Probing coherent Cooper pair splitting with cavity photons

Abstract

This work discusses theoretically the behavior of a microwave cavity and a Cooper pair beam splitter (CPS) coupled non-resonantly. The cavity frequency pull is modified when the CPS is resonant with a microwave excitation. This provides a direct way to probe the coherence of the Cooper pair splitting process. More precisely, the cavity frequency pull displays an anticrossing whose specificities can be attributed unambiguously to coherent Cooper pair injection. This work illustrates that microwave cavities represent a powerful tool to investigate current transport in complex nanocircuits.

7 pages, 4 figures

References in corpus (12)

• Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
• Circuit Quantum Electrodynamics with a Spin Qubit
• Near-unity Cooper pair splitting efficiency
• Spin dynamics in InAs-nanowire quantum-dots coupled to a transmission line
• Strong coupling of a spin qubit to a superconducting stripline cavity
• Superconducting proximity effect in interacting double-dot systems
• Nanospintronics with carbon nanotubes
• Photon mediated interaction between distant quantum dot circuits
• Lasing and transport in a quantum dot-resonator circuit
• A Radio Frequency Charge Parity Meter
• Majorana qubit rotations in microwave cavities
• Microwave spectroscopy of a Cooper pair beam splitter

Cited by in corpus (6)

• Double quantum dot Cooper-pair splitter at finite couplings
• Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation
• Towards hybrid circuit quantum electrodynamics with quantum dots
• Charge-photon transport statistics and short-time correlations in a single quantum dot-resonator system with arbitrarily large coupling parameter
• Cooper pair splitter in a photonic cavity: Detection of Andreev scatterings
• Electron-photon coupling in Mesoscopic Quantum Electrodynamics