Parity detection and entanglement with a Mach-Zehnder interferometer

@article{Haack2010ParityDA,
  title={Parity detection and entanglement with a Mach-Zehnder interferometer},
  author={G{\'e}raldine Haack and Heidi Forster and Markus Buttiker},
  journal={Physical Review B},
  year={2010},
  volume={82},
  pages={155303}
}
United Nations University, Hermann-Ehlers-Str. 10, 53113 Bonn, Germany(Dated: November 12, 2010)A parity meter projects the state of two qubits onto two subspaces with different parities, thestates in each parity class being indistinguishable. It has application in quantum information forits entanglement properties. In our work we consider the electronic Mach-Zehnder interferometer(MZI) coupled capacitively to two double quantum dots (DQDs), one on each arm of the MZI.These charge qubits couple… 

Figures from this paper

Deterministic entanglement of superconducting qubits by parity measurement and feedback

TLDR
Here, a time-resolved, continuous parity measurement of two superconducting qubits is performed using the cavity in a three-dimensional circuit quantum electrodynamics architecture and phase-sensitive parametric amplification to produce entanglement by parity measurement reaching 88 per cent fidelity to the closest Bell state.

Measurement-induced entanglement of two transmon qubits by a single photon

On-demand creation of entanglement between distant qubits is a necessary ingredient for distributed quantum computation. We propose an entanglement scheme that allows for single-shot deterministic

Feedback control of superconducting quantum circuits

Superconducting circuits have recently risen to the forefront of the solid-state prototypes for quantum computing. Reaching the stage of robust quantum computing requires closing the loop between

Single-shot energetic-based estimator for entanglement in a half-parity measurement setup

Producing and certifying entanglement between distant qubits is a highly desirable skill for quantum information technologies. Here we propose a new strategy to monitor and characterize entanglement

Resources Needed for Entangling Two Qubits through an Intermediate Mesoscopic System

One of the main challenges in designing large scale quantum processors is connecting separated qubits. In this thesis, we explore new opportunities that mesoscopic manybody systems provide for

Phase estimation by photon counting measurements in the output of a linear Mach–Zehnder interferometer

Photon counting measurements are analyzed for obtaining a classical phase parameter in a linear Mach–Zehnder interferometer (MZI) by the use of phase estimation theories. The detailed analysis is

Quantum-correlated photons generated by nonlocal electron transport

Since the realization of high-quality microwave cavities coupled to quantum dots, one can envisage the possibility to investigate the coherent interaction of light and matter in semiconductor quantum

Energetic witnesses of entanglement genesis in a half-parity measurement setup

Based on a quantum-trajectory approach, we analyze the statistics of heat exchanges during a half-parity measurement that is known to generate entanglement between two distant qubits initially in a

Single-shot energetic-based estimator for entanglement genesis

Producing and certifying entanglement between distant qubits is a highly desirable skill for quantum information technologies. Here we propose a new strategy to monitor and characterize entanglement

References

SHOWING 1-4 OF 4 REFERENCES

Quantum computation and quantum information

TLDR
This chapter discusses quantum information theory, public-key cryptography and the RSA cryptosystem, and the proof of Lieb's theorem.