-13 Janine Splettstoesser , Michael Moskalets , Markus Büttiker

We demonstrate theoretically that the shot noise produced by a tunnel barrier in a two-channel conductor violates a Bell inequality. The non-locality is shown to originate from entangled electron-hole pairs created by tunneling events --…

介观与纳米尺度物理 · 物理学 2007-05-23 C. W. J. Beenakker , C. Emary , M. Kindermann , J. L. van Velsen

We present a proposal for the experimental observation of energy-time entanglement of quasi-particles in mesoscopic physics. This type of entanglement arises whenever correlated particles are produced at the same time and this time is…

介观与纳米尺度物理 · 物理学 2009-11-10 Valerio Scarani , Nicolas Gisin , Sandu Popescu

The dynamics of optically generated electron-hole pairs is investigated in a disordered semiconductor nanowire. The particle pairs are generated by short laser pulses and their dynamics is followed using the Heisenberg equation of motion.…

无序系统与神经网络 · 物理学 2007-05-23 I. Varga , C. Schlichenmaier , T. Meier , K. Maschke , P. Thomas , S. W. Koch

Electron-hole pairs produced by tunneling in a degenerate electron gas lose their spin entanglement by spin-orbit coupling, which transforms the fully entangled Bell state into a partially entangled mixed density matrix of the electron and…

介观与纳米尺度物理 · 物理学 2007-05-23 J. H. Bardarson , C. W. J. Beenakker

Using a method of characterizing entanglement in the framework of quantum field theory, we investigate the optical generation and quantitative characterizations of quantum entanglement in an electron-hole system, in presence of spin-orbit…

介观与纳米尺度物理 · 物理学 2009-11-10 Yu Shi

We propose and analyze a mesoscopic device producing on-demand entangled pairs of electrons. The system consists of two capacitively coupled Mach-Zehnder interferometers implemented in a quantum Hall structure. A pair of electron…

介观与纳米尺度物理 · 物理学 2014-03-07 A. A. Vyshnevyy , A. V. Lebedev , G. B. Lesovik , G. Blatter

We suggest an operating scheme for the deliberate generation of spin-entangled electron pairs in a normal-metal mesoscopic structure with fork geometry. Voltage pulses with associated Faraday flux equal to one flux unit $\Phi_0=hc/e$ drive…

介观与纳米尺度物理 · 物理学 2009-11-11 A. V. Lebedev , G. B. Lesovik , G. Blatter
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