Coupled Landau-Zener-Stuckelberg Quantum Dot Interferometers

Abstract

We investigate the interplay between long-range and direct photon-assisted transport in a triple quantum dot chain where local ac voltages are applied to the outer dots. We propose the phase difference between the two ac voltages as an external parameter, which can be easily tuned to manipulate the current characteristics. For gate voltages in phase opposition we find quantum destructive interferences analogous to the interferences in closed-loop undriven triple dots. As the voltages oscillate in phase, interferences between multiple paths give rise to dark states. Those totally cancel the current, and could be experimentally resolved.

6 pages, 4 figures

References in corpus (10)

• All-electronic coherent population trapping in quantum dots
• Dark states in the magnetotransport through triple quantum dots
• The 3D transport diagram of a triple quantum dot
• Long-range spin transfer in triple quantum dots
• Extreme Harmonic Generation in Electrically Driven Spin Resonance
• Superexchange blockade in triple quantum dots
• Multi-level interference resonances in strongly-driven three-level systems
• Photon assisted long-range tunneling
• Dark Bell states in tunnel-coupled spin qubits
• Fast Long-Distance Control of Spin Qubits by Photon Assisted Cotunneling

Cited by in corpus (12)

• Nonadiabatic Landau-Zener-Stückelberg-Majorana transitions, dynamics, and interference
• Electron pumping in the strong coupling and non-Markovian regime: A reaction coordinate mapping approach
• Spin entangled state transfer in quantum dot arrays: Coherent adiabatic and speed-up protocols
• Fast long-range state transfer in quantum dot arrays via shortcuts to adiabaticity
• Periodically Driven Three-Level Systems
• Coherent long-range transfer of two-electron states in ac-driven triple quantum dots
• Entangling power of symmetric two-qubit quantum gates
• Coherent Long-Range Thermoelectrics in Nonadiabatic Driven Quantum Systems
• Flying Spin Qubits in Quantum Dot Arrays Driven by Spin-Orbit Interaction
• SU(3) Landau-Zener interferometry with a transverse periodic drive
• Distinguishing coherent from incoherent charge transport in linear triple quantum dots
• Landau-Zener transition between two quantum dots coupled by resonant tunneling