Proposal for production and detection of entangled electron-hole pairs in a degenerate electron gas.
@article{Beenakker2003ProposalFP, title={Proposal for production and detection of entangled electron-hole pairs in a degenerate electron gas.}, author={C. W. J. Beenakker and Clive Emary and M. Kindermann and J L van Velsen}, journal={Physical review letters}, year={2003}, volume={91 14}, pages={ 147901 } }
We demonstrate theoretically that the shot noise produced by a tunnel barrier in a two-channel conductor violates a Bell inequality. The nonlocality is shown to originate from entangled electron-hole pairs created by tunneling events-without requiring electron-electron interactions. The degree of entanglement (concurrence) equals 2(T1T2)(1/2)(T1+T2)(-1), with T1,T2<<1 the transmission eigenvalues. A pair of edge channels in the quantum Hall effect is proposed as an experimental realization.
134 Citations
Generation and Quantum Interference of Entangled Electron-Hole Pairs in a Hanbury Brown and Twiss Interferometer
- Physics
- 2010
The Hanbury–Brown–Twiss interferometer is proposed to serve as a detector of the crossed Andreev reflection and to generate entangled electron-hole pairs. It is shown that the non-local electron and…
Shot-noise spectrum of superradiant entangled excitons
- Physics
- 2004
Department of Physics, UMIST, P.O. Box 88, Manchester, M60 1QD, United Kingdom(Dated: February 2, 2008)The shot noise produced by tunneling of electrons and holes into a double dot system…
Generating spin-entangled electron pairs in normal conductors using voltage pulses
- Physics
- 2005
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…
Quantum teleportation by particle-hole annihilation in the Fermi sea.
- PhysicsPhysical review letters
- 2004
An experiment is proposed, involving low-frequency noise measurements on a two-dimensional electron gas in a high magnetic field, to detect teleportation of electrons and holes in the two lowest Landau levels.
Electronic entanglement via quantum Hall interferometry in analogy to an optical method
- Physics
- 2009
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…
Detection of nonlocal spin entanglement by light emission from a superconductingp−njunction
- Physics
- 2015
We model a superconducting p-n junction in which the n- and the p-sides are contacted through two optical quantum dots (QDs), each embedded into a photonic nanocavity. Whenever a Cooper pair is…
Creation and Detection of Mobile and Non-Local Spin-Entangled Electrons
- Physics
- 2004
We present electron spin entanglers-devices creating mobile spin-entangled electrons that are spatially separated-where the spin-entanglement in a superconductor present in form of Cooper pairs and…
Tunable entanglement generation for mobile-electron spin qubits
- Physics
- 2005
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…
46 References
Spin-entangled currents created by a triple quantum dot.
- PhysicsPhysical review letters
- 2003
A simple setup of three coupled quantum dots in the Coulomb blockade regime as a source for spatially separated currents of spin-entangled electrons to preserve the entanglement of the electron pair during its extraction to the drain leads, which prevents one-electron transport by energy mismatch.
Probing entanglement and nonlocality of electrons in a double-dot via transport and noise.
- PhysicsPhysical review letters
- 2000
It is shown that the entanglement of two electrons in the double-dot can be detected in mesoscopic transport and noise measurements and the ratio of zero-frequency noise to current is equal to the electron charge.
Electron entanglement via a quantum dot.
- PhysicsPhysical review letters
- 2002
This approach is a four-wave mixing process analogous to the photon entanglement generated by a chi((3)) parametric amplifier, and, in its absence, the singlet state vanishes.
Bell inequalities and entanglement in solid-state devices
- Physics
- 2002
Bell-inequality checks constitute a probe of entanglement-given a source of entangled particles, their violation is a signature of the nonlocal nature of quantum mechanics. Here, we study a…
Impurity scattering induced entanglement of ballistic electrons.
- PhysicsPhysical review letters
- 2001
This work shows how entanglement between two conduction electrons is generated in the presence of a localized magnetic impurity embedded in an otherwise ballistic conductor of special geometry with localized spin placed at the site of the beam splitter.
Electronic entanglement in the vicinity of a superconductor
- Physics
- 2001
Abstract:A weakly biased normal-metal-superconductor junction is considered as a potential device injecting entangled pairs of quasi-particles into a normal-metal lead. The two-particle states arise…
Andreev tunneling, Coulomb blockade, and resonant transport of nonlocal spin-entangled electrons
- Physics
- 2001
We propose and analyze a spin-entangler for electrons based on an s-wave superconductor coupled to two quantum dots, each of which is coupled to normal Fermi leads. We show that in the presence of a…
Superconductor coupled to two Luttinger liquids as an entangler for electron spins
- Physics
- 2002
We consider an s-wave superconductor (SC) which is tunnel coupled to two spatially separated Luttinger-liquid (LL) leads. We demonstrate that such a setup acts as an entangler, i.e., it creates spin…
Entanglement generation and degradation by passive optical devices
- Physics
- 2001
The influence of losses in the interferometric generation and the transmission of continuous-variable entangled light is studied, with special emphasis on Gaussian states. Based on the theory of…
Quantum entanglement in carbon nanotubes.
- PhysicsPhysical review letters
- 2002
It is shown that judiciously bringing together two systems of strongly interacting electrons with vastly differing ground states-the gapped BCS superconductor and the Luttinger liquid can result in quantum entanglement.