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Ballistic 3-port interferometric logic gates in the quantum Hall regime
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In this paper, a 3-port interferometer, defined by quantum point contacts in a two-dimensional electron gas, and working in the quantum Hall regime, can implement different logic gates at each port depending on the energy of charge carriers and the operating conditions.Abstract:
We show that a 3-port interferometer, defined by quantum point contacts in a two-dimensional electron gas, and working in the quantum Hall regime, can implement different logic gates at each port depending on the energy of charge carriers and the operating conditions In all cases the input logic states are encoded in the potentials applied on the quantum point contacts, while the output logic states are encoded in the values of the overall transmission coefficients at each port In addition, the output of such compact configurations can be reprogrammed by combining two 3-port interferometersread more
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Coulomb and exchange interaction effects on the exact two-electron dynamics in the Hong-Ou-Mandel interferometer based on Hall edge states
TL;DR: In this paper, the Coulomb repulsion dominates over the exchange energy, this effect being strongly dependent on the energy broadening of the particles, and analytically the spatial entanglement between the two regions of the quantum point contact is defined.
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Quantum computing with quantum-Hall edge state interferometry
TL;DR: In this article, a generic one-qubit rotation can be realized by a proper design of the 2DEG potential landscape, which can be implemented by exploiting Coulomb interaction, thus realizing a universal set of quantum gates.
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Reconfigurable logic gates in nanowires with Rashba spin-orbit interaction
TL;DR: In this paper, two configurations are proposed for the implementation of several logic gates in ballistic nanowires with Rashba spin-orbit interaction, and the logic states are encoded in Rashba coefficients/applied gate voltages on up to three regions surrounded by areas with no spinorbit coupling.
References
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An electronic Mach–Zehnder interferometer
TL;DR: This device is the first electronic analogue of the optical Mach–Zehnder interferometer, and opens the way to measuring interference of quasiparticles with fractional charges, and is highly sensitive and exhibits very high visibility.